SEA · Seattle, United States
Seattle–Tacoma International Airport.
--:--:-- · PDT (UTC-07:00) · 47.4479° N, 122.3103° W
Seattle–Tacoma International Airport
Airport serving Seattle, Washington, United States
Verification trail
Source-backed facts for SEA
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 3875; ident KSEA; scheduled service listed.
Cached airports.csv snapshot: 2026-04-25; runways.csv snapshot: 2026-05-21.
Official airport source
portseattle.org
Used as the preferred live-reference handoff for terminals, gates, alerts, and airport notices.
Open sourceReference summary
Seattle–Tacoma International Airport
Airport-shaped reference summary from en.wikipedia.org; summary snapshot 2026-05-20.
Open sourceManual / derived signals
23 source-backed signals
Merged from OurAirports cached airports.csv, OurAirports cached runways.csv, Wikidata airport entity snapshot, airport-shaped Wikipedia summary snapshot, manual airport facts override; facts generated 2026-05-21.
IATA / ICAO
SEA / KSEA
OurAirports ident
KSEA
GPS / local code
KSEA / SEA
ISO region
US-WA
Scheduled service
Listed in source snapshot
Role
international scheduled-service gateway
Official host
portseattle.org
Reference host
en.wikipedia.org
Wikidata entity
Q14295
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, 7:10 PM UTC.
What you need to know now
Local airport time
--:--:--PDT · UTC-07:00
Time zone
PDT
America/Los_Angeles · UTC-07:00
Airfield conditions
Live airport weather is temporarily unavailable.
Surface access
18 km
Approximate distance to central Seattle.
Airport Snapshot
Country capital
Washington, D.C.
Languages
English
Currency
USD ($)
Country area
9,525,067 km²
Passenger volume
Source note unavailable
Terminals
1 main terminal / 2 satellite terminals
Runways
3 runways
Longest runway
11,901 ft / 3,627 m
Runway surface
PEM (3)
Opened / operator
1944 · Port of Seattle
Owner / entity
Q14295
Hub airlines
Alaska Airlines, Delta Air Lines
Airport role
international scheduled-service gateway
Scheduled service
Listed
Fact coverage
23 source-backed signals
Seattle–Tacoma International Airport is a international scheduled-service gateway for Seattle, United States. Seattle's built-up core sits roughly 18 km from the terminal area. Operations run on America/Los_Angeles (UTC-07:00, PDT). Live weather is temporarily unavailable. With 3 other indexable airports in its surrounding network, it works well as a reference point for regional flight planning and timezone checks.
Seattle–Tacoma International Airport (SEA / KSEA) is at 47.4479° N, 122.3103° W, elevation 433 ft (132 m), serving Seattle, United States.
The accepted reference summary is used as supporting context for the airport identity and operating notes; the timed facts here still come from the airport catalog, timezone database, country snapshot, and linked source trail.
Seattle is in United States (capital Washington, D.C.); regulated by Federal Aviation Administration (FAA); on America/Los_Angeles (PDT, UTC-07:00); working languages: English; currency: USD ($).
Distance from central Seattle: 18 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 SEA.
Name and identity cues
Primary airport name
Seattle–Tacoma International Airport (SEA / KSEA)
Seattle–Tacoma International Airport · Airport serving Seattle, Washington, United States
Known label 1
Sea-Tac Airport
Alternate airport-name cue retained for SEA, not a separate indexable duplicate page.
Known label 2
SeaTac Airport
Alternate airport-name cue retained for SEA, not a separate indexable duplicate page.
Source identifiers
KSEA · KSEA · SEA · US-WA
portseattle.org · en.wikipedia.org · scheduled service yes
Source-specific airport notes
Regional role cue
Seattle–Tacoma International Airport is the primary international airport serving Seattle and its surrounding metropolitan area in the U.S.
Accepted from the airport reference trail as a role-specific cue for SEA; not treated as a live service guarantee.
Closest mapped city anchors
1. SeaTac
seatac · 1.4 km from SEA
United States · America/Los_Angeles · +0h · population 28,215 · city coordinates 47.4485, -122.2922
2. Burien
burien · 3.7 km from SEA
United States · America/Los_Angeles · +0h · population 50,467 · city coordinates 47.4704, -122.3468
3. Tukwila
tukwila · 4.7 km from SEA
United States · America/Los_Angeles · +0h · population 20,018 · city coordinates 47.4740, -122.2610
4. Des Moines
des-moines-5792244 · 5.2 km from SEA
United States · America/Los_Angeles · +0h · population 31,221 · city coordinates 47.4018, -122.3243
5. Bryn Mawr-Skyway
bryn-mawr-skyway · 7.3 km from SEA
United States · America/Los_Angeles · +0h · population 15,645 · city coordinates 47.4943, -122.2409
6. Renton
renton · 8.0 km from SEA
United States · America/Los_Angeles · +0h · population 100,242 · city coordinates 47.4829, -122.2171
Airport alternatives in the retained graph
1. YYJ CYYJ
Victoria International Airport · Victoria
157 km from SEA · America/Vancouver · +1h · elevation 63 ft (19 m) · airport coordinates 48.6472, -123.4278
2. YVR CYVR
Vancouver International Airport · Vancouver
205 km from SEA · America/Vancouver · +1h · elevation 14 ft (4 m) · airport coordinates 49.1939, -123.1840
3. PDX KPDX
Portland International Airport · Portland
208 km from SEA · America/Los_Angeles · +0h · elevation 31 ft (9 m) · airport coordinates 45.5887, -122.5980
Route-time reference set
1. SEA-YYJ
Victoria · 157 km · 1h 2m
America/Vancouver · +1h from SEA; reference route only, not a live schedule.
2. SEA-YVR
Vancouver · 205 km · 1h 6m
America/Vancouver · +1h from SEA; reference route only, not a live schedule.
3. SEA-PDX
Portland · 208 km · 1h 6m
America/Los_Angeles · +0h from SEA; reference route only, not a live schedule.
Runway source evidence
Published runway count
3 runways
Longest runway 11,901 ft / 3,627 m. 3 lighted runways in the runway snapshot.
Runway surface mix
PEM (3)
Surface labels are normalized from the OurAirports runway rows for SEA.
Runway identifiers
16C/34C · 16L/34R · 16R/34L
Identifier pairs are retained as airport-specific runway cues, not live operational availability claims.
Same-country airport context
1. PDX KPDX
Portland International Airport · Portland · 208 km from SEA
large airport · America/Los_Angeles · united-states · 31 ft (9 m) · 45.5887, -122.5980
2. GEG KGEG
Spokane International Airport · Spokane · 359 km from SEA
large airport · America/Los_Angeles · united-states · 2,376 ft (724 m) · 47.6199, -117.5340
3. BOI KBOI
Boise Air Terminal/Gowen Field · Boise · 641 km from SEA
large airport · America/Boise · united-states · 2,871 ft (875 m) · 43.5644, -116.2230
4. RNO KRNO
Reno Tahoe International Airport · Reno · 907 km from SEA
large airport · America/Los_Angeles · united-states · 4,415 ft (1,346 m) · 39.4991, -119.7680
5. SMF KSMF
Sacramento International Airport · Sacramento · 975 km from SEA
large airport · America/Los_Angeles · united-states · 27 ft (8 m) · 38.6954, -121.5910
6. OAK KOAK
San Francisco Bay Oakland International Airport · Oakland · 1082 km from SEA
large airport · America/Los_Angeles · united-states · 9 ft (3 m) · 37.7201, -122.2212
Accepted operational notes
Source note 1
Seattle-Tacoma International Airport is the main commercial airport for the Seattle metropolitan area.
Retained as a source-backed local role note for SEA.
Source note 2
The airport is owned and operated by the Port of Seattle.
Retained as a source-backed local role note for SEA.
Source note 3
The airport is the busiest in the Pacific Northwest region of North America and is owned by the Port of Seattle.
Retained as a source-backed local role note for SEA.
Country and authority
SEA 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 ($). SEA is listed with scheduled service in the airport source snapshot.
Names and local labels
SEA is also associated in the airport facts snapshot with Sea-Tac Airport, SeaTac Airport. These labels help catch alternate airport names without creating separate duplicate airport pages.
Reference description
Airport serving Seattle, Washington, 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: Seattle–Tacoma International Airport is the primary international airport serving Seattle and its surrounding metropolitan area in the U.S.
Entity fingerprint
Wikidata airport entity: Q14295 · Seattle–Tacoma International Airport. Administrative area: SeaTac. Named after: Seattle · Tacoma
Field and clock profile
Seattle–Tacoma International Airport is a low-elevation field at 433 ft (132 m), positioned at 47.4479° N, 122.3103° W in the Northern mid-latitudes. The runway snapshot lists 3 runways and a longest runway of 11,901 ft / 3,627 m. The airport clock uses America/Los_Angeles (PDT, UTC-07:00), so cross-date arrivals should be checked against this zone rather than the airline origin city.
City and airport alternatives
SeaTac is the closest retained city-time anchor at 1.4 km. YYJ Victoria is the closest retained airport alternative at 157 km.
Country airport peers
SEA is compared with PDX Portland at 208 km, GEG Spokane at 359 km, BOI Boise at 641 km, RNO Reno at 907 km, SMF Sacramento at 975 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
SEA-YYJ Victoria: 157 km, about 1h 2m, +1h. SEA-YVR Vancouver: 205 km, about 1h 6m, +1h. SEA-PDX Portland: 208 km, about 1h 6m, +0h. These are distance and timezone references, not live flight availability claims.
Source trail
OurAirports ident KSEA backs the stable code, coordinate, elevation, and timezone record. portseattle.org 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
Alaska Airlines, Delta Air Lines
Terminal footprint
1 main terminal / 2 satellite terminals
Runway footprint
3 runways · longest 11,901 ft / 3,627 m
Runway identifiers
16C/34C, 16L/34R, 16R/34L
OurAirports classifies SEA as a large airport with scheduled service; the airport name and codes identify it as an international gateway for Seattle.
SEA (KSEA) is a low-elevation field at 433 ft (132 m) in the mid-latitudes, kept in the curated set for its route, timezone, and market-planning value.
SEA also has a clear airline-network role: the source summary describes it as pacific northwest gateway and primary hub for alaska airlines, with a major delta air lines operation..
SEA's runway record lists 3 runways, with the longest runway at 11,901 ft / 3,627 m and source surfaces recorded as PEM (3).
Port of Seattle is the clearest operator or management signal we currently have on file for SEA.
- Seattle-Tacoma International Airport is the main commercial airport for the Seattle metropolitan area.
- The airport is owned and operated by the Port of Seattle.
- The airport is the busiest in the Pacific Northwest region of North America and is owned by the Port of Seattle.
These operational notes prefer the structured airport facts snapshot, then fall back to the accepted airport reference at portseattle.org, then blend that with local timezone, route, and city-access data already on this page.
Decision matrix for SEA
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
SEA uses America/Los_Angeles (PDT, UTC-07:00). Use this before overnight arrivals, cross-date departures, and same-day connections.
When surface access matters
Seattle–Tacoma International Airport is about 18 km from central Seattle; build that transfer into arrival and check-in planning.
When alternates matter
YYJ Victoria is the closest retained alternate at 157 km, time difference +1h.
When source checks matter
portseattle.org 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 SEA inside the retained airport graph by country, timezone, elevation, and coordinate neighbors. They are deterministic dataset facts, not generated flight claims.
Country-rank position
SEA ranks #81 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
SEA shares America/Los_Angeles with BUR Burbank US · FAT Fresno US · GEG Spokane US · LAS Las Vegas US · LAX Los Angeles US · LGB Long Beach US. This helps separate same-clock airports by city, country, code, and geography.
Elevation-neighbor cohort
SEA is 433 ft (132 m). Closest elevation peers in the retained airport set include MEL 434 ft (132 m) (1 ft delta) · ELS 435 ft (133 m) (2 ft delta) · RDU 435 ft (133 m) (2 ft delta) · BTS 436 ft (133 m) (3 ft delta) · CIA 427 ft (130 m) (6 ft delta).
Coordinate-neighbor check
SEA's nearest retained coordinate neighbors are YYJ 157 km +1h · YVR 205 km +1h · PDX 208 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 |
|---|---|---|---|---|---|
| Victoria | YYJ | 157 km | 1h 2m | +1h | --:--:-- |
| Vancouver | YVR | 205 km | 1h 6m | +1h | --:--:-- |
| Portland | PDX | 208 km | 1h 6m | +0h | --:--:-- |
SEA to YYJ
Victoria
Distance 157 km; estimated travel window 1h 2m; destination zone America/Vancouver is +1h from SEA. Use the live destination clock on this page as a cross-timezone planning cue, not as a live flight schedule.
SEA to YVR
Vancouver
Distance 205 km; estimated travel window 1h 6m; destination zone America/Vancouver is +1h from SEA. Use the live destination clock on this page as a cross-timezone planning cue, not as a live flight schedule.
SEA to PDX
Portland
Distance 208 km; estimated travel window 1h 6m; destination zone America/Los_Angeles is +0h from SEA. 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
The airport sits in the normal outer-ring range for a major metro gateway, so rail, shuttle coach, and ride-hail all matter when you judge the fastest arrival.
Seattle 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.
Seattle–Tacoma International Airport has 3 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 SEA, then shown with their own timezone, local time, and time difference from the airport clock.
SeaTac
seatac · 1.4 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Burien
burien · 3.7 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Tukwila
tukwila · 4.7 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Des Moines
des-moines-5792244 · 5.2 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Bryn Mawr-Skyway
bryn-mawr-skyway · 7.3 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Renton
renton · 8.0 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Kent
kent-5799625 · 9.4 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
East Hill-Meridian
east-hill-meridian · 11 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Fairwood
fairwood · 12 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Columbia City
columbia-city · 13 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Federal Way
federal-way · 14 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Mercer Island
mercer-island · 15 km · America/Los_Angeles
- Local time
- --:--:--
- Diff
- +0h
Airlines and Network Role
Seattle–Tacoma International Airport is associated in the current source trail with Alaska Airlines, Delta Air Lines, which makes carrier-specific schedule checks especially important before acting on a route plan.
The route timing references show the first cross-timezone planning burden after this airport: Victoria (YYJ), Vancouver (YVR), Portland (PDX). Treat them as distance and clock cues, then verify flight availability with the carrier.
Pacific Northwest gateway and primary hub for Alaska Airlines, with a major Delta Air Lines operation..
Planning checkpoints
- Traffic signal: not clearly stated in the source trail.
- Terminal footprint: 1 main terminal / 2 satellite terminals.
- Runway footprint: 3 runways; longest runway 11,901 ft / 3,627 m; identifiers 16C/34C, 16L/34R, 16R/34L.
- Runway surfaces: PEM (3); 3 lighted runways in the source snapshot.
- Operator / management: Port of Seattle.
- Opened / inaugurated: 1944.
- Network role: Alaska Airlines, Delta Air Lines.
Nearby Airports
Nearby airports are ranked by coordinate distance from SEA. The time difference column is computed from IANA zones against the page snapshot, while the local clocks update in the browser.
Victoria International AirportYYJ
Victoria · large airport
- Distance
- 157 km
- Local time
- --:--:--
- Time diff
- +1h
- Elevation
- 63 ft (19 m)
Compare against YYJ when route choice, backup departures, or arrival-side local time matters.
Vancouver International AirportYVR
Vancouver · large airport
- Distance
- 205 km
- Local time
- --:--:--
- Time diff
- +1h
- Elevation
- 14 ft (4 m)
Compare against YVR when route choice, backup departures, or arrival-side local time matters.
Portland International AirportPDX
Portland · large airport
- Distance
- 208 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 31 ft (9 m)
Compare against PDX when route choice, backup departures, or arrival-side local time matters.
Questions
FAQ
What timezone is Seattle–Tacoma International Airport (SEA) in?▾
Seattle–Tacoma International Airport is in the America/Los_Angeles timezone (UTC-07:00, PDT).
What are the codes for Seattle–Tacoma International Airport?▾
Seattle–Tacoma International Airport uses IATA code SEA and ICAO code KSEA.
Where is Seattle–Tacoma International Airport located?▾
Seattle–Tacoma International Airport is located in Seattle, United States at coordinates 47.4479° N, 122.3103° W, with an elevation of 433 ft (132 m) (low-elevation field in the mid-latitudes).
How far is Seattle–Tacoma International Airport from central Seattle?▾
Seattle–Tacoma International Airport sits roughly 18 km from the nearest mapped city center for Seattle.
Which route reference is most useful from SEA?▾
Victoria (YYJ) is one of the closest route references on this page, with an estimated travel window of 1h 2m, destination timezone America/Vancouver, and a +1h difference from SEA.
Which authority regulates SEA?▾
Seattle–Tacoma 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 SEA?▾
SEA's curated peers in United States on this site include PDX Portland, GEG Spokane, BOI Boise, plus 3 more.
How many runways does Seattle–Tacoma International Airport have?▾
Seattle–Tacoma International Airport's source-backed operational summary lists 3 runways, with the longest runway recorded at 11,901 ft / 3,627 m; identifiers include 16C/34C, 16L/34R, 16R/34L.