St Louis to Seattle
STLSEA
Fly from St Louis to Seattle starting at USD 137 with F9.
Best fare available on Apr 30, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Seattle cheapest flights this week
29 Apr
0P
16:49STL
--:--SEA
1 Stop$240VIEW DEAL
30 Apr
F9
21:55STL
--:--SEA
1 Stop$137VIEW DEAL
25 May
AA
05:14STL
--:--SEA
1 Stop$180VIEW DEAL
10 Jul
UA
19:23STL
--:--SEA
1 Stop$164VIEW DEAL
St Louis to Seattle monthly flight fare trend
Apr
from USD 137
May
from USD 180
Jun
No flights
Jul
from USD 164
Aug
No flights
Sep
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
