Seattle–Tacoma International Airport
Daylight today(Aug 30, 2026, local time)
About 13h 29m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About Seattle–Tacoma International Airport
Seattle–Tacoma International Airport is the primary international airport serving Seattle and its surrounding metropolitan area in the U.S. state of Washington. It is in the city of SeaTac, which was named after the airport's nickname Sea–Tac, approximately 14 miles (23 km) south of downtown Seattle and 18 miles (29 km) north-northeast of downtown Tacoma. The airport is the busiest in the Pacific Northwest region of North America and is owned by the Port of Seattle.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
Live weather
KSEANOTAMs
KSEAReference only — not an official briefing. Always obtain a certified briefing (e.g. 1800wxbrief.com / your AIS) before flight.
NOTAM data via the FAA NOTAM system.
Live departures & arrivals
Flight data by AeroDataBox. Times are estimates — not for navigation; confirm with the airline.
Where you can fly from here
Current scheduled routes & daily frequency by AeroDataBox. Approximate — confirm bookable schedules with the airline.
Live traffic nearby
Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.
Live ADS-B by adsb.lol & the OpenSky Network. Not for navigation.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (4)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| lower / high | — | — | — | Lighted | Closed |
| 16L / 34R | 11,901 ft / 3,627 m | 150 ft | Pem | Lighted | Open |
| 16C / 34C | 9,426 ft / 2,873 m | 150 ft | Pem | Lighted | Open |
| 16R / 34L | 8,500 ft / 2,591 m | 150 ft | Pem | Lighted | Open |
Radio frequencies (7)
| Type | Description | Frequency |
|---|---|---|
| A/D | APP/DEP | 119.200 MHz |
| CLD | CLNC DEL | 128.000 MHz |
| CTAF | Oshosh traffic | 118.500 MHz |
| D-ATIS | Digital ATIS | 118.000 MHz |
| GND | Seattle Ground | 121.700 MHz |
| TWR | Seattle Tower | 119.900 MHz |
| UNIC | UNICOM | 122.950 MHz |
Services & operations
Arrive at least two hours before domestic flights and three hours before international flights.
From the airport’s official website — details may change, so confirm with the airport. Official site
Navaids(3)
Airlines & destinations
Route data from OpenFlights — historical and may be out of date. Check current schedules.
Instrument procedures & charts
Airport diagram (1)
Instrument approaches (4)
Departure procedures (SIDs) (4)
Arrivals (STARs) (4)
Takeoff & alternate minimums (1)
Runway hot spots (1)
Showing 15 of 63 FAA procedures on this overview. Always fly the current, official chart. Full charts page.
Airspace in this area(3)
| Name | Class | Type | Floor | Ceiling |
|---|---|---|---|---|
| SEATTLE CLASS B AREA H | Class B | Controlled | 3000 ft MSL | 10000 ft MSL |
| SEATTLE CLASS B AREA A | Class B | Controlled | GND | 10000 ft MSL |
| SEATTLE, BOEING FIELD/KING COUNTY INT. AIRPORT CLASS D | Class D | Controlled | GND | 2500 ft MSL |
Approximate bounding-box match from OpenAIP · all United States airspace. Reference only — consult official charts for exact boundaries and status.
Weather by month
Share of VFR / marginal-VFR / IFR / low-IFR conditions by month over the last 8 years, with the prevailing wind and typical density altitude. Historical climatology — not a forecast.
Prevailing wind: S (from about 180°), on 16% of observations, averaging 8 kt.
| Month | VFR / MVFR / IFR / LIFR | % VFR | Median DA |
|---|---|---|---|
| Jan | 63% | -710 ft | |
| Feb | 60% | -773 ft | |
| Mar | 72% | -509 ft | |
| Apr | 76% | -269 ft | |
| May | 78% | 131 ft | |
| Jun | 80% | 416 ft | |
| Jul | 85% | 766 ft | |
| Aug | 81% | 802 ft | |
| Sep | 80% | 555 ft | |
| Oct | 70% | -22 ft | |
| Nov | 63% | -479 ft | |
| Dec | 58% | -628 ft |
VFR MVFR IFR LIFR· density altitude ranges ~-773–802 ft through the year· Source: NWS/IEM ASOS archive.
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| Columbia Center | 938 ft | 82 ft | — |
| 1201 Third Avenue | 771 ft | 121 ft | — |
| Seattle Municipal Tower | 722 ft | 279 ft | — |
| F5 Tower | 659 ft | 115 ft | — |
| Safeco Plaza | 630 ft | 105 ft | — |
| Wells Fargo Center | 574 ft | 26 ft | — |
| 800 Fifth Avenue | 545 ft | 148 ft | — |
| Obstacle | 525 ft | 75 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Nearby airports
Great-circle distance and true bearing from Seattle–Tacoma International Airport.
Frequently asked questions
What is the ICAO code for Seattle–Tacoma International Airport?
The ICAO code for Seattle–Tacoma International Airport is KSEA, and its IATA code is SEA.
Where is Seattle–Tacoma International Airport located?
Seattle–Tacoma International Airport is large airport located in Seattle, United States, at an elevation of 433 ft (132 m).
How many runways does Seattle–Tacoma International Airport have?
Seattle–Tacoma International Airport has 4 runways, the longest being 11,901 ft / 3,627 m.
Which airlines fly to Seattle–Tacoma International Airport?
Airlines historically serving Seattle–Tacoma International Airport include AeroMéxico, Air Canada, Air France, AirTran Airways, Alaska Airlines, Alitalia, among 33 carriers (based on OpenFlights route data, which may be out of date).
How many destinations are served from Seattle–Tacoma International Airport?
Historical data lists 90 nonstop destinations from Seattle–Tacoma International Airport. Always check current schedules.
What time zone is Seattle–Tacoma International Airport in?
Seattle–Tacoma International Airport is in the America/Los Angeles time zone (UTC-07:00).
What is the magnetic variation at Seattle–Tacoma International Airport?
The magnetic variation (declination) at Seattle–Tacoma International Airport is approximately 14.9° E, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Seattle–Tacoma International Airport?
The nearest airport to Seattle–Tacoma International Airport is Renton Municipal Airport (RNT), about 4.7 nm to the ne, followed by King County International Airport - Boeing Field and Vashon Municipal Airport.
Is the information on this page suitable for flight planning?
No. Seattle–Tacoma International Airport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.