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

2 Sept
Southwest Airlines
08:15MDW
09:35STL
DirectUSD 252VIEW DEAL
3 Sept
Frontier Airlines
11:50MDW
17:22STL
1 StopUSD 161VIEW DEAL
4 Sept
Frontier Airlines
11:50MDW
17:22STL
1 StopUSD 166VIEW DEAL
6 Sept
Frontier Airlines
06:05MDW
17:22STL
1 StopUSD 138VIEW DEAL
7 Sept
Frontier Airlines
06:05MDW
17:22STL
1 StopUSD 171VIEW DEAL
8 Sept
Southwest Airlines
20:30MDW
21:45STL
DirectUSD 60VIEW DEAL
8 Sept
Southwest Airlines
14:00MDW
15:10STL
DirectUSD 106VIEW DEAL
8 Sept
Southwest Airlines
08:15MDW
09:35STL
DirectUSD 77VIEW DEAL
8 Sept
Southwest Airlines
14:00MDW
15:10STL
DirectUSD 78VIEW DEAL
9 Sept
Southwest Airlines
08:15MDW
09:35STL
DirectUSD 60VIEW DEAL

Chicago to St Louis monthly flight fare trend

Sep
from USD 60
Oct
from USD 52
Nov
from USD 130
Dec
from USD 65
Jan
No flights
Feb
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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