Chicago to St Louis

ORDSTL

Fly from Chicago to St Louis starting at USD 63 with American Airlines.Best fare available on Sep 8, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to St Louis cheapest flights this week

11 Jul
Frontier Airlines
09:28ORD
14:56STL
1 StopUSD 186VIEW DEAL
11 Jul
United Airlines
17:55ORD
19:23STL
DirectUSD 140VIEW DEAL
11 Jul
United Airlines
16:45ORD
18:13STL
DirectUSD 133VIEW DEAL
22 Jul
Frontier Airlines
21:57ORD
19:23STL
1 StopUSD 150VIEW DEAL
22 Aug
United Airlines
18:00ORD
19:31STL
DirectUSD 168VIEW DEAL
23 Aug
United Airlines
14:08ORD
15:38STL
DirectUSD 168VIEW DEAL
27 Aug
Frontier Airlines
13:59ORD
17:22STL
1 StopUSD 90VIEW DEAL
8 Sept
American Airlines
23:00ORD
00:14STL
DirectUSD 63VIEW DEAL
8 Sept
Frontier Airlines
07:05ORD
09:40STL
1 StopUSD 92VIEW DEAL
1 Feb
American Airlines
19:45ORD
21:10STL
DirectUSD 182VIEW DEAL

Chicago to St Louis monthly flight fare trend

Jul
from USD 133
Aug
from USD 90
Sep
from USD 63
Oct
No flights
Nov
No flights
Dec
No flights

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