Chicago to St Louis

MDWSTL

Fly from Chicago to St Louis starting at USD 60 with Southwest Airlines.Best fare available on Sep 30, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to St Louis cheapest flights this week

30 Sept
Southwest Airlines
10:10MDW
11:20STL
DirectUSD 60VIEW DEAL
1 Oct
Southwest Airlines
14:45MDW
15:55STL
DirectUSD 283VIEW DEAL
2 Oct
Southwest Airlines
22:05MDW
23:15STL
DirectUSD 89VIEW DEAL
2 Oct
Frontier Airlines
06:25MDW
13:10STL
1 StopUSD 191VIEW DEAL
3 Oct
Southwest Airlines
19:10MDW
20:20STL
DirectUSD 258VIEW DEAL
4 Oct
Frontier Airlines
06:25MDW
13:10STL
1 StopUSD 184VIEW DEAL
6 Oct
Southwest Airlines
10:10MDW
17:45STL
1 StopUSD 169VIEW DEAL
7 Oct
Frontier Airlines
06:25MDW
13:10STL
1 StopUSD 185VIEW DEAL
8 Oct
Southwest Airlines
22:05MDW
23:20STL
DirectUSD 286VIEW DEAL
13 Oct
Southwest Airlines
20:50MDW
22:05STL
DirectUSD 133VIEW DEAL

Chicago to St Louis monthly flight fare trend

Sep
from USD 60
Oct
from USD 55
Nov
from USD 88
Dec
from USD 65
Jan
from USD 119
Feb
from USD 119

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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