Popular airlines from Chicago to St. Louis, MO (STL-Lambert-St. Louis Intl.)
DeltaDelta
Southern AirwaysSouthern Airways
Southwest AirlinesSouthwest Airlines
American AirlinesAmerican Airlines
UnitedUnited
Frontier AirlinesFrontier Airlines
Alaska AirlinesAlaska Airlines
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Cheap Flights from Chicago (CHI) to St. Louis (STL)
Prices were available within the past 7 days and start at £66 for one-way flights and £91 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Find the cheapest month to fly from Chicago (CHI) to St. Louis (STL)
September is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | O'Hare Intl. |
Destination airport | Lambert-St. Louis Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Southern Airways Express, United |
Return price | £90 |
Distance | 413 km |
Compare flights from Chicago to St. Louis easily and book with confidence
For travelling on business or for pleasure, Expedia makes it easy to book your flights from Chicago to St. Louis. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Lambert-St. Louis Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from CHI-All Airports to Lambert-St. Louis Intl..
To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.
Grab a great deal on your flight from CHI-All Airports (CHI) to Lambert-St. Louis Intl. (STL)
The easiest way to view the best deals on flights from Chicago to St. Louis today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from CHI-All Airports to Lambert-St. Louis Intl. start at just £91 and range up to £314.
To find an even better deal, try
- being flexible on your dates – midweek flights can be cheaper
- looking for other airports near Chicago and St. Louis
- booking your flight during September, the cheapest month on this route
- varying your flight times – early morning and late at night are sometimes cheaper
Why you should book your Chicago to St. Louis flight with Expedia!
We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from CHI-All Airports to Lambert-St. Louis Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.
Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.
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