Seattle to St Louis
SEASTL
Fly from Seattle to St Louis starting at USD 110 with American Airlines.
Best fare available on Nov 10, 2026.
Limited seats. Better plans. Book before it's gone.
Seattle to St Louis cheapest flights this week
Seattle to St Louis monthly flight fare trend
Sep
No flights
Oct
from USD 210
Nov
from USD 110
Dec
No flights
Jan
No flights
Feb
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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