St Louis to Chicago

STLMDW

Fly from St Louis to Chicago starting at USD 51 with Southwest Airlines.Best fare available on Aug 20, 2026.Limited seats. Better plans. Book before it's gone.

St Louis to Chicago cheapest flights this week

22 Jul
Frontier Airlines
16:57STL
22:03MDW
1 StopUSD 183VIEW DEAL
22 Jul
Southwest Airlines
17:55STL
19:05MDW
DirectUSD 258VIEW DEAL
25 Jul
Frontier Airlines
16:57STL
22:03MDW
1 StopUSD 179VIEW DEAL
26 Jul
Frontier Airlines
18:34STL
11:07MDW
1 StopUSD 232VIEW DEAL
17 Aug
Southwest Airlines
20:50STL
21:55MDW
DirectUSD 103VIEW DEAL
20 Aug
Southwest Airlines
06:05STL
07:10MDW
DirectUSD 51VIEW DEAL
21 Aug
Frontier Airlines
18:17STL
10:50MDW
1 StopUSD 125VIEW DEAL
27 Aug
Frontier Airlines
18:17STL
10:55MDW
1 StopUSD 90VIEW DEAL
30 Aug
Frontier Airlines
18:17STL
10:55MDW
1 StopUSD 123VIEW DEAL
12 Sept
Southwest Airlines
05:45STL
06:50MDW
DirectUSD 104VIEW DEAL

St Louis to Chicago monthly flight fare trend

Jul
from USD 179
Aug
from USD 51
Sep
from USD 51
Oct
No flights
Nov
from USD 203
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

Flights from St Louis

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