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	Baggage	Price
Chicago O'Hare St. Louis	Outbound 10/10/25 1 Stopover (UIN) 9X0488, 9X0467 19h 40min	Return 11/04/25 1 Stopover (UIN) 9X0460, 9X0489 18h 37min	Southern Airways Express	?	$172
Best option Chicago O'Hare St. Louis	Outbound 10/10/25 direct AA4282 01h 34min	Return 11/04/25 direct AA3461 01h 21min	American Airlines	?	$287
Chicago O'Hare St. Louis	Outbound 10/10/25 direct AA4282 01h 34min	Return 11/04/25 direct AA6308 01h 21min	American Airlines	?	$296
Chicago O'Hare St. Louis	Outbound 10/10/25 1 Stopover (UIN) 9X0488, 9X0463 03h 35min	Return 11/04/25 direct AA3580 01h 20min	Southern Airways Express	?	$300
Chicago O'Hare St. Louis	Outbound 10/10/25 direct UA2618 01h 24min	Return 11/04/25 direct UA1761 01h 28min	United Airlines	?	$805

Important flight information

Flight information: Chicago O'Hare - St. Louis

Roundtrip from	US$171.75
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