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

6 Aug
United Airlines
14:20ORD
15:46STL
DirectUSD 114VIEW DEAL
9 Aug
Frontier Airlines
07:05ORD
17:37STL
1 StopUSD 182VIEW DEAL
10 Aug
United Airlines
22:00ORD
23:29STL
DirectUSD 137VIEW DEAL
11 Aug
American Airlines
23:00ORD
00:14STL
DirectUSD 105VIEW DEAL
13 Aug
United Airlines
20:29ORD
22:00STL
DirectUSD 115VIEW 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
22 Aug
Frontier Airlines
14:41ORD
19:13STL
1 StopUSD 135VIEW DEAL
23 Aug
United Airlines
14:08ORD
15:38STL
DirectUSD 168VIEW DEAL

Chicago to St Louis monthly flight fare trend

Aug
from USD 50
Sep
from USD 59
Oct
No flights
Nov
No flights
Dec
from USD 71
Jan
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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