Chicago to St Louis
MDWSTL
Fly from Chicago to St Louis starting at USD 60 with Southwest Airlines.
Best fare available on Sep 8, 2026.
Limited seats. Better plans. Book before it's gone.
Chicago to St Louis cheapest flights this week
Chicago to St Louis monthly flight fare trend
Jul
from USD 246
Aug
from USD 181
Sep
from USD 60
Oct
No flights
Nov
No flights
Dec
No flights
Airport Details
Origin
Chicago
Chicago Midway International Airport (MDW)
Chicago, MDW
Zone
Chicago
Elev
620 ft
Destination
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
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