
Popular airlines to St. Louis
- Delta
Delta
- American Airlines
American Airlines
- United
United
- Southwest Airlines
Southwest Airlines
- Frontier Airlines
Frontier Airlines
- Alaska Airlines
Alaska Airlines
- Spirit Airlines
Spirit Airlines
How much is the cheapest flight to St. Louis?
Prices were available within the past 7 days and start at $44 for one-way flights and $53 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.





Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL)
September is typically the cheapest month to fly
Graph displaying average flight prices per month
Tips to find the cheapest flights to St. Louis
The cheapest day to fly
Get started finding a cheap flight to St. Louis on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.
The cheapest month to fly
October is the cheapest month to fly to St. Louis. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to St. Louis. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.
The most affordable time to book a flight
Typically, a Sunday can be the cheapest time to book a flight to St. Louis, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.
The cheapest round-trip tickets to St. Louis
The lowest price for round-trip flights to St. Louis in 2025 starts from from $53, while one-way tickets start from from $44. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to St. Louis. If you have a preferred departure time or airline, you can use the handy filters to customize your search.
The cheapest airlines flying to St. Louis
Frontier Airlines, Spirit Airlines, Southwest Airlines, American Airlines, United, Hawaiian Airlines are just some of the airlines that can typically offer cheap tickets to St. Louis. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to St. Louis and countless more destinations worldwide.
The most affordable airports to fly into
To view the cheapest airports to fly into for St. Louis, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to St. Louis. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.
Save with a package
With Expedia's amazing package deals, you could save hundreds of dollars by booking your St. Louis plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.
Date flexibility for the cheapest flights to St. Louis
If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to St. Louis.
Stopover savings
The cheapest tickets to St. Louis are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to St. Louis. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.
Get Expedia's Price Drop Protection
Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to St. Louis for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.
*Terms apply.
Use our Price Tracking feature
Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to St. Louis. Simply download the free Expedia app to your smart device and activate St. Louis flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.
Book with Expedia
As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to St. Louis. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
Frequently asked questions
Destination airport | Lambert-St. Louis Intl. |
Destination airport IATA code | STL |
Destination city name | St. Louis |
Roundtrip price | $52 |
Get up to 100% off your flight to St. Louis when booking a Flight + Hotel
Trending flights to St. Louis
Prices were available within the past 7 days and start at $44 for one-way flights and $53 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Explore a world of travel with Expedia
Lodging
- Hotels near Downtown St. Louis
- Hotels near Busch Stadium
- Hotels near Enterprise Center
- Hotels near St. Louis Union Station
- Hotels near St. Louis Aquarium at Union Station
- Hotels near St. Louis Union Station Mini Golf
- Hotels near Downtown West
- Hotels near The St. Louis Wheel
- Hotels near Meeting of the Waters Fountain
- Hotels near St. Louis Gateway Station
- Hotels near Centenary United Methodist Church
- Hotels near Peabody Opera House
- B&B in St. Louis Gateway Station
- Motels in St. Louis Gateway Station
- Hotels near Campbell House Museum
- Hotels near City Museum
- Hotels near Soldiers Memorial Museum
- Hotels near Citygarden
- Hotels near Lucas Garden Park
- Hotels near Christ Church Cathedral
- Hotels near Washington Avenue Historic District
- Hotels near Dome at America’s Center
- Hotels near America's Center Convention Complex
- Hotels near Flamingo Bowl
- Hotels near Old Post Office
- Hotels near Gateway Arch
- Hotels near 8th and Pine Station
- Hotels near Peabody Darst Webbe
- Hotels with Suites in Downtown St. Louis
- Hotels near Wainwright Building
- Hotels near Lafayette Square
- Hotels near Cardinals Hall of Fame and Museum
- Cheap Hotels in Downtown St. Louis
- Hotels near Kiener Plaza
- Hotels near LaSalle Park
- Hotels with an Outdoor Pool in Downtown St. Louis
- Hotels with Balconies in Downtown St. Louis
- Hotels with Free Parking in Downtown St. Louis
- Wyndham Hotels in Downtown St. Louis
- Hotels near National Blues Museum
- Hotels with Free Breakfast in Downtown St. Louis
- Hotels near Convention Center Station
- Casino Hotels in Downtown St. Louis
- Villas in Convention Center Station
- Hotels near Old Courthouse
- 4 Star Hotels in Downtown St. Louis
- Historic Hotels in Downtown St. Louis
- Hotels near Eugene Field House & St. Louis Toy Museum
- Hotels with an Indoor Pool in Downtown St. Louis
- Hotels with Restaurants in Downtown St. Louis
- Hotels near Shrine of St. Joseph
- Luxury Hotels in Downtown St. Louis
- Omni Hotels in Downtown St. Louis
- Resorts & Hotels with Spas in Downtown St. Louis
- Hotels with Connecting Rooms in Downtown St. Louis
- Boutique Hotels in Downtown St. Louis
- Best Western Hotels in Downtown St. Louis
- Adults Only Resorts & in Downtown St. Louis
- Pet-friendly Hotels in Downtown St. Louis
Packages
- St. Louis Aquarium at Union Station
- St. Louis Union Station Mini Golf
- St. Louis Union Station
- Visit Downtown West
- Meeting of the Waters Fountain
- Enterprise Center
- Peabody Opera House
- Campbell House Museum
- City Museum
- St. Louis City Hall
- Citygarden
- Central Public Library
- Christ Church Cathedral
- Washington Avenue Historic District
- Old Post Office
- Scott Joplin House State Historic Site
- Busch Stadium
- Visit Downtown St. Louis
- Visit Lafayette Square
- Wainwright Building
- America's Center Convention Complex
- Cardinals Hall of Fame and Museum
- Kiener Plaza
- Old Courthouse
- National Blues Museum
- Gateway Arch
- Gateway Arch National Park
- Eugene Field House & St. Louis Toy Museum
Cars
- Car rentals near St. Louis Union Station
- Compact Car Rentals near St. Louis Union Station
- Car rentals near Enterprise Center
- Car rentals near Busch Stadium
- Car rentals near Lafayette Square
- Car rentals near Kiener Plaza
- Car rentals near America's Center Convention Complex
- Hertz Rental Cars in Downtown St. Louis
- Car rentals near Downtown St. Louis
- Budget Rental Cars in Downtown St. Louis
- Enterprise Rental Cars in Downtown St. Louis
- Alamo Rent A Car Rental Cars in Downtown St. Louis
- Avis Rental Cars in Downtown St. Louis