Flights from Chicago to St. Louis

Our cheapest offers for flights from Chicago to St. Louis

Here you can compare cheap flights from Chicago (CHI) 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
St. Louis
Outbound
06/20/25
1 Stopover (BRL)
9X0443, 9X0440
11h 45min
Return
07/19/25
1 Stopover (BRL)
9X0447, 9X0444
03h 35min
Southern Airways Express
$123
Best option
Chicago
St. Louis
Outbound
04/21/25
direct
UA2618
01h 27min
Return
05/19/25
direct
UA1156
01h 21min
United Airlines ?
$248
Chicago
St. Louis
Pay attention to transfer at connecting flight
Outbound
04/12/25
1 Stopover (FLL)
NK0267, NK1320
21h 27min
Return
04/27/25
1 Stopover (FLL)
NK1321, NK0001
15h 13min
Spirit Airlines
$265
found 2 days ago
Chicago
St. Louis
Outbound
06/20/25
1 Stopover (BRL)
9X0443, 9X0440
11h 45min
Return
07/19/25
1 Stopover (BRL)
9X0447, 9X0444
03h 35min
Southern Airways Express
$128
Chicago
St. Louis
Outbound
06/20/25
1 Stopover (BRL)
9X0443, 9X0440
11h 45min
Return
07/19/25
1 Stopover (BRL)
9X0447, 9X0442
19h 25min
Southern Airways Express ?
$131
Chicago
St. Louis
Outbound
06/20/25
1 Stopover (UIN)
9X0482, 9X0465
03h 55min
Return
07/19/25
1 Stopover (BRL)
9X0447, 9X0444
03h 35min
Southern Airways Express ?
$148
Chicago
St. Louis
Outbound
04/21/25
1 Stopover (UIN)
9X0488, 9X0463
03h 35min
Return
05/19/25
1 Stopover (BRL)
9X0447, 9X0444
03h 35min
Southern Airways Express
$153
Chicago
St. Louis
Outbound
04/21/25
1 Stopover (UIN)
9X0488, 9X0463
03h 35min
Return
05/19/25
1 Stopover (BRL)
9X0447, 9X0444
03h 35min
Southern Airways Express
$161
Chicago
St. Louis
Outbound
04/12/25
direct
UA4613
01h 33min
Return
04/27/25
1 Stopover (BRL)
9X0447, 9X0444
03h 35min
United Airlines
$182
found 2 days ago
Chicago
St. Louis
Outbound
04/21/25
direct
AA1926
01h 19min
Return
05/19/25
1 Stopover (BRL)
9X0441, 9X0442
14h 25min
American Airlines ?
$189
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Chicago to St. Louis

Favorite airline: Southern Airways Express
52 % of flights from Chicago to St. Louis are booked with Southern Airways Express.
Southern Airways Express
52 %
United Airlines
22 %
Spirit Airlines
11 %
Direct flights are cheaper
On this route, direct flights are $77.00 cheaper than flights with a stopover.
non stop flight
1 stop
01h 27min
19h 20min
$86
$163
Favourite connection: via Quincy
Stopover flights on this route are especially popular via Quincy, making up 51 % of bookings.
Route
bookings
1 stopover Quincy, IL
11h 15min, from $169
51 %
Direct flights
01h 27min, from $86
29 %
1 stopover Fort Lauderdale-Hollywood International Airport, FL
11h 42min, from $264
8 %

Important flight information

Flight information: Chicago - St. Louis

Roundtrip from $122.63
Flight duration min. 01:05 / max. 08:55
Return flight duration min. 01:00/ max. 12:10
Distance 419 km
Flights per week 203
Departure airport Airport Chicago-IL all Airports (ORD, MDW, RFD) (CHI)
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