Book your SEA to STL flights with Expedia and find last-minute Seattle to St. Louis airfare. Expedia offers discount airfare on multiple airline carriers that fly direct and indirect routes between SEA and STL, with new flight deals and promotions almost daily. When you book your next trip from Seattle Tacoma Intl. to Lambert St. Louis Intl. with Expedia, you can rest assured you’re getting great ticket prices and excellent service from one of the world’s most trusted travel providers.
SEA to STL Flight Schedule
|Carrier||Flight||Depart SEA||Arrive STL||Sat 11/28||Sun 11/29||Mon 11/30||Tue 12/1||Wed 12/2||Thu 12/3||Fri 12/4|
|Southwest Airlines||WN 196||8:15 AM||7:20 PM||-||•||•||-||-||-||-|
|Alaska Airlines||AS 748||12:05 PM||5:49 PM||Check fare||Check fare||Check fare||Check fare||Check fare||Check fare||Check fare|
|Southwest Airlines||WN 1919||12:30 PM||10:15 PM||-||•||•||-||-||-||-|
|Southwest Airlines||WN 2045||1:50 PM||10:15 PM||-||•||-||-||-||-||-|
Browse popular flight destinations from Seattle (SEA), and plan your next exciting trip. Expedia has cheap flights from Seattle on multiple airline carriers, so book your next trip today!
Browse popular flight destinations from St. Louis (STL), and plan your next exciting trip. Expedia has cheap flights from St. Louis on multiple airline carriers, so book your next trip today!
SEA to STL Route Map
Route information for flights from Seattle Tacoma Intl. to Lambert St. Louis Intl..
Airline carriers and aircraft used on flights from SEA to STL
|Alaska Airlines, Inc.||Boeing 737-800 (winglets) pax|
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