Flights from Chicago (MDW) to St. Louis (STL)

Set your sights on the Gateway to the West with Southwest Airlines®. Whether you’re traveling for business, pleasure, or something in between, Southwest® has a variety of flights from Chicago Midway International Airport to Lambert-St. Louis International Airport. Search for your flight to St. Louis with Southwest and book with confidence. If your upcoming trip can be a little flexible, find flights with our Low Fare Calendar and get the lowest fares available. See all that Southwest Vacations® has to offer for special package deals on flights, hotels, rental cars, and more.

Discover all our flights and book your trip to St. Louis now!

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Chicago (Midway), IL to St. Louis, MO

departing on 12/17

one-way starting at*

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*Restrictions and exclusions apply. Seats and dates are limited. Select markets. 43 travel days available.

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Travel Advisory

During the ongoing COVID-19 pandemic, the availability, health and safety procedures, operations, and schedules for local attractions are changing constantly. Please contact attractions directly for hours of operation, potential temperature screenings, and other possible health and safety procedures and restrictions. Visit our Coronavirus Travel Information page for information about potential restrictions on air travel.

Flight details

Average flight time: 1 hour 12 minutes

Departing from: Chicago Midway International Airport (MDW)

Arriving at: Lambert-St. Louis International Airport (STL)


Route information


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Based on DOT published scheduled average flights Monday-Friday between 10/30/2020 and 12/31/2020, as of 11/2/2020.

Explore St. Louis

There might be nothing more famous in St. Louis than the arch on the Mississippi. Officially known as the Gateway Arch, it was built in the 1960s and stands at 630 feet tall. The arch helps to honor Lewis and Clark’s 19th-century explorations as well as the expansion to the West. Visit the Museum at the Gateway Arch, a National Park landmark, and learn about the Louisiana Purchase, the Dred Scott case, and more.

You may be coming from the home of deep dish pizza, but did you know that St. Louis is known for its own style of pizza? Its sauce features more oregano than other types of pizza, and the pizza is frequently made with Provel cheese, a type of processed cheese that combines provolone, Swiss, and white cheddar. With a thin, cracker-like crust, Provel cheese, and square slices, you may find yourself flying back to St. Louis more frequently thanks to this unique style of pizza.

After you fill up on pizza, discover Forest Park, a public park in western St. Louis. The park opened in 1876. It is known as the Heart of St. Louis, and with good reason: Forest Park features the St. Louis Zoo, the Saint Louis Art Museum, the Missouri History Museum, and the St. Louis Science Center, among other great landmarks. If your trip allows it, spend a few days exploring the park and all the great amenities it has to offer.

Travel tips


Infancy policy

One child over 14 days and under two (2) years of age, not occupying a seat, may be carried free of charge when traveling with an adult (12 years of age or older). Learn more.


Pet policy

Customers flying with a pet are subject to a pet fare. To learn more about traveling with your furry friend, explore the Southwest® pet policy.


Unaccompanied minor

Minors under the age of 18 are not permitted to fly unaccompanied on international flights or any itinerary that includes an international flight. Learn more.


Bags fly free®1

Start packing! Every ticketed Customer’s first two checked bags are free. Learn more.


The Southwest travel experience

When you are traveling from Chicago (Midway) to St. Louis, Southwest understands that a great trip means more than just affordable fare between Chicago Midway International Airport and Lambert-St. Louis International Airport. That’s why our variety of services, from booking to boarding, make your travel experience as smooth as possible. Find out more about the Southwest® Experience before you book your Chicago (Midway) to St. Louis flight.

It will be a pleasure to fly with Southwest, no matter which of our destinations you choose. And when you search for your next flight to St. Louis, you know you won’t experience hidden fees—we offer low fares and, as always, bags fly free. That’s our Transfarency® promise. Enroll in our Click 'N Save® emails and stay in the know about our latest flight deals. Looking for tours, activities, and more great delights? Check out Southwest Airlines® Experiences and earn Rapid Rewards® points when you fly.

1First and second checked bags. Weight and size limits apply.

2Fare difference may apply.

Questions we hear the most

How long is the flight from Chicago (Midway) to St. Louis?

The average flight time from Chicago (Midway) to St. Louis is 1 hour 12 minutes.

How many Southwest flights from Chicago (Midway) to St. Louis occur daily?

There are 13 flights daily from Chicago (Midway) to St. Louis on Southwest Airlines.

Does Southwest fly nonstop from Chicago (Midway) to St. Louis?

Southwest flies nonstop from Chicago (Midway) to St. Louis 3 times daily.

What day is it cheapest to fly from Chicago (Midway) to St. Louis?

To find the cheapest day and time to fly Chicago (Midway) to St. Louis with Southwest, check out our Low Fare Calendar.

Can I rent a car at Lambert-St. Louis International Airport?

You can rent a car at Lambert-St. Louis International Airport—book yours with your flight.

Can I change my flight reservation for my flight from Chicago (Midway) to St. Louis?

Yes! Flights from Chicago (Midway) to St. Louis—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.

Where can I find the status of my flight from Chicago (Midway) to St. Louis?

Check the status of your upcoming Southwest flight here.

Where can I find answers to other questions about flying from Chicago (Midway) to St. Louis with Southwest?

Check out the Southwest Airlines® FAQs for answers about everything Southwest.