Airport guide
Seattle-Tacoma International AirportIATA code SEA
Seattle-Tacoma International Airport (SEA/KSEA) is the primary air passenger gateway serving Seattle, United States in North America. Originfacts tracks 3 direct destinations departing from SEA.
- Serves
- Seattle, United States
- Codes
- SEA · KSEA
- IATA · ICAO
- Time zone
- America/Los_Angeles
- Region
- North America
Seattle-Tacoma International Airport (SEA/KSEA) is the primary air passenger gateway serving Seattle, United States in North America. Operating on America/Los_Angeles local time at coordinates 47.440°, -122.300°, the airfield functions as an active commercial transit hub for scheduled regional and international flights. Originfacts tracks 3 destinations departing from SEA, with primary carrier operations including American Airlines, Alaska Airlines, United Airlines and Delta Air Lines, connecting key routes to Chicago, San Francisco and Los Angeles. Passengers traveling through Seattle-Tacoma International Airport are advised to verify terminal assignments, compare ground transport links into Seattle, and plan check-in times with their operating airline before departure.
Seattle-Tacoma International Airport details
- IATA code
- SEA
- ICAO code
- KSEA
- City
- Seattle
- Country
- United States
- Region
- North America
- Time zone
- America/Los_Angeles
- Coordinates
- 47.448°, -122.310°
- From OurAirports
Codes, region and time zone come from the Originfacts airport record (last updated 2 May 2026). Fields marked otherwise come from the dataset named on them. None are verified by hand against Seattle-Tacoma International Airport’s own pages.
SEA airport facts
- Size class
- Large airport
- From OurAirports (5 Oct 2026); OurAirports’ own classification
- Elevation
- 132 m (433 ft)
- From OurAirports (5 Oct 2026)
- Passengers, 2025
- 52.7 million
- Per Wikidata (opens in a new tab) (retrieved 5 Oct 2026), citing portseattle.org (opens in a new tab)
- Nearest airport with scheduled flights
- King County International Airport - Boeing Field BFI · 9 km
- OurAirports scheduled-service flag; straight-line distance calculated
Runways at SEA
Source: OurAirports (opens in a new tab) runways data (public domain), retrieved 5 Oct 2026. Not an aeronautical source — not for navigation.
3 open runways, all lit. Longest 16L/34R: 3,627 m, concrete. OurAirports also lists 1 closed runway, not shown.
| Runway | Length | Width | Surface | Lighting |
|---|---|---|---|---|
| 16L/34R | 3,627 m11,901 ft | 46 m | concrete | Lit |
| 16C/34C | 2,873 m9,426 ft | 46 m | concrete | Lit |
| 16R/34L | 2,591 m8,500 ft | 46 m | concrete | Lit |
Airlines and destinations from SEA
Source: Travelpayouts fare data, 5 Oct 2026 — destinations where travellers found a nonstop fare from SEA in the days before that date. Not a complete or live schedule.
Nonstop fares from SEA to 60 destinations in 14 countries, on 15 airlines. Originfacts’ own route records for SEA are listed separately below.
Airlines named on the fares
- ASAlaska Airlines38 destinations
- AAAmerican Airlines5 destinations
- WNSouthwest Airlines4 destinations
- F9Frontier Airlines2 destinations
- AMAeroméxico1 destination
- CXCathay Pacific1 destination
- EKEmirates1 destination
- HUHainan Airlines1 destination
- FIIcelandair1 destination
- JLJapan Airlines1 destination
- KEKorean Air1 destination
- PRPhilippine Airlines1 destination
- SQSingapore Airlines1 destination
- TKTurkish Airlines1 destination
- Y4Volaris1 destination
The airline on a fare can be the seller of a codeshare flown by a partner. Linked names are matched to Originfacts airline pages by code and name; others are shown as the fare data names them.
Destinations by country
- United States (43)
- Anchorage, Atlanta, Austin, Baltimore, Boise, Boston, Bozeman, Charlotte, Chicago, Cincinnati, Dallas, Denver, Fort Lauderdale, Fort Myers, Honolulu, Houston, Idaho Falls, Kahului, Las Vegas, Long Beach, Los Angeles, Miami, Milwaukee, Minneapolis, Missoula, New Orleans, New York, Oakland, Omaha, Ontario, Orlando, Phoenix, Portland, Pullman, Redmond, Reno, Sacramento, San Antonio, San Diego, San Francisco, San Jose, Tampa, Washington
- Mexico (4)
- Cancun, Guadalajara, Mexico City, Puerto Vallarta
- Canada (2)
- Edmonton, Toronto
- China (1)
- Beijing
- Hong Kong (1)
- Hong Kong
- Iceland (1)
- Reykjavik
- Italy (1)
- Rome
- Japan (1)
- Tokyo
- Philippines (1)
- Manila
- Singapore (1)
- Singapore
- South Korea (1)
- Seoul
- Turkiye (1)
- Istanbul
- United Arab Emirates (1)
- Dubai
- United Kingdom (1)
- London
Linked destinations also have an Originfacts route record from SEA.
Check schedules with the airline or Seattle-Tacoma International Airport before you book.
Airlines on routes from SEA
Source: Originfacts route records, last updated 21 May 2026. Not verified by hand.
The airlines listed on the 3 routes Originfacts tracks from SEA. Only 3 routes from SEA are in Originfacts’ route records so far — a small sample, not Seattle-Tacoma International Airport’s full network. This is not a complete list of airlines at Seattle-Tacoma International Airport.
Routes from SEA
Source: Originfacts route records, last updated 21 May 2026. Not verified by hand.
The 3 routes Originfacts tracks from SEA so far, listed with the distance and estimated flight time in each route record. Only 3 routes from SEA are in Originfacts’ route records so far — a small sample, not Seattle-Tacoma International Airport’s full network. Check live schedules with the airline.
Full list of destinations: portseattle.org/sea-tac (opens in a new tab) (the airport’s official site)
Airlines with a hub at SEA
Per Wikidata (opens in a new tab) (retrieved 5 Oct 2026): airlines whose “airline hub” property names SEA, with no end date and not recorded as dissolved. Community-edited; hubs change.
Where SEA is
18 km south
Seattle-Tacoma International Airport lies 18 km south of Seattle city centre in a straight line. Road distance is longer; transport options are not yet verified (see terminals and transport below).
Calculated from the airport coordinates (OurAirports) and the Wikidata (opens in a new tab) city-centre point.
Terminals, transport and parking at SEA
Terminal assignments, ground transport into Seattle, parking, lounges and accessibility services have not been verified against Seattle-Tacoma International Airport’s own pages yet, so none are listed here.
Check directly:portseattle.org/sea-tac (opens in a new tab)Map of the airport location (opens in a new tab)
Before you travel
- Confirm your terminal with the operating airline.
- Check the check-in and bag-drop cut-off times on your booking.
- Allow extra time if you need to change terminals or check bags in again.
- Check your flight status before you leave for the airport.
Climate at SEA, month by month
Source: NASA POWER (opens in a new tab) daily values for 2016–2025 at 47.44°, -122.30° (MERRA-2 reanalysis grid, about 50 km cells), averaged by Originfacts. Modelled, not airport weather-station readings.
Warmest: August (average high 24°C). Coolest: December (7°C high, 2°C low). Wettest: December (199 mm); driest: July (15 mm).
| Month | High | Low | Temperature range | Rain |
|---|---|---|---|---|
| Jan | 7°C | 2°C | 179 mm | |
| Feb | 7°C | 1°C | 137 mm | |
| Mar | 11°C | 3°C | 120 mm | |
| Apr | 14°C | 5°C | 94 mm | |
| May | 18°C | 8°C | 64 mm | |
| Jun | 20°C | 11°C | 57 mm | |
| Jul | 23°C | 13°C | 15 mm | |
| Aug | 24°C | 14°C | 24 mm | |
| Sep | 20°C | 11°C | 60 mm | |
| Oct | 15°C | 7°C | 134 mm | |
| Nov | 10°C | 4°C | 188 mm | |
| Dec | 7°C | 2°C | 199 mm |
Airports near Seattle
Straight-line distances calculated from each airport’s coordinates in the Originfacts airport records. Road distances are longer.
- SeattleBoeing Field International AirportBFI11 km
- EverettSnohomish County - Paine FieldPAE52 km
- Friday HarborFriday Harbor AirportFRD132 km
- VictoriaVictoria Inner Harbour AirportYWH135 km
- EastsoundOrcas Island AirportESD148 km
- BellinghamBellingham International AirportBLI152 km
- WenatcheePangborn FieldEAT157 km
- VictoriaVictoria International AirportYYJ158 km
- YakimaYakima Air TerminalYKM165 km
Seattle-Tacoma International Airport: common questions
Where is Seattle-Tacoma International Airport?
Seattle-Tacoma International Airport serves Seattle, United States. Its coordinates in OurAirports are 47.448°, -122.310°.
What are the airport codes for Seattle-Tacoma International Airport?
The IATA code is SEA and the ICAO code is KSEA.
What time zone is SEA in?
Seattle-Tacoma International Airport is in the America/Los_Angeles time zone.
What is the official website of Seattle-Tacoma International Airport?
The airport’s official website is portseattle.org/sea-tac. For questions about a booking, contact the operating airline.
Which airlines are listed on routes from SEA?
Originfacts’ route records (last updated 21 May 2026) list American Airlines, Alaska Airlines, United Airlines and Delta Air Lines on routes from SEA. This is not a complete list of airlines at Seattle-Tacoma International Airport; check current schedules with the airline.
Where can you fly from SEA?
Originfacts’ route records (last updated 21 May 2026) include only 3 routes from SEA so far, to Chicago, San Francisco and Los Angeles. That is a small sample, not Seattle-Tacoma International Airport’s full network. For the full list of destinations, check the airport’s official website (portseattle.org/sea-tac) or the airlines.
How many runways does Seattle-Tacoma International Airport have?
OurAirports lists 3 open runways at SEA: 16L/34R (3,627 m (11,901 ft), concrete); 16C/34C (2,873 m (9,426 ft), concrete); 16R/34L (2,591 m (8,500 ft), concrete).
Where can you fly nonstop from SEA?
Travelpayouts fare data retrieved 5 Oct 2026 showed nonstop fares from SEA to 60 destinations in 14 countries, the most in United States (43), Mexico (4) and Canada (2). That reflects fares travellers found, not a complete or live schedule.
When did Seattle-Tacoma International Airport open?
Wikidata gives 1944 as its official opening date.
How many passengers use Seattle-Tacoma International Airport?
Wikidata records 52.7 million passengers for 2025, the latest year it holds.
Who operates Seattle-Tacoma International Airport?
Per Wikidata, SEA is operated by Port of Seattle.
Which airlines have a hub at SEA?
Wikidata lists SEA as a hub of Alaska Airlines, Delta Air Lines and Horizon Air.
Sources
Nothing on this page is verified by hand yet. Each section comes from the dataset below, with its date where the dataset has one. Terminal, transport and parking details are left out until they can be read from Seattle-Tacoma International Airport’s own pages.
- Codes, location, time zoneOriginfacts airport record2 May 2026
- Official websiteWikidata record (official website property) (opens in a new tab)5 Oct 2026
- Coordinates, runways, type, elevationOurAirports (opens in a new tab) — public domain5 Oct 2026
- Opening, operator, passengers, hubsWikidata item Q14295 (opens in a new tab) — CC05 Oct 2026
- Nonstop destinations, airlines on faresTravelpayouts Data API (Aviasales fare cache) — fares found, not a complete or live schedule5 Oct 2026
- ClimateNASA POWER (opens in a new tab) daily data (MERRA-2 reanalysis), averaged by Originfacts2016–2025
- Distance to city centreCalculated from airport coordinates and the Wikidata (opens in a new tab) city-centre point—
- Airlines and routesOriginfacts route records — the routes we track, not a full schedule21 May 2026
- Nearby airportsCalculated from airport coordinates—
- Terminals and transportNot yet verified—
Background reading:Wikipedia (opens in a new tab)Wikidata (opens in a new tab)