St Louis to Chicago

STLMDW

Fly from St Louis to Chicago starting at USD 84 with Frontier Airlines.Best fare available on Oct 14, 2026.Limited seats. Better plans. Book before it's gone.

St Louis to Chicago cheapest flights this week

9 Oct
Southwest Airlines
22:00STL
23:10MDW
DirectUSD 278VIEW DEAL
10 Oct
Southwest Airlines
16:40STL
17:45MDW
DirectUSD 257VIEW DEAL
11 Oct
Frontier Airlines
10:35STL
21:58MDW
1 StopUSD 148VIEW DEAL
11 Oct
Southwest Airlines
05:45STL
06:50MDW
DirectUSD 185VIEW DEAL
11 Oct
Southwest Airlines
21:50STL
23:00MDW
DirectUSD 281VIEW DEAL
13 Oct
Southwest Airlines
20:50STL
22:00MDW
DirectUSD 239VIEW DEAL
14 Oct
Frontier Airlines
18:35STL
23:43MDW
1 StopUSD 84VIEW DEAL
15 Oct
Southwest Airlines
18:10STL
19:15MDW
DirectUSD 256VIEW DEAL
16 Oct
Frontier Airlines
18:35STL
23:43MDW
1 StopUSD 193VIEW DEAL
17 Oct
Southwest Airlines
06:05STL
07:10MDW
DirectUSD 256VIEW DEAL

St Louis to Chicago monthly flight fare trend

Oct
from USD 61
Nov
from USD 56
Dec
No flights
Jan
No flights
Feb
No flights
Mar
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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