St Louis to Chicago

STLMDW

Fly from St Louis to Chicago starting at USD 100 with Southwest Airlines.Best fare available on Sep 24, 2026.Limited seats. Better plans. Book before it's gone.

St Louis to Chicago cheapest flights this week

1 Jul
Southwest Airlines
11:20STL
12:25MDW
DirectUSD 251VIEW DEAL
3 Jul
Southwest Airlines
21:45STL
06:55MDW
1 StopUSD 154VIEW DEAL
9 Jul
Southwest Airlines
08:55STL
10:00MDW
DirectUSD 276VIEW DEAL
24 Sept
Southwest Airlines
14:20STL
15:25MDW
DirectUSD 100VIEW DEAL
24 Sept
Southwest Airlines
06:05STL
07:10MDW
DirectUSD 101VIEW DEAL
27 Sept
Frontier Airlines
10:35STL
10:58MDW
1 StopUSD 138VIEW DEAL

St Louis to Chicago monthly flight fare trend

Jul
from USD 154
Aug
No flights
Sep
from USD 100
Oct
No flights
Nov
No flights
Dec
No flights

Airport Details

Origin

St Louis

St. Louis Lambert International Airport (STL)

St Louis, STL
Zone

Chicago

Elev

618 ft

Destination

Chicago

Chicago Midway International Airport (MDW)

Chicago, MDW
Zone

Chicago

Elev

620 ft

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