IAD · Dulles, United States
Washington Dulles International Airport.
--:--:-- · EDT (UTC-04:00) · 38.9445° N, 77.4558° W
Dulles International Airport
Airport in Dulles, Virginia, United States
Verification trail
Source-backed facts for IAD
This section separates stable airport identifiers from live operating data. Codes, coordinates, timezone, elevation, source identifiers, and accepted reference links are retained here; live arrivals, departures, gates, delays, NOTAMs, and airline schedule changes must still be checked with the airport or carrier.
Airport catalog
OurAirports ID 3602; ident KIAD; scheduled service listed.
Cached airports.csv snapshot: 2026-04-25; runways.csv snapshot: 2026-05-21.
Official airport source
mwaa.com
Used as the preferred live-reference handoff for terminals, gates, alerts, and airport notices.
Open sourceReference summary
Dulles International Airport
Airport-shaped reference summary from en.wikipedia.org; summary snapshot 2026-05-20.
Open sourceManual / derived signals
22 source-backed signals
Merged from OurAirports cached airports.csv, OurAirports cached runways.csv, Wikidata airport entity snapshot, airport-shaped Wikipedia summary snapshot; facts generated 2026-05-21.
IATA / ICAO
IAD / KIAD
OurAirports ident
KIAD
GPS / local code
KIAD / IAD
ISO region
US-VA
Scheduled service
Listed in source snapshot
Role
international scheduled-service gateway
Official host
mwaa.com
Reference host
en.wikipedia.org
Wikidata entity
Q466835
Snapshot generated
2026-05-21
Airport lookup keys
Stable codes
Regional keys
Alternate names
Nearby airport codes
Route reference codes
Accepted citation URLs
Last updated May 21, 2026. Stable airport identifiers and timezone facts are content-reviewed; clocks render live in the browser, while weather and time-difference notes are page-snapshot aids rather than permanent airport records.
Live values rendered at Nov 5, 9:24 PM UTC.
What you need to know now
Local airport time
--:--:--EDT · UTC-04:00
Time zone
EDT
America/New_York · UTC-04:00
Airfield conditions
Live airport weather is temporarily unavailable.
Surface access
37 km
Approximate distance to central Dulles.
Airport Snapshot
Country capital
Washington, D.C.
Languages
English
Currency
USD ($)
Country area
9,525,067 km²
Passenger volume
Source note unavailable
Terminals
Not clearly stated
Runways
4 runways
Longest runway
11,500 ft / 3,505 m
Runway surface
concrete (3), conc-g
Opened / operator
1962 · Metropolitan Washington Airports Authority
Owner / entity
Metropolitan Washington Airports Authority
Hub airlines
Mixed or not clearly stated
Airport role
international scheduled-service gateway
Scheduled service
Listed
Fact coverage
22 source-backed signals
Washington Dulles International Airport is a international scheduled-service gateway for Dulles, United States. Dulles's built-up core sits roughly 37 km from the terminal area. Operations run on America/New_York (UTC-04:00, EDT). Live weather is temporarily unavailable. With 5 other indexable airports in its surrounding network, it works well as a reference point for regional flight planning and timezone checks.
Washington Dulles International Airport (IAD / KIAD) is at 38.9445° N, 77.4558° W, elevation 312 ft (95 m), serving Dulles, United States.
The accepted reference summary is used as supporting context for the airport identity and operating notes; the timed facts here still come from the airport catalog, timezone database, country snapshot, and linked source trail.
Dulles is in United States (capital Washington, D.C.); regulated by Federal Aviation Administration (FAA); on America/New_York (EDT, UTC-04:00); working languages: English; currency: USD ($).
Distance from central Dulles: 37 km.
Airport context brief
A compact traveler-facing brief from the airport catalog, country snapshot, route geometry, city anchors, peer airports, and source trail for IAD.
Name and identity cues
Primary airport name
Washington Dulles International Airport (IAD / KIAD)
Dulles International Airport · Airport in Dulles, Virginia, United States
Known label 1
WAS
Alternate airport-name cue retained for IAD, not a separate indexable duplicate page.
Source identifiers
KIAD · KIAD · IAD · US-VA
mwaa.com · en.wikipedia.org · scheduled service yes
Source-specific airport notes
Regional role cue
Washington Dulles International Airport is the main international airport serving Washington, D.C., the capital of the United States.
Accepted from the airport reference trail as a role-specific cue for IAD; not treated as a live service guarantee.
Location cue
It is located 26 miles (42 km) west of downtown Washington, D.C., in Loudoun and Fairfax counties in Northern Virginia.
Used to make the airport page location-specific beyond the code, coordinate, and timezone record.
Closest mapped city anchors
1. South Riding
south-riding · 4.9 km from IAD
United States · America/New_York · +0h · population 24,256 · city coordinates 38.9209, -77.5039
2. Oak Hill
oak-hill · 5.1 km from IAD
United States · America/New_York · +0h · population 33,811 · city coordinates 38.9258, -77.4016
3. Chantilly
chantilly · 6.0 km from IAD
United States · America/New_York · +0h · population 23,039 · city coordinates 38.8943, -77.4311
4. Herndon
herndon · 6.6 km from IAD
United States · America/New_York · +0h · population 24,568 · city coordinates 38.9695, -77.3861
5. Sterling
sterling · 7.3 km from IAD
United States · America/New_York · +0h · population 27,822 · city coordinates 39.0062, -77.4286
6. Reston
reston · 10 km from IAD
United States · America/New_York · +0h · population 58,404 · city coordinates 38.9687, -77.3411
Airport alternatives in the retained graph
1. DCA KDCA
Ronald Reagan Washington National Airport · Washington
38 km from IAD · America/New_York · +0h · elevation 15 ft (5 m) · airport coordinates 38.8521, -77.0377
2. BWI KBWI
Baltimore/Washington International Thurgood Marshall Airport · Baltimore
73 km from IAD · America/New_York · +0h · elevation 146 ft (45 m) · airport coordinates 39.1754, -76.6683
3. RIC KRIC
Richmond International Airport · Richmond
160 km from IAD · America/New_York · +0h · elevation 167 ft (51 m) · airport coordinates 37.5052, -77.3197
4. PHL KPHL
Philadelphia International Airport · Philadelphia
216 km from IAD · America/New_York · +0h · elevation 36 ft (11 m) · airport coordinates 39.8719, -75.2411
5. ORF KORF
Norfolk International Airport · Norfolk
253 km from IAD · America/New_York · +0h · elevation 26 ft (8 m) · airport coordinates 36.8953, -76.2010
Route-time reference set
1. IAD-BWI
Baltimore · 73 km · 56m
America/New_York · +0h from IAD; reference route only, not a live schedule.
2. IAD-RIC
Richmond · 160 km · 1h 2m
America/New_York · +0h from IAD; reference route only, not a live schedule.
3. IAD-PHL
Philadelphia · 216 km · 1h 6m
America/New_York · +0h from IAD; reference route only, not a live schedule.
4. IAD-ORF
Norfolk · 253 km · 1h 9m
America/New_York · +0h from IAD; reference route only, not a live schedule.
Runway source evidence
Published runway count
4 runways
Longest runway 11,500 ft / 3,505 m. 4 lighted runways in the runway snapshot.
Runway surface mix
concrete (3), conc-g
Surface labels are normalized from the OurAirports runway rows for IAD.
Runway identifiers
01C/19C · 01L/19R · 01R/19L · 12/30
Identifier pairs are retained as airport-specific runway cues, not live operational availability claims.
Same-country airport context
1. DCA KDCA
Ronald Reagan Washington National Airport · Washington · 38 km from IAD
large airport · America/New_York · united-states · 15 ft (5 m) · 38.8521, -77.0377
2. BWI KBWI
Baltimore/Washington International Thurgood Marshall Airport · Baltimore · 73 km from IAD
large airport · America/New_York · united-states · 146 ft (45 m) · 39.1754, -76.6683
3. RIC KRIC
Richmond International Airport · Richmond · 160 km from IAD
large airport · America/New_York · united-states · 167 ft (51 m) · 37.5052, -77.3197
4. PHL KPHL
Philadelphia International Airport · Philadelphia · 216 km from IAD
large airport · America/New_York · united-states · 36 ft (11 m) · 39.8719, -75.2411
5. ORF KORF
Norfolk International Airport · Norfolk · 253 km from IAD
large airport · America/New_York · united-states · 26 ft (8 m) · 36.8953, -76.2010
6. PIT KPIT
Pittsburgh International Airport · Pittsburgh · 293 km from IAD
large airport · America/New_York · united-states · 1,203 ft (367 m) · 40.4915, -80.2329
Country and authority
IAD sits in United States (United States of America), whose capital is Washington, D.C.. Federal Aviation Administration (FAA) is the national civil-aviation authority we name for regulator context. Country context: Americas, North America.
Traveler context
Common country-language signals: English. Currency context: USD ($). IAD is listed with scheduled service in the airport source snapshot.
Names and local labels
IAD is also associated in the airport facts snapshot with WAS. These labels help catch alternate airport names without creating separate duplicate airport pages.
Reference description
Airport in Dulles, Virginia, United States. This description is used only as identity context; live flight status, terminal assignment, and airport alerts still belong to the official airport or airline source.
Source-specific cues
Regional role cue: Washington Dulles International Airport is the main international airport serving Washington, D.C., the capital of the United States. Location cue: It is located 26 miles (42 km) west of downtown Washington, D.C., in Loudoun and Fairfax counties in Northern Virginia.
Entity fingerprint
Wikidata airport entity: Q466835 · Washington Dulles International Airport. Owner / owning body: Metropolitan Washington Airports Authority. Administrative area: Virginia · Fairfax County · Loudoun County. Named after: Washington, D.C. · John Foster Dulles
Field and clock profile
Washington Dulles International Airport is a low-elevation field at 312 ft (95 m), positioned at 38.9445° N, 77.4558° W in the Northern mid-latitudes. The runway snapshot lists 4 runways and a longest runway of 11,500 ft / 3,505 m. The airport clock uses America/New_York (EDT, UTC-04:00), so cross-date arrivals should be checked against this zone rather than the airline origin city.
City and airport alternatives
South Riding is the closest retained city-time anchor at 4.9 km. DCA Washington is the closest retained airport alternative at 38 km.
Country airport peers
IAD is compared with DCA Washington at 38 km, BWI Baltimore at 73 km, RIC Richmond at 160 km, PHL Philadelphia at 216 km, ORF Norfolk at 253 km inside the retained United States airport set, which is useful when backup airports share the same country context but differ by city, route network, and clock behavior.
Route geometry
IAD-BWI Baltimore: 73 km, about 56m, +0h. IAD-RIC Richmond: 160 km, about 1h 2m, +0h. IAD-PHL Philadelphia: 216 km, about 1h 6m, +0h. IAD-ORF Norfolk: 253 km, about 1h 9m, +0h. These are distance and timezone references, not live flight availability claims.
Source trail
OurAirports ident KIAD backs the stable code, coordinate, elevation, and timezone record. mwaa.com is attached as the official airport website. en.wikipedia.org is used only as supporting reference context. Snapshot date: 2026-05-21.
Operational Profile
Traffic profile
Reference airport
Airline role
Mixed commercial service
Terminal footprint
See operational notes
Runway footprint
4 runways · longest 11,500 ft / 3,505 m
Runway identifiers
01C/19C, 01L/19R, 01R/19L, 12/30
OurAirports classifies IAD as a large airport with scheduled service; the airport name and codes identify it as an international gateway for Dulles.
IAD (KIAD) is a low-elevation field at 312 ft (95 m) in the mid-latitudes, kept in the curated set for its route, timezone, and market-planning value.
IAD sits in a broader regional network with 5 nearby curated alternatives, so airline choice and connection strategy are part of the planning story here.
IAD's runway record lists 4 runways, with the longest runway at 11,500 ft / 3,505 m and source surfaces recorded as concrete (3), conc-g.
Metropolitan Washington Airports Authority is the clearest operator or management signal we currently have on file for IAD.
These operational notes prefer the structured airport facts snapshot, then fall back to the accepted airport reference at mwaa.com, then blend that with local timezone, route, and city-access data already on this page.
Decision matrix for IAD
These are the specific situations where this airport page earns its keep: time-zone conversion, city transfer planning, nearby airport backup logic, and source-confidence checks before acting.
When the clock matters
IAD uses America/New_York (EDT, UTC-04:00). Use this before overnight arrivals, cross-date departures, and same-day connections.
When surface access matters
Washington Dulles International Airport is about 37 km from central Dulles; build that transfer into arrival and check-in planning.
When alternates matter
DCA Washington is the closest retained alternate at 38 km, time difference +0h.
When source checks matter
mwaa.com is listed as the official airport website in the airport facts snapshot; live schedules, gates, routes, terminals, and NOTAM-sensitive operations still need official airport or airline verification.
How this airport compares nearby
These comparisons place IAD inside the retained airport graph by country, timezone, elevation, and coordinate neighbors. They are deterministic dataset facts, not generated flight claims.
Country-rank position
IAD ranks #35 in the curated United States airport set when large airports are listed before medium airports, then sorted by IATA code. The retained country set has 94 airports.
Same-zone airport cohort
IAD shares America/New_York with ALB Albany US · ATL Atlanta US · BDL Hartford US · BOS Boston US · BUF Buffalo US · BWI Baltimore US. This helps separate same-clock airports by city, country, code, and geography.
Elevation-neighbor cohort
IAD is 312 ft (95 m). Closest elevation peers in the retained airport set include SAW 312 ft (95 m) (0 ft delta) · OMS 311 ft (95 m) (1 ft delta) · OTP 314 ft (96 m) (2 ft delta) · ATH 308 ft (94 m) (4 ft delta) · EMA 306 ft (93 m) (6 ft delta).
Coordinate-neighbor check
IAD's nearest retained coordinate neighbors are DCA 38 km +0h · BWI 73 km +0h · RIC 160 km +0h · PHL 216 km +0h.
Flight Path Arc
Great-circle route between airports with animated plane. Pick a route.
Arriving From / Departing To
| Destination | Route code | Distance | Estimated window | Time difference | Destination clock |
|---|---|---|---|---|---|
| Baltimore | BWI | 73 km | 56m | +0h | --:--:-- |
| Richmond | RIC | 160 km | 1h 2m | +0h | --:--:-- |
| Philadelphia | PHL | 216 km | 1h 6m | +0h | --:--:-- |
| Norfolk | ORF | 253 km | 1h 9m | +0h | --:--:-- |
IAD to BWI
Baltimore
Distance 73 km; estimated travel window 56m; destination zone America/New_York is +0h from IAD. Use the live destination clock on this page as a cross-timezone planning cue, not as a live flight schedule.
IAD to RIC
Richmond
Distance 160 km; estimated travel window 1h 2m; destination zone America/New_York is +0h from IAD. Use the live destination clock on this page as a cross-timezone planning cue, not as a live flight schedule.
IAD to PHL
Philadelphia
Distance 216 km; estimated travel window 1h 6m; destination zone America/New_York is +0h from IAD. Use the live destination clock on this page as a cross-timezone planning cue, not as a live flight schedule.
Airport Details
Timezone
Ground Transport and Nearby Context
Because the airport sits well outside central Dulles, surface transfer planning matters almost as much as flight timing, especially for late arrivals and early departures.
Washington is the nearest mapped city anchor in the current dataset, which makes it the cleanest companion page when travelers want to switch from airport timing into local city timing.
Washington Dulles International Airport has 5 nearby indexed airport alternatives, which makes backup departures and diversion logic part of real planning instead of a theoretical edge case.
Nearby city time anchors
Airport pages are most useful when they bridge into real city clocks. These city anchors are ranked by distance from IAD, then shown with their own timezone, local time, and time difference from the airport clock.
South Riding
south-riding · 4.9 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Oak Hill
oak-hill · 5.1 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Chantilly
chantilly · 6.0 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Herndon
herndon · 6.6 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Sterling
sterling · 7.3 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Reston
reston · 10 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Ashburn
ashburn · 11 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Centreville
centreville · 12 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Wolf Trap
wolf-trap · 15 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Oakton
oakton · 15 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Great Falls
great-falls · 16 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Fairfax
fairfax · 17 km · America/New_York
- Local time
- --:--:--
- Diff
- +0h
Airlines and Network Role
Washington Dulles International Airport does not have a long carrier list in the current source trail, so this page emphasizes the durable pieces travelers can safely use here: local time, field identifiers, nearby airports, and timezone differences.
The route timing references show the first cross-timezone planning burden after this airport: Baltimore (BWI), Richmond (RIC), Philadelphia (PHL). Treat them as distance and clock cues, then verify flight availability with the carrier.
Planning checkpoints
- Traffic signal: not clearly stated in the source trail.
- Terminal footprint: not clearly stated in the source trail.
- Runway footprint: 4 runways; longest runway 11,500 ft / 3,505 m; identifiers 01C/19C, 01L/19R, 01R/19L.
- Runway surfaces: concrete (3), conc-g; 4 lighted runways in the source snapshot.
- Operator / management: Metropolitan Washington Airports Authority.
- Opened / inaugurated: 1962.
- Network role: mixed or not clearly stated in the source trail.
Nearby Airports
Nearby airports are ranked by coordinate distance from IAD. The time difference column is computed from IANA zones against the page snapshot, while the local clocks update in the browser.
Ronald Reagan Washington National AirportDCA
Washington · large airport
- Distance
- 38 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 15 ft (5 m)
Compare against DCA when route choice, backup departures, or arrival-side local time matters.
Baltimore/Washington International Thurgood Marshall AirportBWI
Baltimore · large airport
- Distance
- 73 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 146 ft (45 m)
Compare against BWI when route choice, backup departures, or arrival-side local time matters.
Richmond International AirportRIC
Richmond · large airport
- Distance
- 160 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 167 ft (51 m)
Compare against RIC when route choice, backup departures, or arrival-side local time matters.
Philadelphia International AirportPHL
Philadelphia · large airport
- Distance
- 216 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 36 ft (11 m)
Compare against PHL when route choice, backup departures, or arrival-side local time matters.
Norfolk International AirportORF
Norfolk · large airport
- Distance
- 253 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 26 ft (8 m)
Compare against ORF when route choice, backup departures, or arrival-side local time matters.
Questions
FAQ
What timezone is Washington Dulles International Airport (IAD) in?▾
Washington Dulles International Airport is in the America/New_York timezone (UTC-04:00, EDT).
What are the codes for Washington Dulles International Airport?▾
Washington Dulles International Airport uses IATA code IAD and ICAO code KIAD.
Where is Washington Dulles International Airport located?▾
Washington Dulles International Airport is located in Dulles, United States at coordinates 38.9445° N, 77.4558° W, with an elevation of 312 ft (95 m) (low-elevation field in the mid-latitudes).
How far is Washington Dulles International Airport from central Dulles?▾
Washington Dulles International Airport sits roughly 37 km from the nearest mapped city center for Dulles.
Which route reference is most useful from IAD?▾
Baltimore (BWI) is one of the closest route references on this page, with an estimated travel window of 56m, destination timezone America/New_York, and a +0h difference from IAD.
Which authority regulates IAD?▾
Washington Dulles International Airport sits inside United States, where civil aviation oversight is led by the Federal Aviation Administration (FAA).
What other airports in United States are close peers to IAD?▾
IAD's curated peers in United States on this site include DCA Washington, BWI Baltimore, RIC Richmond, plus 3 more.
How many runways does Washington Dulles International Airport have?▾
Washington Dulles International Airport's source-backed operational summary lists 4 runways, with the longest runway recorded at 11,500 ft / 3,505 m; identifiers include 01C/19C, 01L/19R, 01R/19L.