Chicago to St Louis

MDWSTL

Fly from Chicago to St Louis starting at USD 87 with Frontier Airlines.Best fare available on Oct 28, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to St Louis cheapest flights this week

12 Oct
Frontier Airlines
06:15MDW
17:40STL
1 StopUSD 200VIEW DEAL
13 Oct
Southwest Airlines
20:50MDW
22:05STL
DirectUSD 133VIEW DEAL
14 Oct
Frontier Airlines
06:21MDW
17:40STL
1 StopUSD 187VIEW DEAL
15 Oct
Southwest Airlines
11:05MDW
12:15STL
DirectUSD 278VIEW DEAL
16 Oct
Southwest Airlines
07:50MDW
09:00STL
DirectUSD 239VIEW DEAL
19 Oct
Frontier Airlines
06:15MDW
17:40STL
1 StopUSD 195VIEW DEAL
20 Oct
Southwest Airlines
16:30MDW
17:40STL
DirectUSD 255VIEW DEAL
26 Oct
Southwest Airlines
22:05MDW
23:20STL
DirectUSD 136VIEW DEAL
28 Oct
Frontier Airlines
06:16MDW
17:40STL
1 StopUSD 87VIEW DEAL
28 Oct
Southwest Airlines
09:40MDW
10:50STL
DirectUSD 127VIEW DEAL

Chicago to St Louis monthly flight fare trend

Oct
from USD 55
Nov
from USD 88
Dec
from USD 65
Jan
from USD 119
Feb
from USD 119
Mar
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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