Chicago to St Louis

ORDSTL

Fly from Chicago to St Louis starting at USD 59 with American Airlines.Best fare available on Oct 3, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to St Louis cheapest flights this week

30 Sept
Frontier Airlines
06:20ORD
13:10STL
1 StopUSD 62VIEW DEAL
1 Oct
United Airlines
21:30ORD
22:59STL
DirectUSD 201VIEW DEAL
2 Oct
American Airlines
08:55ORD
10:18STL
DirectUSD 87VIEW DEAL
2 Oct
Frontier Airlines
06:30ORD
19:17STL
1 StopUSD 196VIEW DEAL
3 Oct
American Airlines
08:50ORD
10:13STL
DirectUSD 59VIEW DEAL
3 Oct
Frontier Airlines
06:30ORD
19:17STL
1 StopUSD 192VIEW DEAL
4 Oct
Frontier Airlines
19:28ORD
13:10STL
1 StopUSD 200VIEW DEAL
6 Oct
American Airlines
15:28ORD
16:53STL
DirectUSD 148VIEW DEAL
7 Oct
Frontier Airlines
06:20ORD
13:10STL
1 StopUSD 185VIEW DEAL
8 Oct
United Airlines
19:50ORD
21:21STL
DirectUSD 247VIEW DEAL

Chicago to St Louis monthly flight fare trend

Sep
from USD 62
Oct
from USD 56
Nov
from USD 86
Dec
from USD 71
Jan
from USD 121
Feb
from USD 121

Airport Details

Origin

Chicago

Chicago O'Hare International Airport (ORD)

Chicago, ORD
Zone

Chicago

Elev

680 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