Portland to St Louis
PDXSTL
Fly from Portland to St Louis starting at USD 144 with Alaska Airlines.
Best fare available on Oct 1, 2026.
Limited seats. Better plans. Book before it's gone.
Portland to St Louis cheapest flights this week
Portland to St Louis monthly flight fare trend
Jul
from USD 219
Aug
No flights
Sep
No flights
Oct
from USD 144
Nov
No flights
Dec
No flights
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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