Seattle to St Louis

SEASTL

Fly from Seattle to St Louis starting at USD 93 with American Airlines.Best fare available on Sep 9, 2026.Limited seats. Better plans. Book before it's gone.

Seattle to St Louis cheapest flights this week

28 Aug
Frontier Airlines
21:29SEA
15:22STL
2 StopUSD 254VIEW DEAL
7 Sept
United Airlines
22:58SEA
09:27STL
1 StopUSD 160VIEW DEAL
9 Sept
American Airlines
05:30SEA
14:40STL
1 StopUSD 93VIEW DEAL
10 Nov
American Airlines
15:15SEA
21:59STL
1 StopUSD 110VIEW DEAL

Seattle to St Louis monthly flight fare trend

Aug
from USD 254
Sep
from USD 93
Oct
No flights
Nov
from USD 110
Dec
No flights
Jan
No flights

Airport Details

Origin

Seattle

Seattle–Tacoma International Airport (SEA)

Seattle, SEA
Zone

Los Angeles

Elev

433 ft

Destination

St Louis

St. Louis Lambert International Airport (STL)

St Louis, STL
Zone

Chicago

Elev

618 ft

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