| ALB | Albany International Airport | Albany | large airport |
| ABQ | Albuquerque International Sunport | Albuquerque | large airport |
| AUS | Austin Bergstrom International Airport | Austin | large airport |
| BWI | Baltimore/Washington International Thurgood Marshall Airport | Baltimore | large airport |
| BHM | Birmingham-Shuttlesworth International Airport | Birmingham | large airport |
| BOI | Boise Air Terminal/Gowen Field | Boise | large airport |
| BOS | Boston Logan International Airport | Boston | large airport |
| BDL | Bradley International Airport | Hartford | large airport |
| BUF | Buffalo Niagara International Airport | Buffalo | large airport |
| CHS | Charleston International Airport | Charleston | large airport |
| CLT | Charlotte Douglas International Airport | Charlotte | large airport |
| MDW | Chicago Midway International Airport | Chicago | large airport |
| ORD | Chicago O'Hare International Airport | Chicago | large airport |
| CVG | Cincinnati Northern Kentucky International Airport | Cincinnati / Covington | large airport |
| COS | City of Colorado Springs Municipal Airport | Colorado Springs | large airport |
| CLE | Cleveland Hopkins International Airport | Cleveland | large airport |
| DFW | Dallas Fort Worth International Airport | Dallas-Fort Worth | large airport |
| DAL | Dallas Love Field | Dallas | large airport |
| HNL | Daniel K. Inouye International Airport | Honolulu, Oahu | large airport |
| DEN | Denver International Airport | Denver | large airport |
| DSM | Des Moines International Airport | Des Moines | large airport |
| DTW | Detroit Metropolitan Wayne County Airport | Detroit | large airport |
| ELP | El Paso International Airport | El Paso | large airport |
| KOA | Ellison Onizuka Kona International Airport at Keāhole | Kailua-Kona | large airport |
| OMA | Eppley Airfield | Omaha | large airport |
| FLL | Fort Lauderdale Hollywood International Airport | Fort Lauderdale | large airport |
| ROC | Frederick Douglass Greater Rochester International Airport | Rochester | large airport |
| FAT | Fresno Yosemite International Airport | Fresno | large airport |
| MKE | General Mitchell International Airport | Milwaukee | large airport |
| IAH | George Bush Intercontinental Airport | Houston | large airport |
| GRR | Gerald R. Ford International Airport | Grand Rapids | large airport |
| LAS | Harry Reid International Airport | Las Vegas | large airport |
| ATL | Hartsfield Jackson Atlanta International Airport | Atlanta | large airport |
| BUR | Hollywood Burbank/Bob Hope Airport | Burbank | large airport |
| IND | Indianapolis International Airport | Indianapolis | large airport |
| JAX | Jacksonville International Airport | Jacksonville | large airport |
| JFK | John F. Kennedy International Airport | New York | large airport |
| CMH | John Glenn Columbus International Airport | Columbus | large airport |
| SNA | John Wayne Orange County International Airport | Santa Ana | large airport |
| OGG | Kahului International Airport | Kahului | large airport |
| MCI | Kansas City International Airport | Kansas City | large airport |
| LGA | LaGuardia Airport | New York | large airport |
| LIH | Lihue Airport | Lihue, Kauai | large airport |
| LGB | Long Beach International Airport | Long Beach | large airport |
| LAX | Los Angeles International Airport | Los Angeles | large airport |
| MSY | Louis Armstrong New Orleans International Airport | New Orleans | large airport |
| SDF | Louisville Muhammad Ali International Airport | Louisville | large airport |
| TYS | McGhee Tyson Airport | Knoxville/Maryville | large airport |
| MEM | Memphis International Airport | Memphis | large airport |
| MIA | Miami International Airport | Miami | large airport |
| MSP | Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | Minneapolis | large airport |
| MYR | Myrtle Beach International Airport | Myrtle Beach | large airport |
| BNA | Nashville International Airport | Nashville | large airport |
| EWR | Newark Liberty International Airport | Newark | large airport |
| ORF | Norfolk International Airport | Norfolk | large airport |
| SJC | Norman Y. Mineta San Jose International Airport | San Jose | large airport |
| OKC | OKC Will Rogers World Airport | Oklahoma City | large airport |
| ONT | Ontario International Airport | Ontario | large airport |
| MCO | Orlando International Airport | Orlando | large airport |
| SFB | Orlando Sanford International Airport | Orlando | large airport |
| PBI | Palm Beach International Airport | West Palm Beach | large airport |
| PSP | Palm Springs International Airport | Palm Springs | large airport |
| PNS | Pensacola International Airport | Pensacola | large airport |
| PHL | Philadelphia International Airport | Philadelphia | large airport |
| PHX | Phoenix Sky Harbor International Airport | Phoenix | large airport |
| GSO | Piedmont Triad International Airport | Greensboro | large airport |
| PIT | Pittsburgh International Airport | Pittsburgh | large airport |
| PDX | Portland International Airport | Portland | large airport |
| PWM | Portland International Jetport | Portland | large airport |
| RDU | Raleigh-Durham International Airport | Raleigh/Durham | large airport |
| RNO | Reno Tahoe International Airport | Reno | large airport |
| PVD | Rhode Island T. F. Green International Airport | Providence/Warwick | large airport |
| RIC | Richmond International Airport | Richmond | large airport |
| DCA | Ronald Reagan Washington National Airport | Washington | large airport |
| SMF | Sacramento International Airport | Sacramento | large airport |
| SLC | Salt Lake City International Airport | Salt Lake City | large airport |
| SAT | San Antonio International Airport | San Antonio | large airport |
| SBD | San Bernardino International Airport | San Bernardino | large airport |
| SAN | San Diego International Airport | San Diego | large airport |
| OAK | San Francisco Bay Oakland International Airport | Oakland | large airport |
| SFO | San Francisco International Airport | San Francisco | large airport |
| SRQ | Sarasota Bradenton International Airport | Sarasota/Bradenton | large airport |
| SAV | Savannah Hilton Head International Airport | Savannah | large airport |
| SEA | Seattle–Tacoma International Airport | Seattle | large airport |
| RSW | Southwest Florida International Airport | Fort Myers | large airport |
| GEG | Spokane International Airport | Spokane | large airport |
| STL | St. Louis Lambert International Airport | St Louis | large airport |
| PIE | St. Petersburg Clearwater International Airport | Pinellas Park | large airport |
| SYR | Syracuse Hancock International Airport | Syracuse | large airport |
| TPA | Tampa International Airport | Tampa | large airport |
| ANC | Ted Stevens Anchorage International Airport | Anchorage | large airport |
| TUS | Tucson International Airport | Tucson | large airport |
| TUL | Tulsa International Airport | Tulsa | large airport |
| IAD | Washington Dulles International Airport | Dulles | large airport |
| HOU | William P. Hobby Airport | Houston | large airport |
| ABR | Aberdeen Regional Airport | Aberdeen | medium airport |
| ABI | Abilene Regional Airport | Abilene | medium airport |
| SPI | Abraham Lincoln Capital Airport | Springfield | medium airport |
| ARA | Acadiana Regional Airport | New Iberia | medium airport |
| ADT | Ada Regional Airport | Ada | medium airport |
| ADK | Adak Airport | Adak | medium airport |
| SLK | Adirondack Regional Airport | Saranac Lake | medium airport |
| CAK | Akron Canton Regional Airport | Akron | medium airport |
| AKC | Akron Fulton International Airport | Akron | medium airport |
| ALM | Alamogordo White Sands Regional Airport | Alamogordo | medium airport |
| OAJ | Albert J Ellis Airport | Richlands | medium airport |
| WKK | Aleknagik / New Airport | Aleknagik | medium airport |
| AEX | Alexandria International Airport | Alexandria | medium airport |
| ALI | Alice International Airport | Alice | medium airport |
| AGC | Allegheny County Airport | Pittsburgh | medium airport |
| BIG | Allen Army Airfield | Delta Junction Ft Greely | medium airport |
| AIA | Alliance Municipal Airport | Alliance | medium airport |
| APN | Alpena County Regional Airport | Alpena | medium airport |
| AOO | Altoona Blair County Airport | Altoona | medium airport |
| LTS | Altus Air Force Base | Altus | medium airport |
| ABL | Ambler Airport | Ambler | medium airport |
| AKP | Anaktuvuk Pass Airport | Anaktuvuk Pass | medium airport |
| AND | Anderson Regional Airport | Anderson | medium airport |
| LFK | Angelina County Airport | Lufkin | medium airport |
| ANI | Aniak Airport | Aniak | medium airport |
| ANN | Annette Island Airport | Metlakatla | medium airport |
| ANB | Anniston Regional Airport | Anniston | medium airport |
| ANV | Anvik Airport | Anvik | medium airport |
| ATW | Appleton International Airport | Appleton | medium airport |
| ARC | Arctic Village Airport | Arctic Village | medium airport |
| BYH | Arkansas International Airport | Blytheville | medium airport |
| LBE | Arnold Palmer Regional Airport | Latrobe | medium airport |
| AVL | Asheville Regional Airport | Asheville | medium airport |
| ASE | Aspen-Pitkin County Airport (Sardy Field) | Aspen | medium airport |
| AST | Astoria Regional Airport | Astoria | medium airport |
| AHN | Athens Ben Epps Airport | Athens | medium airport |
| ACY | Atlantic City International Airport | Atlantic City | medium airport |
| ATK | Atqasuk Edward Burnell Sr Memorial Airport | Atqasuk | medium airport |
| AGS | Augusta Regional At Bush Field | Augusta | medium airport |
| AUG | Augusta State Airport | Augusta | medium airport |
| GRB | Austin Straubel International Airport | Green Bay | medium airport |
| BKE | Baker City Municipal Airport | Baker City | medium airport |
| BGR | Bangor International Airport | Bangor | medium airport |
| BKH | Barking Sands Airport | Kekaha | medium airport |
| PAH | Barkley Regional Airport | Paducah | medium airport |
| BAD | Barksdale Air Force Base | Bossier City | medium airport |
| DAG | Barstow Daggett Airport | Daggett | medium airport |
| BTI | Barter Island Long Range Radar Station Airport | Barter Island | medium airport |
| BTR | Baton Rouge Metropolitan Airport | Baton Rouge | medium airport |
| BTL | Battle Creek Executive Airport at Kellogg Field | Battle Creek | medium airport |
| BDE | Baudette International Airport | Baudette | medium airport |
| BAB | Beale Air Force Base | Beale Air Force Base | medium airport |
| DRI | Beauregard Regional Airport | DeRidder | medium airport |
| BFP | Beaver County Airport | Beaver Falls | medium airport |
| BLI | Bellingham International Airport | Bellingham | medium airport |
| BJI | Bemidji Regional Airport | Bemidji | medium airport |
| BTM | Bert Mooney Airport | Butte | medium airport |
| BET | Bethel Airport | Bethel | medium airport |
| BVY | Beverly Regional Airport | Beverly / Danvers | medium airport |
| BYS | Bicycle Lake Army Air Field | Fort Irwin/Barstow | medium airport |
| BIF | Biggs Army Air Field (Fort Bliss) | Fort Bliss/El Paso | medium airport |
| LIT | Bill & Hillary Clinton National Airport/Adams Field | Little Rock | medium airport |
| BIL | Billings Logan International Airport | Billings | medium airport |
| DUG | Bisbee Douglas International Airport | Douglas Bisbee | medium airport |
| FNT | Bishop International Airport | Flint | medium airport |
| BIS | Bismarck Municipal Airport | Bismarck | medium airport |
| LEX | Blue Grass Airport | Lexington | medium airport |
| BLH | Blythe Airport | Blythe | medium airport |
| IAN | Bob Baker Memorial Airport | Kiana | medium airport |
| CEW | Bob Sikes Airport | Crestview | medium airport |
| BCT | Boca Raton Airport | Boca Raton | medium airport |
| HRO | Boone County Airport | Harrison | medium airport |
| BLD | Boulder City Municipal Airport | Boulder City | medium airport |
| HQM | Bowerman Airport | Hoquiam | medium airport |
| BWG | Bowling Green Warren County Regional Airport | Bowling Green | medium airport |
| LOU | Bowman Field | Louisville | medium airport |
| BZN | Bozeman Yellowstone International Airport | Bozeman | medium airport |
| BFD | Bradford Regional Airport | Bradford | medium airport |
| BRD | Brainerd Lakes Regional Airport | Brainerd | medium airport |
| BKG | Branson Airport | Branson | medium airport |
| PWT | Bremerton National Airport | Bremerton | medium airport |
| SDM | Brown Field Municipal Airport | San Diego | medium airport |
| BRO | Brownsville South Padre Island International Airport | Brownsville | medium airport |
| NHZ | Brunswick Executive Airport | Brunswick | medium airport |
| BQK | Brunswick Golden Isles Airport | Brunswick | medium airport |
| BCE | Bryce Canyon Airport | Bryce Canyon | medium airport |
| CCR | Buchanan Field | Concord | medium airport |
| BFK | Buckley Space Force Base | Aurora | medium airport |
| BKL | Burke Lakefront Airport | Cleveland | medium airport |
| BYI | Burley Municipal Airport | Burley | medium airport |
| BNO | Burns Municipal Airport | Burns | medium airport |
| FCS | Butts AAF (Fort Carson) Air Field | Fort Carson | medium airport |
| OZR | Cairns AAF (Fort Rucker) Air Field | Fort Rucker/Ozark | medium airport |
| ACV | California Redwood Coast-Humboldt County Airport | Arcata/Eureka | medium airport |
| HOP | Campbell Army Airfield (Fort Campbell) | Fort Campbell | medium airport |
| CVS | Cannon Air Force Base | Clovis | medium airport |
| CNY | Canyonlands Regional Airport | Moab | medium airport |
| HYA | Cape Cod Gateway Airport | Hyannis | medium airport |
| CGI | Cape Girardeau Regional Airport | Cape Girardeau | medium airport |
| LUR | Cape Lisburne LRRS Airport | Cape Lisburne | medium airport |
| WWD | Cape May County Airport | Wildwood | medium airport |
| EHM | Cape Newenham LRRS Airport | Cape Newenham | medium airport |
| CZF | Cape Romanzof LRRS Airport | Cape Romanzof | medium airport |
| LAN | Capital Region International Airport | Lansing | medium airport |
| CAR | Caribou Municipal Airport | Caribou | medium airport |
| CSN | Carson Airport | Carson City | medium airport |
| CPR | Casper-Natrona County International Airport | Casper | medium airport |
| MER | Castle Airport | Merced | medium airport |
| CNM | Cavern City Air Terminal | Carlsbad | medium airport |
| VQQ | Cecil Airport | Jacksonville | medium airport |
| CDC | Cedar City Regional Airport | Cedar City | medium airport |
| APA | Centennial Airport | Denver | medium airport |
| BMI | Central Illinois Regional Airport at Bloomington-Normal | Bloomington/Normal | medium airport |
| GRI | Central Nebraska Regional Airport | Grand Island | medium airport |
| CWA | Central Wisconsin Airport | Mosinee | medium airport |
| RIW | Central Wyoming Regional Airport | Riverton | medium airport |
| CDR | Chadron Municipal Airport | Chadron | medium airport |
| YKN | Chan Gurney Municipal Airport | Yankton | medium airport |
| AXN | Chandler Field | Alexandria | medium airport |
| CNU | Chanute Martin Johnson Airport | Chanute | medium airport |
| MKC | Charles B. Wheeler Downtown Airport | Kansas City | medium airport |
| STS | Charles M. Schulz Sonoma County Airport | Santa Rosa | medium airport |
| CHO | Charlottesville Albemarle Airport | Charlottesville | medium airport |
| CHA | Chattanooga Metropolitan Airport (Lovell Field) | Chattanooga | medium airport |
| JHW | Chautauqua County-Jamestown Airport | Jamestown | medium airport |
| TVC | Cherry Capital Airport | Traverse City | medium airport |
| CYS | Cheyenne Regional Jerry Olson Field | Cheyenne | medium airport |
| PWK | Chicago Executive Airport | Chicago/Prospect Heights/Wheeling | medium airport |
| RFD | Chicago Rockford International Airport | Chicago/Rockford | medium airport |
| CDS | Childress Municipal Airport | Childress | medium airport |
| CIU | Chippewa County International Airport | Kincheloe | medium airport |
| EAU | Chippewa Valley Regional Airport | Eau Claire | medium airport |
| LUK | Cincinnati Municipal Airport Lunken Field | Cincinnati | medium airport |
| CVN | Clovis Municipal Airport | Clovis | medium airport |
| EWN | Coastal Carolina Regional Airport | New Bern | medium airport |
| COE | Coeur D'Alene Airport - Pappy Boyington Field | Coeur d'Alene | medium airport |
| CDB | Cold Bay Airport | Cold Bay | medium airport |
| DET | Coleman A. Young Municipal Airport | Detroit | medium airport |
| DLS | Columbia Gorge Regional Airport | Dallesport / The Dalles | medium airport |
| CAE | Columbia Metropolitan Airport | Columbia | medium airport |
| COU | Columbia Regional Airport | Columbia | medium airport |
| CBM | Columbus Air Force Base | Columbus | medium airport |
| CSG | Columbus Airport | Columbus | medium airport |
| CLU | Columbus Municipal Airport | Columbus | medium airport |
| OLU | Columbus Municipal Airport | Columbus | medium airport |
| CON | Concord Municipal Airport | Concord | medium airport |
| USA | Concord-Padgett Regional Airport | Concord | medium airport |
| CXO | Conroe-North Houston Regional Airport | Houston | medium airport |
| CRP | Corpus Christi International Airport | Corpus Christi | medium airport |
| CEZ | Cortez Municipal Airport | Cortez | medium airport |
| CVO | Corvallis Municipal Airport | Corvallis | medium airport |
| PRX | Cox Field | Paris | medium airport |
| LMT | Crater Lake-Klamath Regional Airport | Klamath Falls | medium airport |
| CSV | Crossville Memorial Airport Whitson Field | Crossville | medium airport |
| BBD | Curtis Field | Brady | medium airport |
| CTB | Cut Bank International Airport | Cut Bank | medium airport |
| CGF | Cuyahoga County Airport | Cleveland | medium airport |
| DHT | Dalhart Municipal Airport | Dalhart | medium airport |
| DXR | Danbury Municipal Airport | Danbury | medium airport |
| MSN | Dane County Regional Truax Field | Madison | medium airport |
| DNL | Daniel Field | Augusta | medium airport |
| DAN | Danville Regional Airport | Danville | medium airport |
| DMA | Davis Monthan Air Force Base | Tucson | medium airport |
| DAA | Davison Army Air Field | Fort Belvoir | medium airport |
| GDV | Dawson Community Airport | Glendive | medium airport |
| DAB | Daytona Beach International Airport | Daytona Beach | medium airport |
| SCC | Deadhorse Airport | Deadhorse | medium airport |
| DEC | Decatur Airport | Decatur | medium airport |
| DRG | Deering Airport | Deering | medium airport |
| PDK | DeKalb Peachtree Airport | Atlanta | medium airport |
| DRT | Del Rio International Airport | Del Rio | medium airport |
| MIE | Delaware County Johnson Field | Muncie | medium airport |
| ESC | Delta County Airport | Escanaba | medium airport |
| DMN | Deming Municipal Airport | Deming | medium airport |
| LOL | Derby Field | Lovelock | medium airport |
| DRA | Desert Rock Airport | Mercury | medium airport |
| DSI | Destin Executive Airport | Destin | medium airport |
| VPS | Destin-Fort Walton Beach Airport | Valparaiso | medium airport |
| DVL | Devils Lake Regional Airport | Devils Lake | medium airport |
| DIK | Dickinson Theodore Roosevelt Regional Airport | Dickinson | medium airport |
| EEN | Dillant Hopkins Airport | Keene | medium airport |
| DLG | Dillingham Airport | Dillingham | medium airport |
| MGE | Dobbins Air Reserve Base | Marietta | medium airport |
| DDC | Dodge City Regional Airport | Dodge City | medium airport |
| DHN | Dothan Regional Airport | Dothan | medium airport |
| DOV | Dover Civil Air Terminal/Dover Air Force Base | Dover | medium airport |
| FYV | Drake Field | Fayetteville | medium airport |
| TPL | Draughon Miller Central Texas Regional Airport | Temple | medium airport |
| DUJ | DuBois Regional Airport | Dubois | medium airport |
| DBQ | Dubuque Regional Airport | Dubuque | medium airport |
| EGI | Duke Field | Crestview | medium airport |
| DLH | Duluth International Airport | Duluth | medium airport |
| DPA | Dupage Airport | Chicago/West Chicago | medium airport |
| DRO | Durango La Plata County Airport | Durango | medium airport |
| DUA | Durant Regional Airport - Eaker Field | Durant | medium airport |
| POU | Dutchess County Airport | Poughkeepsie | medium airport |
| DYS | Dyess Air Force Base | Abilene | medium airport |
| EGE | Eagle County Regional Airport | Eagle | medium airport |
| SYA | Eareckson Air Station | Shemya | medium airport |
| GGG | East Texas Regional Airport | Longview | medium airport |
| PDT | Eastern Oregon Regional Airport at Pendleton | Pendleton | medium airport |
| BIH | Eastern Sierra Regional Airport | Bishop | medium airport |
| MRB | Eastern WV Regional Airport/Shepherd Field | Martinsburg | medium airport |
| CLL | Easterwood Field | College Station | medium airport |
| MPV | Edward F Knapp State Airport | Barre/Montpelier | medium airport |
| GAL | Edward G. Pitka Sr Airport | Galena | medium airport |
| EDW | Edwards Air Force Base | Edwards | medium airport |
| EGX | Egegik Airport | Egegik | medium airport |
| EIL | Eielson Air Force Base | Fairbanks | medium airport |
| NJK | El Centro NAF Airport (Vraciu Field) | El Centro | medium airport |
| ECG | Elizabeth City Regional Airport & Coast Guard Air Station | Elizabeth City | medium airport |
| EKN | Elkins-Randolph County Regional Airport | Elkins | medium airport |
| EKO | Elko Regional Airport | Elko | medium airport |
| EFD | Ellington Airport | Houston | medium airport |
| RCA | Ellsworth Air Force Base | Rapid City | medium airport |
| EDF | Elmendorf Air Force Base | Anchorage | medium airport |
| ELM | Elmira Corning Regional Airport | Elmira/Corning | medium airport |
| ELY | Ely Airport Yelland Field | Ely | medium airport |
| LYU | Ely Municipal Airport | Ely | medium airport |
| EMK | Emmonak Airport | Emmonak | medium airport |
| ERI | Erie International Tom Ridge Field | Erie | medium airport |
| ESF | Esler Army Airfield / Esler Regional Airport | Alexandria | medium airport |
| EUG | Eugene Airport | Eugene | medium airport |
| TOL | Eugene F. Kranz Toledo Express Airport | Toledo | medium airport |
| EVW | Evanston-Uinta County Airport-Burns Field | Evanston | medium airport |
| EVV | Evansville Regional Airport | Evansville | medium airport |
| FAI | Fairbanks International Airport | Fairbanks | medium airport |
| SKA | Fairchild Air Force Base | Spokane | medium airport |
| NFL | Fallon Naval Air Station | Fallon | medium airport |
| INL | Falls International Airport | International Falls | medium airport |
| FAY | Fayetteville Regional Airport - Grannis Field | Fayetteville | medium airport |
| FAF | Felker Army Air Field | Newport News (Fort Eustis) | medium airport |
| SFF | Felts Field | Spokane | medium airport |
| FDY | Findlay Airport | Findlay | medium airport |
| FLG | Flagstaff Pulliam Airport | Flagstaff | medium airport |
| FLO | Florence Regional Airport | Florence | medium airport |
| MTH | Florida Keys Marathon International Airport | Marathon | medium airport |
| GFL | Floyd Bennett Memorial Airport | Glens Falls | medium airport |
| IMT | Ford Airport | Kingsford | medium airport |
| FOD | Fort Dodge Regional Airport | Fort Dodge | medium airport |
| FXE | Fort Lauderdale Executive Airport | Fort Lauderdale | medium airport |
| FME | Fort Meade Executive Airport | Fort Meade(Odenton) | medium airport |
| FSM | Fort Smith Regional Airport | Fort Smith | medium airport |
| FST | Fort Stockton Pecos County Airport | Fort Stockton | medium airport |
| FWA | Fort Wayne International Airport | Fort Wayne | medium airport |
| FTW | Fort Worth Meacham International Airport | Fort Worth | medium airport |
| FYU | Fort Yukon Airport | Fort Yukon | medium airport |
| FMN | Four Corners Regional Airport | Farmington | medium airport |
| FRD | Friday Harbor Airport | Friday Harbor | medium airport |
| SUN | Friedman Memorial Airport | Hailey | medium airport |
| FTY | Fulton County Airport Brown Field | Atlanta | medium airport |
| GNV | Gainesville Regional Airport | Gainesville | medium airport |
| GUP | Gallup Municipal Airport | Gallup | medium airport |
| GAM | Gambell Airport | Gambell | medium airport |
| GCK | Garden City Regional Airport | Garden City | medium airport |
| RIL | Garfield County Regional Airport | Rifle | medium airport |
| GYY | Gary/Chicago International Airport | Gary | medium airport |
| PIA | General Wayne A. Downing Peoria International Airport | Peoria | medium airport |
| WJF | General William J Fox Airfield | Lancaster | medium airport |
| FCA | Glacier Park International Airport | Kalispell | medium airport |
| GGW | Glasgow Valley County Airport Wokal Field | Glasgow | medium airport |
| FTK | Godman Army Air Field | Fort Knox | medium airport |
| GTR | Golden Triangle Regional Airport | Columbus/W Point/Starkville | medium airport |
| GLD | Goodland Municipal Airport | Goodland | medium airport |
| GCN | Grand Canyon National Park Airport | Grand Canyon - Tusayan | medium airport |
| RDR | Grand Forks Air Force Base | Grand Forks | medium airport |
| GFK | Grand Forks International Airport | Grand Forks | medium airport |
| GJT | Grand Junction Regional Airport | Grand Junction | medium airport |
| CRE | Grand Strand Airport | North Myrtle Beach | medium airport |
| SVC | Grant County Airport | Silver City | medium airport |
| MWH | Grant County International Airport | Moses Lake | medium airport |
| GRF | Gray Army Air Field | Fort Lewis/Tacoma | medium airport |
| GTF | Great Falls International Airport | Great Falls | medium airport |
| BGM | Greater Binghamton/Edwin A Link field | Binghamton | medium airport |
| IKK | Greater Kankakee Airport | Kankakee | medium airport |
| LWB | Greenbrier Valley Airport | Lewisburg | medium airport |
| GMU | Greenville Downtown Airport | Greenville | medium airport |
| GSP | Greenville-Spartanburg International Airport | Greenville/Greer/Spartanburg | medium airport |
| GWO | Greenwood–Leflore Airport | Greenwood | medium airport |
| RME | Griffiss International Airport | Rome | medium airport |
| GUS | Grissom Air Reserve Base | Peru | medium airport |
| GON | Groton New London Airport | Groton | medium airport |
| GPT | Gulfport Biloxi International Airport | Gulfport | medium airport |
| GKN | Gulkana Airport | Gulkana | medium airport |
| GUC | Gunnison Crested Butte Regional Airport | Gunnison | medium airport |
| GST | Gustavus Airport | Gustavus | medium airport |
| GUY | Guymon Municipal Airport | Guymon | medium airport |
| HGR | Hagerstown Regional Richard A Henson Field | Hagerstown | medium airport |
| HNS | Haines Airport | Haines | medium airport |
| HNM | Hana Airport | Hana | medium airport |
| BHB | Hancock County-Bar Harbor Airport | Bar Harbor | medium airport |
| MDT | Harrisburg International Airport | Harrisburg | medium airport |
| HFD | Hartford Brainard Airport | Hartford | medium airport |
| HBG | Hattiesburg Bobby L Chain Municipal Airport | Hattiesburg | medium airport |
| PIB | Hattiesburg Laurel Regional Airport | Moselle | medium airport |
| HVR | Havre City County Airport | Havre | medium airport |
| HYS | Hays Regional Airport | Hays | medium airport |
| FAR | Hector International Airport | Fargo | medium airport |
| HLN | Helena Regional Airport | Helena | medium airport |
| FSI | Henry Post Army Air Field | Fort Sill | medium airport |
| HKY | Hickory Regional Airport | Hickory | medium airport |
| HIF | Hill Air Force Base | Ogden | medium airport |
| ITO | Hilo International Airport | Hilo | medium airport |
| HHH | Hilton Head Airport | Hilton Head Island | medium airport |
| HBR | Hobart Regional Airport | Hobart | medium airport |
| HMN | Holloman Air Force Base | Alamogordo | medium airport |
| HCR | Holy Cross Airport | Holy Cross | medium airport |
| HOM | Homer Airport | Homer | medium airport |
| HST | Homestead Air Reserve Base | Homestead | medium airport |
| CMX | Houghton County Memorial Airport | Hancock | medium airport |
| HUL | Houlton International Airport | Houlton | medium airport |
| LND | Hunt Field | Lander | medium airport |
| SVN | Hunter Army Air Field | Savannah | medium airport |
| HSV | Huntsville International Airport | Huntsville | medium airport |
| HTV | Huntsville Regional Airport | Huntsville | medium airport |
| HON | Huron Regional Airport | Huron | medium airport |
| HSL | Huslia Airport | Huslia | medium airport |
| HUT | Hutchinson Municipal Airport | Hutchinson | medium airport |
| IDA | Idaho Falls Regional Airport | Idaho Falls | medium airport |
| BDR | Igor I Sikorsky Memorial Airport | Bridgeport | medium airport |
| ILI | Iliamna Airport | Iliamna | medium airport |
| IPL | Imperial County Airport | Imperial | medium airport |
| UTO | Indian Mountain LRRS Airport | Utopia Creek | medium airport |
| ITH | Ithaca Tompkins Regional Airport | Ithaca | medium airport |
| BPT | Jack Brooks Regional Airport | Beaumont/Port Arthur | medium airport |
| CEC | Jack Mc Namara Field Airport | Crescent City | medium airport |
| HHR | Jack Northrop Field Hawthorne Municipal Airport | Hawthorne | medium airport |
| JXN | Jackson County Airport/Reynolds Field | Jackson | medium airport |
| JAC | Jackson Hole Airport | Jackson | medium airport |
| JAN | Jackson-Medgar Wiley Evers International Airport | Jackson | medium airport |
| CRG | Jacksonville Executive at Craig Airport | Jacksonville | medium airport |
| NIP | Jacksonville Naval Air Station (Towers Field) | Jacksonville | medium airport |
| TRM | Jacqueline Cochran Regional Airport | Palm Springs | medium airport |
| DAY | James M. Cox Dayton International Airport | Dayton | medium airport |
| JMS | Jamestown Regional Airport | Jamestown | medium airport |
| CUB | Jim Hamilton L.B. Owens Airport | Columbia | medium airport |
| JST | John Murtha Johnstown Cambria County Airport | Johnstown | medium airport |
| ADW | Joint Base Andrews | Camp Springs | medium airport |
| JBR | Jonesboro Municipal Airport | Jonesboro | medium airport |
| JLN | Joplin Regional Airport | Joplin | medium airport |
| TWF | Joslin Field Magic Valley Regional Airport | Twin Falls | medium airport |
| JNU | Juneau International Airport | Juneau | medium airport |
| JRF | Kalaeloa Airport | Kapolei | medium airport |
| AZO | Kalamazoo/Battle Creek International Airport | Kalamazoo | medium airport |
| NGF | Kaneohe Bay MCAS (Marion E. Carl Field) Airport | Kaneohe | medium airport |
| JHM | Kapalua Airport | Lahaina | medium airport |
| OFK | Karl Stefan Memorial Airport | Norfolk | medium airport |
| EAR | Kearney Regional Airport | Kearney | medium airport |
| BIX | Keesler Air Force Base | Biloxi | medium airport |
| ENA | Kenai Municipal Airport | Kenai | medium airport |
| ENW | Kenosha Regional Airport | Kenosha | medium airport |
| KTN | Ketchikan International Airport | Ketchikan | medium airport |
| MEI | Key Field / Meridian Regional Airport | Meridian | medium airport |
| EYW | Key West International Airport | Key West | medium airport |
| GRK | Killeen Regional Airport / Robert Gray Army Airfield | Fort Cavazos | medium airport |
| JCT | Kimble County Airport | Junction | medium airport |
| BFI | King County International Airport - Boeing Field | Seattle | medium airport |
| AKN | King Salmon Airport | King Salmon | medium airport |
| IGM | Kingman Airport | Kingman | medium airport |
| NQI | Kingsville Naval Air Station | Kingsville | medium airport |
| ISO | Kinston Regional Jetport At Stallings Field | Kinston | medium airport |
| IRK | Kirksville Regional Airport | Kirksville | medium airport |
| ISM | Kissimmee Gateway Airport | Orlando | medium airport |
| KLW | Klawock Airport | Klawock | medium airport |
| RKD | Knox County Regional Airport | Rockland | medium airport |
| ADQ | Kodiak Airport | Kodiak | medium airport |
| OLF | L M Clayton Airport | Wolf Point | medium airport |
| LSE | La Crosse Regional Airport | La Crosse | medium airport |
| SKF | Lackland Air Force Base | San Antonio | medium airport |
| FBK | Ladd Army Airfield | Fairbanks | medium airport |
| LFT | Lafayette Regional Airport | Lafayette | medium airport |
| LCH | Lake Charles Regional Airport | Lake Charles | medium airport |
| SME | Lake Cumberland Regional Airport | Somerset | medium airport |
| HII | Lake Havasu City Airport | Lake Havasu City | medium airport |
| TVL | Lake Tahoe Airport | South Lake Tahoe | medium airport |
| NEW | Lakefront Airport | New Orleans | medium airport |
| NEL | Lakehurst Maxfield Field Airport | Lakehurst | medium airport |
| LAL | Lakeland Linder International Airport | Lakeland | medium airport |
| LNY | Lanai Airport | Lanai City | medium airport |
| LNS | Lancaster Airport | Lancaster | medium airport |
| LFI | Langley Air Force Base | Hampton | medium airport |
| LAR | Laramie Regional Airport | Laramie | medium airport |
| LRD | Laredo International Airport | Laredo | medium airport |
| LRU | Las Cruces International Airport | Las Cruces | medium airport |
| LVS | Las Vegas Municipal Airport | Las Vegas | medium airport |
| DLF | Laughlin Air Force Base | Del Rio | medium airport |
| IFP | Laughlin Bullhead International Airport | Bullhead City | medium airport |
| BED | Laurence G Hanscom Field | Bedford | medium airport |
| LWM | Lawrence Municipal Airport | Lawrence | medium airport |
| LSF | Lawson Army Air Field | Fort Benning | medium airport |
| LAW | Lawton Fort Sill Regional Airport | Lawton | medium airport |
| HOB | Lea County Regional Airport | Hobbs | medium airport |
| LEB | Lebanon Municipal Airport | Lebanon | medium airport |
| LEE | Leesburg International Airport | Leesburg | medium airport |
| ABE | Lehigh Valley International Airport | Allentown/Bethlehem | medium airport |
| SMN | Lemhi County Airport | Salmon | medium airport |
| NLC | Lemoore Naval Air Station (Reeves Field) Airport | Lemoore | medium airport |
| LWS | Lewiston Nez Perce County Airport | Lewiston | medium airport |
| LWT | Lewistown Municipal Airport | Lewistown | medium airport |
| LBL | Liberal Mid-America Regional Airport | Liberal | medium airport |
| LNK | Lincoln Airport | Lincoln | medium airport |
| LRF | Little Rock Air Force Base | Jacksonville | medium airport |
| LGU | Logan-Cache Airport | Logan | medium airport |
| LOZ | London-Corbin Airport/Magee Field | London | medium airport |
| ISP | Long Island MacArthur Airport | Islip | medium airport |
| LBB | Lubbock Preston Smith International Airport | Lubbock | medium airport |
| LUF | Luke Air Force Base | Glendale | medium airport |
| LBT | Lumberton Regional Airport | Lumberton | medium airport |
| LYH | Lynchburg Regional Airport - Preston Glenn Field | Lynchburg | medium airport |
| MCF | MacDill Air Force Base | Tampa | medium airport |
| MNZ | Manassas Regional Airport/Harry P. Davis Field | Manassas | medium airport |
| MHT | Manchester-Boston Regional Airport | Manchester | medium airport |
| MHK | Manhattan Regional Airport | Manhattan | medium airport |
| MFD | Mansfield Lahm Regional Airport | Mansfield | medium airport |
| RIV | March Air Reserve Base | Riverside | medium airport |
| MQT | Marquette/Sawyer International Airport | Gwinn | medium airport |
| FRI | Marshall Army Air Field | Fort Riley (Junction City) | medium airport |
| MTN | Martin State Airport | Baltimore | medium airport |
| MCW | Mason City Municipal Airport | Mason City | medium airport |
| MSS | Massena International Airport Richards Field | Massena | medium airport |
| MXF | Maxwell Air Force Base | Montgomery | medium airport |
| MBS | MBS International Airport | Freeland | medium airport |
| MLC | Mc Alester Regional Airport | Mc Alester | medium airport |
| MMT | Mc Entire Joint National Guard Base | Eastover | medium airport |
| WRI | Mc Guire Air Force Base | Wrightstown | medium airport |
| MFE | McAllen Miller International Airport | McAllen | medium airport |
| MYL | McCall Municipal Airport | McCall | medium airport |
| TCM | McChord Air Force Base | Tacoma | medium airport |
| MCC | McClellan Airfield | Sacramento | medium airport |
| CLD | McClellan-Palomar Airport | Carlsbad | medium airport |
| MCB | McComb-Pike County Airport / John E Lewis Field | McComb | medium airport |
| IAB | McConnell Air Force Base | Wichita | medium airport |
| MCK | McCook Ben Nelson Regional Airport | McCook | medium airport |
| MCG | McGrath Airport | McGrath | medium airport |
| MKL | McKellar-Sipes Regional Airport | Jackson | medium airport |
| BFL | Meadows Field | Bakersfield | medium airport |
| MYU | Mekoryuk Airport | Mekoryuk | medium airport |
| MLB | Melbourne Orlando International Airport | Melbourne | medium airport |
| HOT | Memorial Field Airport | Hot Springs | medium airport |
| MCE | Merced Regional Macready Field | Merced | medium airport |
| BLF | Mercer County Airport | Bluefield | medium airport |
| CDV | Merle K (Mudhole) Smith Airport | Cordova | medium airport |
| MRI | Merrill Field | Anchorage | medium airport |
| AZA | Mesa Gateway Airport | Mesa | medium airport |
| MFH | Mesquite Airport | Mesquite | medium airport |
| TMB | Miami Executive Airport | Miami | medium airport |
| OPF | Miami-Opa Locka Executive Airport | Miami | medium airport |
| MGC | Michigan City Municipal Airport | Michigan City | medium airport |
| GLH | Mid Delta Regional Airport | Greenville | medium airport |
| PKB | Mid Ohio Valley Regional Airport | Parkersburg (Williamstown) | medium airport |
| MCN | Middle Georgia Regional Airport | Macon | medium airport |
| MAF | Midland International Air and Space Port | Midland | medium airport |
| MLS | Miles City Airport - Frank Wiley Field | Miles City | medium airport |
| BPI | Miley Memorial Field | Big Piney | medium airport |
| VTN | Miller Field | Valentine | medium airport |
| NQA | Millington-Memphis Airport | Millington | medium airport |
| MIV | Millville Municipal Airport | Millville | medium airport |
| MWL | Mineral Wells Regional Airport | Mineral Wells | medium airport |
| MIB | Minot Air Force Base | Minot | medium airport |
| MOT | Minot International Airport | Minot | medium airport |
| NKX | Miramar Marine Corps Air Station - Mitscher Field | San Diego | medium airport |
| LVM | Mission Field | Livingston | medium airport |
| MSO | Missoula Montana Airport | Missoula | medium airport |
| BFM | Mobile Downtown Airport | Mobile | medium airport |
| MOB | Mobile Regional Airport | Mobile | medium airport |
| MBG | Mobridge Municipal Airport | Mobridge | medium airport |
| MOD | Modesto City Co-Harry Sham Field | Modesto | medium airport |
| NUQ | Moffett Federal Airfield | Mountain View | medium airport |
| MHV | Mojave Air & Space Port | Mojave | medium airport |
| MKK | Molokai Airport | Kaunakakai | medium airport |
| BMG | Monroe County Airport | Bloomington | medium airport |
| MLU | Monroe Regional Airport | Monroe | medium airport |
| MRY | Monterey Regional Airport | Monterey | medium airport |
| MGM | Montgomery Regional (Dannelly Field) Airport | Montgomery | medium airport |
| MTJ | Montrose Regional Airport | Montrose | medium airport |
| VAD | Moody Air Force Base | Valdosta | medium airport |
| MGW | Morgantown Municipal Airport Walter L. (Bill) Hart Field | Morgantown | medium airport |
| MMU | Morristown Municipal Airport | Morristown | medium airport |
| MUO | Mountain Home Air Force Base | Mountain Home | medium airport |
| MUI | Muir Army Air Field (Fort Indiantown Gap) Airport | Fort Indiantown Gap(Annville) | medium airport |
| EKA | Murray Field | Eureka | medium airport |
| MKG | Muskegon County Airport | Muskegon | medium airport |
| ACK | Nantucket Memorial Airport | Nantucket | medium airport |
| APF | Naples Municipal Airport | Naples | medium airport |
| FWH | NAS Fort Worth JRB / Carswell Field | Fort Worth | medium airport |
| NGP | Naval Air Station Corpus Christi Truax Field | Corpus Christi | medium airport |
| NQX | Naval Air Station Key West/Boca Chica Field | Key West | medium airport |
| NPA | Naval Air Station Pensacola Forrest Sherman Field | Pensacola | medium airport |
| NRB | Naval Station Mayport / Admiral David L McDonald Field | Jacksonville | medium airport |
| EED | Needles Airport | Needles | medium airport |
| LSV | Nellis Air Force Base | Las Vegas | medium airport |
| ENN | Nenana Municipal Airport | Nenana | medium airport |
| EWB | New Bedford Regional Airport | New Bedford | medium airport |
| NBG | New Orleans NAS JRB/Alvin Callender Field | New Orleans | medium airport |
| RNH | New Richmond Regional Airport | New Richmond | medium airport |
| SWF | New York Stewart International Airport | Newburgh | medium airport |
| ONP | Newport Municipal Airport | Newport | medium airport |
| PHF | Newport News Williamsburg International Airport | Newport News | medium airport |
| NPT | Newport State Airport | Newport | medium airport |
| IAG | Niagara Falls International Airport | Niagara Falls | medium airport |
| OLS | Nogales International Airport | Nogales | medium airport |
| OME | Nome Airport | Nome | medium airport |
| NGU | Norfolk Naval Station (Chambers Field) | Norfolk | medium airport |
| CKB | North Central West Virginia Airport | Bridgeport | medium airport |
| NZY | North Island Naval Air Station-Halsey Field | San Diego | medium airport |
| VGT | North Las Vegas Airport | Las Vegas | medium airport |
| HWO | North Perry Airport | Hollywood | medium airport |
| LBF | North Platte Regional Airport Lee Bird Field | North Platte | medium airport |
| PNX | North Texas Regional Airport Perrin Field | Denison | medium airport |
| UST | Northeast Florida Regional Airport | St Augustine | medium airport |
| CCY | Northeast Iowa Regional Airport | Charles City | medium airport |
| JFN | Northeast Ohio Regional Airport | Ashtabula | medium airport |
| PNE | Northeast Philadelphia Airport | Philadelphia | medium airport |
| GCC | Northeast Wyoming Regional Airport | Gillette | medium airport |
| FNL | Northern Colorado Regional Airport | Loveland | medium airport |
| ORT | Northway Airport | Northway | medium airport |
| MSL | Northwest Alabama Regional Airport | Muscle Shoals | medium airport |
| XNA | Northwest Arkansas National Airport | Fayetteville/Springdale/Rogers | medium airport |
| ECP | Northwest Florida Beaches International Airport | Panama City Beach | medium airport |
| OWD | Norwood Memorial Airport | Norwood | medium airport |
| NUI | Nuiqsut Airport | Nuiqsut | medium airport |
| PTK | Oakland County International Airport | Pontiac | medium airport |
| OCE | Ocean City Municipal Airport | Ocean City | medium airport |
| OCA | Ocean Reef Club Airport | Key Largo | medium airport |
| NTU | Oceana Naval Air Station | Virginia Beach | medium airport |
| OCN | Oceanside Municipal Airport | Oceanside | medium airport |
| OFF | Offutt Air Force Base | Omaha | medium airport |
| OGD | Ogden Hinckley Airport | Ogden | medium airport |
| OGS | Ogdensburg International Airport | Ogdensburg | medium airport |
| OLM | Olympia Regional Airport | Olympia | medium airport |
| ONO | Ontario Municipal Airport | Oregon | medium airport |
| OGB | Orangeburg Municipal Airport | Orangeburg | medium airport |
| ESD | Orcas Island Airport | Eastsound | medium airport |
| ORL | Orlando Executive Airport | Orlando | medium airport |
| OTM | Ottumwa Regional Airport | Ottumwa | medium airport |
| OWB | Owensboro Daviess County Airport | Owensboro | medium airport |
| OXR | Oxnard Airport | Oxnard | medium airport |
| WMH | Ozark Regional Airport | Mountain Home | medium airport |
| FMY | Page Field | Fort Myers | medium airport |
| PGA | Page Municipal Airport | Page | medium airport |
| PMD | Palmdale Regional Airport / USAF Plant 42 Airport | Palmdale | medium airport |
| PAO | Palo Alto Airport | Palo Alto | medium airport |
| EAT | Pangborn Memorial Airport | Wenatchee | medium airport |
| PRB | Paso Robles Municipal Airport | Paso Robles | medium airport |
| BTV | Patrick Leahy Burlington International Airport | Burlington | medium airport |
| COF | Patrick Space Force Base | Cocoa Beach | medium airport |
| NHK | Patuxent River Naval Air Station (Trapnell Field) | Patuxent River | medium airport |
| PLN | Pellston Regional Airport of Emmet County Airport | Pellston | medium airport |
| AFW | Perot Field/Fort Worth Alliance Airport | Fort Worth | medium airport |
| PSG | Petersburg James A Johnson Airport | Petersburg | medium airport |
| TOP | Philip Billard Municipal Airport | Topeka | medium airport |
| APG | Phillips Army Air Field | Aberdeen | medium airport |
| PIR | Pierre Regional Airport | Pierre | medium airport |
| PBF | Pine Bluff Regional Airport, Grider Field | Pine Bluff | medium airport |
| PGV | Pitt-Greenville Airport | Greenville | medium airport |
| PTU | Platinum Airport | Platinum | medium airport |
| PBG | Plattsburgh International Airport | Plattsburgh | medium airport |
| PIH | Pocatello Regional Airport | Pocatello | medium airport |
| PIZ | Point Lay LRRS Airport | Point Lay | medium airport |
| NTD | Point Mugu Naval Air Station (Naval Base Ventura Co) | Point Mugu | medium airport |
| POE | Polk Army Air Field | Fort Polk | medium airport |
| PNC | Ponca City Regional Airport | Ponca City | medium airport |
| POB | Pope Field | Fort Bragg | medium airport |
| KPC | Port Clarence Coast Guard Station | Port Clarence | medium airport |
| PTH | Port Heiden Airport | Port Heiden | medium airport |
| VPZ | Porter County Municipal Airport | Valparaiso | medium airport |
| HIO | Portland Hillsboro Airport | Portland | medium airport |
| TTD | Portland Troutdale Airport | Portland | medium airport |
| PSM | Portsmouth International Airport at Pease | Portsmouth | medium airport |
| PRC | Prescott Regional Airport - Ernest A. Love Field | Prescott | medium airport |
| PQI | Presque Isle International Airport | Presque Isle | medium airport |
| PVU | Provo Municipal Airport | Provo | medium airport |
| PUB | Pueblo Memorial Airport | Pueblo | medium airport |
| PUW | Pullman-Moscow Regional Airport | Pullman | medium airport |
| PGD | Punta Gorda Airport | Punta Gorda | medium airport |
| LAF | Purdue University Airport | West Lafayette | medium airport |
| MLI | Quad City International Airport | Moline | medium airport |
| NYG | Quantico Marine Corps Airfield / Turner Field | Quantico | medium airport |
| UIN | Quincy Regional Airport Baldwin Field | Quincy | medium airport |
| NCO | Quonset State Airport | North Kingstown | medium airport |
| BKW | Raleigh County Memorial Airport | Beaver | medium airport |
| PWY | Ralph Wenz Field | Pinedale | medium airport |
| OTZ | Ralph Wien Memorial Airport | Kotzebue | medium airport |
| RND | Randolph Air Force Base | Universal City | medium airport |
| HIB | Range Regional Airport | Hibbing | medium airport |
| RAP | Rapid City Regional Airport | Rapid City | medium airport |
| RWL | Rawlins Municipal Airport/Harvey Field | Rawlins | medium airport |
| RDG | Reading Regional Airport (Carl A Spaatz Field) | Reading | medium airport |
| RBL | Red Bluff Municipal Airport | Red Bluff | medium airport |
| RDD | Redding Municipal Airport | Redding | medium airport |
| HUA | Redstone Army Air Field | Redstone Arsnl Huntsville | medium airport |
| RWF | Redwood Falls Municipal Airport | Redwood Falls | medium airport |
| FRG | Republic Airport | East Farmingdale | medium airport |
| RHI | Rhinelander Oneida County Airport | Rhinelander | medium airport |
| RMG | Richard B Russell Airport | Rome | medium airport |
| AMA | Rick Husband Amarillo International Airport | Amarillo | medium airport |
| LCK | Rickenbacker International Airport | Columbus | medium airport |
| RAL | Riverside Municipal Airport | Riverside | medium airport |
| ROA | Roanoke–Blacksburg Regional Airport | Roanoke | medium airport |
| RDM | Roberts Field | Redmond | medium airport |
| WRB | Robins Air Force Base | Warner Robins | medium airport |
| RST | Rochester International Airport | Rochester | medium airport |
| RWI | Rocky Mount Wilson Regional Airport | Rocky Mount | medium airport |
| BJC | Rocky Mountain Metropolitan Airport | Denver | medium airport |
| MFR | Rogue Valley International-Medford Airport | Medford | medium airport |
| STJ | Rosecrans Memorial Airport | St Joseph | medium airport |
| ROW | Roswell Air Center Airport | Roswell | medium airport |
| RBY | Ruby Airport | Ruby | medium airport |
| RSL | Russell Municipal Airport | Russell | medium airport |
| RUT | Rutland - Southern Vermont Regional Airport | Rutland | medium airport |
| SAC | Sacramento Executive Airport | Sacramento | medium airport |
| MHR | Sacramento Mather Airport | Sacramento | medium airport |
| STC | Saint Cloud Regional Airport | Saint Cloud | medium airport |
| STP | Saint Paul Downtown Holman Field | Saint Paul | medium airport |
| SLE | Salem-Willamette Valley Airport/McNary Field | Salem | medium airport |
| SLN | Salina Municipal Airport | Salina | medium airport |
| SNS | Salinas Municipal Airport | Salinas | medium airport |
| SBY | Salisbury Ocean City Wicomico Regional Airport | Salisbury | medium airport |
| SJT | San Angelo Regional Mathis Field | San Angelo | medium airport |
| SQL | San Carlos Airport | San Carlos | medium airport |
| SBP | San Luis County Regional Airport | San Luis Obispo | medium airport |
| ALS | San Luis Valley Regional Airport/Bergman Field | Alamosa | medium airport |
| SDP | Sand Point Airport | Sand Point | medium airport |
| SBA | Santa Barbara Municipal Airport | Santa Barbara | medium airport |
| SAF | Santa Fe Municipal Airport | Santa Fe | medium airport |
| SMX | Santa Maria Public Airport Captain G Allan Hancock Field | Santa Maria | medium airport |
| SMO | Santa Monica Municipal Airport | Santa Monica | medium airport |
| SVA | Savoonga Airport | Savoonga | medium airport |
| HYR | Sawyer County Airport | Hayward | medium airport |
| SCH | Schenectady County Airport | Schenectady | medium airport |
| GLS | Scholes International At Galveston Airport | Galveston | medium airport |
| BLV | Scott AFB/Midamerica Airport | Belleville | medium airport |
| PAE | Seattle Paine Field International Airport | Everett | medium airport |
| MTC | Selfridge Air National Guard Base Airport | Mount Clemens | medium airport |
| SWD | Seward Airport | Seward | medium airport |
| GSB | Seymour Johnson Air Force Base | Goldsboro | medium airport |
| SSC | Shaw Air Force Base | Sumter | medium airport |
| SHD | Shenandoah Valley Regional Airport | Weyers Cave | medium airport |
| SHR | Sheridan County Airport | Sheridan | medium airport |
| SOW | Show Low Regional Airport | Show Low | medium airport |
| SHV | Shreveport Regional Airport | Shreveport | medium airport |
| SDY | Sidney - Richland Regional Airport | Sidney | medium airport |
| SNY | Sidney Municipal Airport Lloyd W Carr Field | Sidney | medium airport |
| RUI | Sierra Blanca Regional Airport | Alto | medium airport |
| FHU | Sierra Vista Municipal Airport / Libby Army Air Field | Fort Huachuca / Sierra Vista | medium airport |
| FBG | Simmons Army Air Field | Fort Bragg | medium airport |
| FSD | Sioux Falls Regional Airport | Sioux Falls | medium airport |
| SUX | Sioux Gateway Airport / Brigadier General Bud Day Field | Sioux City | medium airport |
| SIT | Sitka Rocky Gutierrez Airport | Sitka | medium airport |
| INT | Smith Reynolds Airport | Winston Salem | medium airport |
| MQY | Smyrna Airport | Smyrna | medium airport |
| SXQ | Soldotna Airport | Soldotna | medium airport |
| ELD | South Arkansas Regional Airport at Goodwin Field | El Dorado | medium airport |
| SBN | South Bend International Airport | South Bend | medium airport |
| LAA | Southeast Colorado Regional Airport | Lamar | medium airport |
| BRL | Southeast Iowa Regional Airport | Burlington | medium airport |
| MDH | Southern Illinois Airport | Murphysboro | medium airport |
| ABY | Southwest Georgia Regional Airport | Albany | medium airport |
| OTH | Southwest Oregon Regional Airport | North Bend | medium airport |
| KLS | Southwest Washington Regional Airport | Kelso | medium airport |
| RKS | Southwest Wyoming Regional Airport | Rock Springs | medium airport |
| TIX | Space Coast Regional Airport | Titusville | medium airport |
| SVW | Sparrevohn LRRS Airport | Sparrevohn | medium airport |
| SUS | Spirit of St Louis Airport | St Louis | medium airport |
| SGF | Springfield Branson National Airport | Springfield | medium airport |
| SGH | Springfield-Beckley Municipal Airport | Springfield | medium airport |
| STG | St George Airport | St George | medium airport |
| SGU | St George Regional Airport | St George | medium airport |
| ALN | St Louis Regional Airport | Alton/St Louis | medium airport |
| SNP | St Paul Island Airport | St Paul Island | medium airport |
| SSI | St Simons Island Airport | St Simons Island | medium airport |
| SCE | State College Regional Airport | State College | medium airport |
| SWO | Stillwater Regional Airport | Stillwater | medium airport |
| SSF | Stinson Municipal Airport | San Antonio | medium airport |
| SCK | Stockton Metropolitan Airport | Stockton | medium airport |
| SGR | Sugar Land Regional Airport | Houston | medium airport |
| TIW | Tacoma Narrows Airport | Tacoma | medium airport |
| TKA | Talkeetna Airport | Talkeetna | medium airport |
| TLH | Tallahassee International Airport | Tallahassee | medium airport |
| TSM | Taos Regional Airport | Taos | medium airport |
| TLJ | Tatalina LRRS Airport | Takotna | medium airport |
| TEX | Telluride Regional Airport | Telluride | medium airport |
| HUF | Terre Haute Regional Airport, Hulman Field | Terre Haute | medium airport |
| TEB | Teterboro Airport | Teterboro | medium airport |
| TXK | Texarkana Regional Airport (Webb Field) | Texarkana | medium airport |
| LJN | Texas Gulf Coast Regional Airport | Angleton | medium airport |
| CID | The Eastern Iowa Airport | Cedar Rapids | medium airport |
| OSU | The Ohio State University Airport - Don Scott Field | Columbus | medium airport |
| TVF | Thief River Falls Regional Airport | Thief River Falls | medium airport |
| TIK | Tinker Air Force Base | Oklahoma City | medium airport |
| DUT | Tom Madsen (Dutch Harbor) Airport | Unalaska | medium airport |
| TPH | Tonopah Airport | Tonopah | medium airport |
| FOE | Topeka Regional Airport | Topeka | medium airport |
| SUU | Travis Air Force Base | Fairfield | medium airport |
| FPR | Treasure Coast International Airport | Fort Pierce | medium airport |
| TTN | Trenton Mercer Airport | Ewing Township | medium airport |
| PSC | Tri Cities Airport | Pasco | medium airport |
| TRI | Tri-Cities Regional TN/VA Airport | Blountville | medium airport |
| HTS | Tri-State Airport / Milton J. Ferguson Field | Huntington | medium airport |
| TOI | Troy Municipal Airport at N Kenneth Campbell Field | Troy | medium airport |
| TKF | Truckee Tahoe Airport | Truckee | medium airport |
| TCS | Truth or Consequences Municipal Airport | Truth or Consequences | medium airport |
| TCC | Tucumcari Municipal Airport | Tucumcari | medium airport |
| RVS | Tulsa Riverside Airport | Tulsa | medium airport |
| TUP | Tupelo Regional Airport | Tupelo | medium airport |
| TCL | Tuscaloosa National Airport | Tuscaloosa | medium airport |
| HVN | Tweed New Haven Airport | New Haven | medium airport |
| TYR | Tyler Pounds Regional Airport | Tyler | medium airport |
| PAM | Tyndall Air Force Base | Panama City | medium airport |
| UKI | Ukiah Municipal Airport | Ukiah | medium airport |
| UNK | Unalakleet Airport | Unalakleet | medium airport |
| CMI | University of Illinois Willard Airport | Savoy | medium airport |
| UOX | University Oxford Airport | Oxford | medium airport |
| VDZ | Valdez Pioneer Field | Valdez | medium airport |
| VLD | Valdosta Regional Airport | Valdosta | medium airport |
| HRL | Valley International Airport | Harlingen | medium airport |
| VNY | Van Nuys Airport | Van Nuys | medium airport |
| END | Vance Air Force Base | Enid | medium airport |
| VBG | Vandenberg Space Force Base | Lompoc | medium airport |
| FKL | Venango Regional Airport | Franklin | medium airport |
| VEL | Vernal Regional Airport | Vernal | medium airport |
| VRB | Vero Beach Regional Airport | Vero Beach | medium airport |
| MWA | Veterans Airport of Southern Illinois | Marion | medium airport |
| VCT | Victoria Regional Airport | Victoria | medium airport |
| VIS | Visalia Municipal Airport | Visalia | medium airport |
| VOK | Volk Field | Camp Douglas | medium airport |
| ACT | Waco Regional Airport | Waco | medium airport |
| MUE | Waimea Kohala Airport | Waimea (Kamuela) | medium airport |
| AIN | Wainwright Airport | Wainwright | medium airport |
| ALW | Walla Walla Regional Airport | Walla Walla | medium airport |
| PAQ | Warren "Bud" Woods Palmer Municipal Airport | Palmer | medium airport |
| WWA | Wasilla Airport | Wasilla | medium airport |
| ALO | Waterloo Regional Airport | Waterloo | medium airport |
| ART | Watertown International Airport | Watertown | medium airport |
| ATY | Watertown Regional Airport | Watertown | medium airport |
| AUW | Wausau Downtown Airport | Wausau | medium airport |
| TBN | Waynesville-St. Robert Regional Airport-Forney Field | Fort Leonard Wood | medium airport |
| ENV | Wendover Airport | Wendover | medium airport |
| WWR | West Woodward Airport | Woodward | medium airport |
| HPN | Westchester County Airport | White Plains | medium airport |
| WST | Westerly State Airport | Westerly | medium airport |
| BFF | Western Neb. Rgnl/William B. Heilig Airport | Scottsbluff | medium airport |
| BAF | Westfield-Barnes Regional Airport | Westfield | medium airport |
| CEF | Westover Metropolitan Airport / Westover Air Reserve Base | Chicopee | medium airport |
| HLG | Wheeling Ohio County Airport | Wheeling | medium airport |
| NUW | Whidbey Island Naval Air Station (Ault Field) | Oak Harbor | medium airport |
| SZL | Whiteman Air Force Base | Knob Noster | medium airport |
| NSE | Whiting Field Naval Air Station - North | Milton | medium airport |
| ICT | Wichita Dwight D. Eisenhower National Airport | Wichita | medium airport |
| SPS | Wichita Falls Municipal Airport / Sheppard Air Force Base | Wichita Falls | medium airport |
| BRW | Wiley Post Will Rogers Memorial Airport | Utqiaġvik | medium airport |
| AVP | Wilkes-Barre/Scranton International Airport | Wilkes-Barre/Scranton | medium airport |
| CLM | William R Fairchild International Airport | Port Angeles | medium airport |
| IPT | Williamsport Regional Airport | Williamsport | medium airport |
| XWA | Williston Basin International Airport | Williston | medium airport |
| YIP | Willow Run Airport | Detroit | medium airport |
| ILN | Wilmington Airpark | Wilmington | medium airport |
| ILG | Wilmington Airport | Wilmington | medium airport |
| ILM | Wilmington International Airport | Wilmington | medium airport |
| INK | Winkler County Airport | Wink | medium airport |
| WMC | Winnemucca Municipal Airport | Winnemucca | medium airport |
| INW | Winslow Lindbergh Regional Airport | Winslow | medium airport |
| OSH | Wittman Regional Airport | Oshkosh | medium airport |
| ORH | Worcester Regional Airport | Worcester | medium airport |
| WRL | Worland Municipal Airport | Worland | medium airport |
| WRG | Wrangell Airport | Wrangell | medium airport |
| FFO | Wright-Patterson Air Force Base | Dayton | medium airport |
| YKM | Yakima Air Terminal McAllister Field | Yakima | medium airport |
| YAK | Yakutat Airport | Yakutat | medium airport |
| HDN | Yampa Valley Airport | Hayden | medium airport |
| CRW | Yeager Airport | Charleston | medium airport |
| WYS | Yellowstone Airport | West Yellowstone | medium airport |
| COD | Yellowstone Regional Airport | Cody | medium airport |
| YNG | Youngstown Warren Regional Airport | Youngstown/Warren | medium airport |
| MYV | Yuba County Airport | Marysville | medium airport |
| YUM | Yuma International Airport / Marine Corps Air Station Yuma | Yuma | medium airport |
| ZZV | Zanesville Municipal Airport | Zanesville | medium airport |