Helping travelers to find the best flight offers
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Chicago to Saint Louis:
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
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Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Chicago to Saint Louis. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Chicago to Saint Louis
Below you will find a list of airlines operating flights on the Chicago — Saint Louis route and the starting prices for flights of each specific airline on it.
A direct flight is the most convenient and comfortable way to fly from Chicago to Saint Louis, despite the fact that sometimes flights with transfers can cost significantly less.
The cheapest one-way flight from Chicago to Saint Louis departs on 09/29/2025, is operated by Southwest Airlines and costs $41
The cheapest roundtrip flight from Chicago to Saint Louis departs on 10/24/2025, is operated by Executive Express Aviation LLC dbaSouthern Airways and costs $88
Fastest flight from Chicago to Saint Louis takes 1h 14m
There are direct flights on this route 5 days a week: Mo, Tu, We, Th, and Fr
The distance between Chicago and Saint Louis is 422km (262 miles). The average flight duration is 1h 24m. There are 116 direct flights from Chicago to Saint Louis. Chicago and Saint Louis are in the same time zone. Flights from Chicago begin at 6:40 AM. The latest flight from Chicago departs at 10:36 PM.
We couldn't find any special offers for flights from Chicago to Saint Louis
Chicago — Saint Louis
08/13/2025
Departure
Direct flight
UA2618
Starting at $283
Chicago — Saint Louis
08/21/2025
Departure
Direct flight
UA4613
Starting at $279
Chicago — Saint Louis
09/24/2025
Departure
Direct flight
UA4185
Starting at $201
Chicago — Saint Louis
09/24/2025
Departure
Direct flight
WN2060
Starting at $50
Chicago — Saint Louis
09/25/2025
Departure
Direct flight
WN3602
Starting at $83
Chicago — Saint Louis
09/29/2025
Departure
Direct flight
UA562
Starting at $169
Chicago — Saint Louis
10/01/2025
Departure
Direct flight
WN3774
Starting at $49
Chicago — Saint Louis
10/17/2025
Departure
Direct flight
UA4185
Starting at $410
Chicago — Saint Louis
08/11/2025
Departure
Direct flight
AA3069
Starting at $365
Chicago — Saint Louis
08/13/2025
Departure
Direct flight
UA1361
Starting at $291
Starting at $169
Starting at $41
Starting at $80
Starting at $43
Starting at $101
Starting at $103
The cheapest flight ticket from Chicago to Saint Louis according to data for the last 48 hours costs $41
Often the best time to buy tickets from Chicago to Saint Louis is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Chicago to Saint Louis can be found flying in these months: September, August, October.
The fastest flights from Chicago to Saint Louis start from 1 hour 14 minutes in the air.
The following airlines operate direct flights on the route Chicago — Saint Louis: United Airlines, Southwest Airlines, American Airlines