St Louis to Seattle
STLSEA
Fly from St Louis to Seattle starting at USD 171 with Alaska Airlines.
Best fare available on Sep 3, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Seattle cheapest flights this week
St Louis to Seattle monthly flight fare trend
Sep
from USD 171
Oct
No flights
Nov
No flights
Dec
No flights
Jan
No flights
Feb
No flights
Airport Details
Origin
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
Destination
Seattle
Seattle–Tacoma International Airport (SEA)
Seattle, SEA
Zone
Los Angeles
Elev
433 ft
Flights from St Louis
Flights from St Louis to AtlantaFlights from St Louis to AustinFlights from St Louis to BostonFlights from St Louis to CharlotteFlights from St Louis to DenverFlights from St Louis to DallasFlights from St Louis to DetroitFlights from St Louis to NewarkFlights from St Louis to Fort LauderdaleFlights from St Louis to Honolulu
