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

9 Aug
Southwest Airlines
06:00STL
07:05MDW
DirectUSD 291VIEW DEAL
9 Aug
Southwest Airlines
15:30STL
16:35MDW
DirectUSD 293VIEW DEAL
16 Aug
Southwest Airlines
19:30STL
20:35MDW
DirectUSD 288VIEW DEAL
16 Aug
Frontier Airlines
16:09STL
10:55MDW
2 StopUSD 194VIEW DEAL
17 Aug
Southwest Airlines
20:50STL
21:55MDW
DirectUSD 103VIEW DEAL
18 Aug
Frontier Airlines
18:45STL
10:55MDW
2 StopUSD 208VIEW DEAL
20 Aug
Southwest Airlines
06:05STL
07:10MDW
DirectUSD 51VIEW DEAL
20 Aug
Southwest Airlines
18:15STL
19:20MDW
DirectUSD 62VIEW DEAL
20 Aug
Southwest Airlines
11:05STL
12:15MDW
DirectUSD 247VIEW DEAL
21 Aug
Frontier Airlines
18:17STL
10:50MDW
1 StopUSD 125VIEW DEAL

St Louis to Chicago monthly flight fare trend

Aug
from USD 51
Sep
from USD 62
Oct
from USD 81
Nov
from USD 80
Dec
No flights
Jan
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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