Chicago to St Louis

MDWSTL

Fly from Chicago to St Louis starting at USD 50 with Southwest Airlines.Best fare available on Aug 19, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to St Louis cheapest flights this week

19 Aug
Southwest Airlines
08:15MDW
09:35STL
DirectUSD 50VIEW DEAL
20 Aug
Frontier Airlines
11:50MDW
17:22STL
1 StopUSD 180VIEW DEAL
22 Aug
Southwest Airlines
09:55MDW
11:05STL
DirectUSD 181VIEW DEAL
22 Aug
Southwest Airlines
06:35MDW
07:45STL
DirectUSD 241VIEW DEAL
24 Aug
Frontier Airlines
06:05MDW
17:22STL
1 StopUSD 182VIEW DEAL
25 Aug
Southwest Airlines
20:30MDW
21:40STL
DirectUSD 253VIEW DEAL
26 Aug
Southwest Airlines
14:00MDW
15:10STL
DirectUSD 254VIEW DEAL
27 Aug
Frontier Airlines
06:05MDW
17:22STL
1 StopUSD 90VIEW DEAL
27 Aug
Southwest Airlines
20:55MDW
22:05STL
DirectUSD 60VIEW DEAL
28 Aug
Frontier Airlines
11:50MDW
17:22STL
1 StopUSD 177VIEW DEAL

Chicago to St Louis monthly flight fare trend

Aug
from USD 50
Sep
from USD 60
Oct
No flights
Nov
No flights
Dec
from USD 65
Jan
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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