Chicago to St Louis

MDWSTL

Fly from Chicago to St Louis starting at USD 60 with Southwest Airlines.Best fare available on Sep 11, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to St Louis cheapest flights this week

10 Sept
Southwest Airlines
09:20MDW
10:30STL
DirectUSD 192VIEW DEAL
11 Sept
Southwest Airlines
07:55MDW
09:15STL
DirectUSD 62VIEW DEAL
11 Sept
Southwest Airlines
20:55MDW
22:10STL
DirectUSD 60VIEW DEAL
11 Sept
Frontier Airlines
06:25MDW
13:10STL
1 StopUSD 168VIEW DEAL
13 Sept
Frontier Airlines
18:46MDW
13:10STL
1 StopUSD 142VIEW DEAL
14 Sept
Frontier Airlines
06:25MDW
13:10STL
1 StopUSD 146VIEW DEAL
15 Sept
Southwest Airlines
14:00MDW
15:10STL
DirectUSD 249VIEW DEAL
17 Sept
Southwest Airlines
07:55MDW
09:15STL
DirectUSD 290VIEW DEAL
18 Sept
Frontier Airlines
06:25MDW
13:10STL
1 StopUSD 142VIEW DEAL
19 Sept
Southwest Airlines
18:15MDW
19:35STL
DirectUSD 243VIEW DEAL

Chicago to St Louis monthly flight fare trend

Sep
from USD 60
Oct
from USD 60
Nov
from USD 123
Dec
from USD 65
Jan
No flights
Feb
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

Flights from Chicago

Flights from Chicago to AtlantaFlights from Chicago to AustinFlights from Chicago to BostonFlights from Chicago to CharlotteFlights from Chicago to DenverFlights from Chicago to DallasFlights from Chicago to DetroitFlights from Chicago to NewarkFlights from Chicago to Fort LauderdaleFlights from Chicago to Honolulu