Cheap flights from St. Louis, MO to Seattle, WA
Flights starting at $83. Choose between Delta Air Lines, Alaska Airlines, or United Airlines to find the best price.
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Tips to know when travelling to Seattle
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Weekly direct flights
Mondays | Tuesdays | Wednesdays | Thursdays | Fridays | Saturdays | Sundays | |
---|---|---|---|---|---|---|---|
Direct flights | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
American Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.
Alaska Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.
Check-in for a flight from St. Louis to Seattle
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Delta Air Lines | DAL | DL | Yes | Opens 24 days before flight Closes 1 hours before flight |
Alaska Airlines | ASA | AS | Yes | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
American Airlines | AAL | AA | Yes | No |
United States COVID-19 travel restrictions
Most travelers from St Louis, STL can enter Seattle, SEA.
Departure
Additional information |
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Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
Frequently asked questions
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Flights from St. Louis
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Flights to Seattle
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Airports near St. Louis
- St. Louis Lambert International
- General Wayne A. Downing Peoria International
- Central Illinois Regional
- MidAmerica St. Louis
- Barkley Regional
- Waynesville-St. Robert Regional
- Cape Girardeau Regional
- Evansville Regional
- Abraham Lincoln Capital
- Williamson County Regional
Airports near Seattle
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