Chicago to St Louis

MDWSTL

Fly from Chicago to St Louis starting at SAR 492 with Southwest Airlines.Best fare available on Oct 13, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to St Louis cheapest flights this week

6 Oct
Southwest Airlines
10:10MDW
17:45STL
1 StopSAR 625VIEW DEAL
7 Oct
Frontier Airlines
06:25MDW
13:10STL
1 StopSAR 685VIEW DEAL
8 Oct
Southwest Airlines
22:05MDW
23:20STL
DirectSAR 1,058VIEW DEAL
12 Oct
Frontier Airlines
06:15MDW
17:40STL
1 StopSAR 740VIEW DEAL
13 Oct
Southwest Airlines
20:50MDW
22:05STL
DirectSAR 492VIEW DEAL
14 Oct
Frontier Airlines
06:21MDW
17:40STL
1 StopSAR 692VIEW DEAL
15 Oct
Southwest Airlines
11:05MDW
12:15STL
DirectSAR 1,029VIEW DEAL
16 Oct
Southwest Airlines
07:50MDW
09:00STL
DirectSAR 884VIEW DEAL
19 Oct
Frontier Airlines
06:15MDW
17:40STL
1 StopSAR 681VIEW DEAL
26 Oct
Southwest Airlines
22:05MDW
23:20STL
DirectSAR 503VIEW DEAL

Chicago to St Louis monthly flight fare trend

Oct
from SAR 204
Nov
from SAR 326
Dec
from SAR 241
Jan
from SAR 440
Feb
from SAR 440
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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