Chicago to St Louis

ORDSTL

Fly from Chicago to St Louis starting at USD 50 with United Airlines.Best fare available on Aug 19, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to St Louis cheapest flights this week

27 Jul
United Airlines
07:05ORD
08:39STL
DirectUSD 110VIEW DEAL
11 Aug
American Airlines
23:00ORD
00:14STL
DirectUSD 105VIEW DEAL
16 Aug
American Airlines
07:00ORD
08:24STL
DirectUSD 168VIEW DEAL
19 Aug
United Airlines
20:29ORD
22:00STL
DirectUSD 50VIEW 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 64VIEW 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 110
Aug
from USD 50
Sep
from USD 64
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

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