Our cheapest offers for flights from St. Louis to Chicago

Here you can compare cheap flights from St. Louis (STL) to Chicago (CHI) 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 Chicago. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
St. Louis Chicago	Outbound 09/19/25 1 Stopover (BRL) 9X0447, 9X0444 03h 35min	Return 09/29/25 1 Stopover (UIN) 9X0488, 9X0463 03h 35min	Southern Airways Express	?	$182
Best option St. Louis Chicago	Outbound 09/19/25 direct UA1156 01h 25min	Return 09/29/25 direct UA2618 01h 24min	United Airlines	?	$212
St. Louis Chicago	Outbound 09/19/25 1 Stopover (UIN) 9X0460, 9X0481 03h 32min	Return 09/29/25 1 Stopover (UIN) 9X0482, 9X0465 03h 55min	Southern Airways Express		$191
St. Louis Chicago	Outbound 09/19/25 1 Stopover (UIN) 9X0460, 9X0481 03h 32min	Return 09/29/25 direct UA2618 01h 24min	Southern Airways Express	?	$185
St. Louis Chicago	Outbound 09/19/25 1 Stopover (BRL) 9X0447, 9X0442 19h 25min	Return 09/29/25 1 Stopover (UIN) 9X0482, 9X0465 03h 55min	Southern Airways Express	?	$196
St. Louis Chicago	Outbound 09/19/25 1 Stopover (UIN) 9X0460, 9X0481 03h 32min	Return 09/29/25 1 Stopover (UIN) 9X0488, 9X0463 03h 35min	Southern Airways Express		$218
St. Louis Chicago	Outbound 09/19/25 direct AA1997 01h 23min	Return 09/29/25 1 Stopover (UIN) 9X0488, 9X0463 03h 35min	American Airlines	?	$242
St. Louis Chicago	Outbound 07/25/25 1 Stopover (MCO) F92630, F93043 14h 26min	Return 08/17/25 1 Stopover (ATL) F91596, F94473 08h 39min	Frontier Airlines		$244
St. Louis Chicago	Outbound 07/25/25 1 Stopover (MCO) F92630, F93043 14h 26min	Return 08/17/25 1 Stopover (ATL) F91596, F94473 08h 39min	Frontier Airlines		$255
St. Louis Chicago	Outbound 07/25/25 1 Stopover (UIN) 9X0460, 9X0481 03h 32min	Return 08/17/25 1 Stopover (UIN) 9X0482, 9X0465 03h 55min	Southern Airways Express	?	$271

Tips and tricks to help you find cheap flights from St. Louis to Chicago

Important flight information

Flight information: St. Louis - Chicago

Flight duration	min. 01:00 / max. 12:10
Return flight duration	min. 01:05/ max. 08:55
Distance	419 km
Flights per week	199
Departure airport	Airport St. Louis - Lambert International Airport (STL)
Arrival airport	Airport Chicago-IL all Airports (ORD, MDW, RFD) (CHI)
Destination country	Flights to United States

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