Helping travelers to find the best flight offers
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.
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.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Chicago to Saint Louis:
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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.
The cheapest one-way flight from Chicago to Saint Louis departs on 12/09/2025, is operated by United Airlines and costs $99
The cheapest roundtrip flight from Chicago to Saint Louis departs on 01/06/2026, is operated by American Airlines and costs $94
Fastest flight from Chicago to Saint Louis takes 1h 22m
There are direct flights on this route 2 days a week: Tu and We
The distance between Chicago and Saint Louis is 422km (262 miles). There are 114 direct flights from Chicago to Saint Louis. Chicago and Saint Louis are in the same time zone. Flights from Chicago begin at 6:20 AM. The latest flight from Chicago departs at 10:30 PM
United Airlines
Every day
Starting at $281
Chicago — Saint Louis
12/08/2025
Departure
Direct flight
WN2333
Starting at $386
Chicago — Saint Louis
12/10/2025
Departure
Direct flight
AA4803
Starting at $258
Chicago — Saint Louis
12/16/2025
Departure
Direct flight
AA6332
Starting at $304
Chicago — Saint Louis
03/06/2026
Departure
Direct flight
UA4416
Starting at $267
Starting at $386
Starting at $258
Starting at $99
Starting at $138
More than 4 airlines operate flights from Chicago to Saint Louis, including Southwest Airlines, American Airlines, United Airlines, and Frontier Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $99, and our service lets you instantly compare all options. The variety of offers simplifies planning: you can choose budget fares or more comfortable options with baggage included or extra services. We help you find the best deals so your trip is cost-efficient.
We couldn't find any special offers for flights from Chicago to Saint Louis
The cheapest flight ticket from Chicago to Saint Louis according to data for the last 48 hours costs $99
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: March, December.
The fastest flights from Chicago to Saint Louis start from 1 hour 22 minutes in the air.
The following airlines operate direct flights on the route Chicago — Saint Louis: Southwest Airlines, American Airlines, United Airlines
The cost of a one-way flight from Chicago to Saint Louis ranges from $138 (March 2026) to $334 (December 2025). On average, the ticket price is about $236–$334.