Portland to St Louis
PDXSTL
Fly from Portland to St Louis starting at USD 144 with AS.
Best fare available on Oct 1, 2026.
Limited seats. Better plans. Book before it's gone.
Portland to St Louis cheapest flights this week
1 Oct
AS
11:15PDX
15:03STL
Direct$144VIEW DEAL
Portland to St Louis monthly flight fare trend
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Oct
from USD 144
Airport Details
Origin
Portland
Portland International Airport (PDX)
Portland, PDX
Zone
Los Angeles
Elev
31 ft
Destination
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
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