Flights from Chicago O'Hare to St. Louis

Our cheapest offers for flights from Chicago O'Hare to St. Louis

Here you can compare cheap flights from Chicago O'Hare (ORD) to St. Louis (STL) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to St. Louis. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Chicago O'Hare
St. Louis
Outbound
09/25/25
direct
AA2514
01h 14min
Return
10/05/25
1 Stopover (UIN)
9X0464, 9X0485
03h 24min
American Airlines ?
$140
Best option
Chicago O'Hare
St. Louis
Outbound
11/09/25
direct
UA2618
01h 26min
Return
12/07/25
direct
UA1641
01h 23min
United Airlines ?
$192
Chicago O'Hare
St. Louis
Outbound
09/25/25
1 Stopover (UIN)
9X0482, 9X0465
03h 45min
Return
10/05/25
1 Stopover (UIN)
9X0464, 9X0485
03h 24min
Southern Airways Express
$182
Chicago O'Hare
St. Louis
Pay attention to transfer at connecting flight
Outbound
11/09/25
2 Stopovers (BNA, JBR)
NK0416, 9X0459, 9X0454
26h 35min
Return
12/07/25
1 Stopover (FLL)
NK2158, NK1986
21h 03min
Spirit Airlines, Southern Airways Express
$281
Chicago O'Hare
St. Louis
Outbound
09/25/25
1 Stopover (ATL)
F91596, F94473
09h 54min
Return
10/05/25
1 Stopover (DEN)
F94567, F93172
28h 04min
Frontier Airlines ?
$153
Chicago O'Hare
St. Louis
Outbound
09/25/25
1 Stopover (ATL)
F91596, F94473
09h 54min
Return
10/05/25
1 Stopover (DEN)
F94567, F93174
13h 42min
Frontier Airlines
$154
Chicago O'Hare
St. Louis
Outbound
09/25/25
1 Stopover (UIN)
9X0482, 9X0465
03h 45min
Return
10/05/25
1 Stopover (UIN)
9X0464, 9X0485
03h 24min
Southern Airways Express ?
$167
Chicago O'Hare
St. Louis
Outbound
09/25/25
1 Stopover (ATL)
F91596, F94473
09h 54min
Return
10/05/25
1 Stopover (UIN)
9X0464, 9X0485
03h 24min
Frontier Airlines
$179
Chicago O'Hare
St. Louis
Outbound
09/25/25
1 Stopover (UIN)
9X0482, 9X0465
03h 45min
Return
10/05/25
1 Stopover (UIN)
9X0464, 9X0485
03h 24min
Southern Airways Express
$195
Chicago O'Hare
St. Louis
Outbound
11/09/25
direct
UA4416
01h 34min
Return
12/07/25
direct
UA3598
01h 30min
United Airlines
$201
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: Chicago O'Hare - St. Louis

Roundtrip from $ 139,42
Distance 416 km
Departure airport Airport Chicago O'Hare International Airport, IL (ORD)
Arrival airport Airport St. Louis - Lambert International Airport (STL)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to St. Louis
Flight destinations with a similar price
Flight destinations with a similar price