United Airlines
Every day
starting at $284
Compare airlines, prices, and flight durations for your trip
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 easiest way to get to your destination. The following airlines operate non-stop flights from Chicago to Saint Louis:
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Answers to questions about the route that travelers are most interested in.
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.
United Airlines
Every day
starting at $284
A non-stop 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.
Chicago — Saint Louis
01/31/2026
Departure
Direct flight
UA4516
starting at $106
Chicago — Saint Louis
02/05/2026
Departure
Direct flight
AA3742
starting at $114
Chicago — Saint Louis
02/05/2026
Departure
Direct flight
UA4516
starting at $127
Chicago — Saint Louis
02/07/2026
Departure
Direct flight
AA6356
starting at $145
Chicago — Saint Louis
02/08/2026
Departure
Direct flight
WN2770
starting at $339
Chicago — Saint Louis
02/09/2026
Departure
Direct flight
AA3764
starting at $305
Chicago — Saint Louis
02/11/2026
Departure
Direct flight
AA3376
starting at $306
Chicago — Saint Louis
02/13/2026
Departure
Direct flight
UA2005
starting at $302
Chicago — Saint Louis
02/25/2026
Departure
Direct flight
3L3667
starting at $168
Chicago — Saint Louis
07/06/2026
Departure
Direct flight
UA4472
starting at $174
starting at $99
starting at $114
starting at $48
starting at $168
starting at $69
starting at $137
More than 6 airlines operate flights from Chicago to Saint Louis, including United Airlines, American Airlines, Southwest Airlines, Air Arabia Abu Dhabi, Frontier Airlines, and Spirit Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $48, 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.
The cheapest one-way flight from Chicago to Saint Louis departs on 02/25/2026, is operated by Southwest Airlines and costs $48
The cheapest roundtrip flight from Chicago to Saint Louis departs on 03/11/2026, is operated by United Airlines and costs $90
Fastest flight from Chicago to Saint Louis takes 1h 10m
There are direct flights on this route 7 days a week: Su, Mo, Tu, We, Th, Fr, and Sa
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
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 $48
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: February, January, July.
The fastest flights from Chicago to Saint Louis start from 1 hour 10 minutes in the air.
The following airlines operate direct flights on the route Chicago — Saint Louis: United Airlines, American Airlines, Southwest Airlines
The cost of a one-way flight from Chicago to Saint Louis ranges from $69 (February 2026) to $152 (July 2026). On average, the ticket price is about $109–$258.
