A large white building with a dome and a statue in front, surrounded by fountains and trees.

Cheap Flights to St. Louis , MO

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Frequently asked questions

How do I find cheap flights to St. Louis that have flexible change policies?
Search for your bargain flights to St. Louis, then mark the "No change fee" box directly underneath the "Flexible change policies" filter. It really is that easy. We understand that plans change and flexibility is important, so book with confidence with Expedia.
Which airlines fly to St. Louis?
Take your pick of these quality airlines that offer flights to or near St. Louis:
  • American Airlines - 927 flights to or near St. Louis each month, including 927 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • United Airlines - 524 flights to or near St. Louis each month, including 524 flights to Lambert-St. Louis Intl. Airport (STL) per month.
How can I find cheap tickets to St. Louis?
You'll always walk away with an unbeatable deal with Expedia, but our "flexible dates" feature makes it even easier. Enter your preferred travel date, then click on the flexible dates link above to reveal the cheapest prices for nearby days. was the cheapest price for a flight to St. Louis in the last seven days.
How much is a flight to St. Louis?
You could have scored a round-trip ticket to St. Louis from anywhere between and in the last seven days. For one-way journeys taking off from (), the lowest price during this period was just .
What are the most popular airports to fly into in St. Louis?
St. Louis's main entry point is Lambert-St. Louis Intl. Airport (STL). Get your next awesome adventure underway by booking a ticket on one of the 5,604 monthly flights to this destination.
When is the cheapest time to fly to St. Louis?
Fly out on a Tuesday to boost your odds of getting the cheapest deal to St. Louis. Mondays are usually the next most affordable day to take off. Saturday is typically the most expensive day to fly anywhere.
How much is a plane ticket to St. Louis?
In the last seven days, fares to St. Louis ranged between and . Prices usually rise as your travel date nears, so snap up a bargain today.
What months are the cheapest to book a flight to St. Louis?
To bag a bargain flight to St. Louis, try to book during February when the price of tickets are at their cheapest. When's the most expensive time? In the U.S, it's the month of December.
How long is a flight to St. Louis?
Whether or not you'll have time to binge-watch your favorite series depends on where you're jetting off from. To give you a rough idea, here are the average flight times for some busy domestic routes to St. Louis:
  • Denver, CO (DEN-Denver Intl.) to Lambert-St. Louis Intl. Airport (STL) - 2 hours and 1 minute
  • Chicago, IL (ORD-O'Hare Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 24 minutes
  • New York, NY (LGA-LaGuardia) to Lambert-St. Louis Intl. Airport (STL) - 2 hours and 51 minutes
What are the best things to do in St. Louis?
  • With so many wonderful things to see and do in Chesterfield, it's no surprise lots of travelers kick off their St. Louis adventure in this dynamic city. Spend your first day or so touring big attractions like St. Louis Premium Outlets before looking around some of this place's lesser-known gems.
  • Chesterfield is known for its humid subtropical climate. But before you leave, see what the weather will be doing during your visit. Wet, dry, hot or cold, it's smart to come prepared!
  • Make Broken Arrow your next port of call. It's 547 kilometers to the southwest of Chesterfield and home to Bass Pro Shops, one of the destination's best sights.

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Find Your Flights to St. Louis STL

Cheap flights to St. Louis (STL)

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.

We recommend using the ‘Flexible Dates’ calendar at the top of the page to see the price of plane tickets on the surrounding dates. This allows you to pick the cheapest days to fly if your trip allows flexibility and score cheap flight deals to St. Louis.

Roundtrip prices range from - , and one-ways to St. Louis start as low as .

Be aware that choosing a non-stop flight can sometimes be more expensive while saving you time. And routes with connections may be available at a cheaper rate.

Airlines that fly to St. Louis (STL)

You have several options for which airline you choose to travel with to St. Louis. There are airlines flying into STL: . 

Cheap plane tickets may be available from different airlines at different times and with unique terms. It’s best to understand the details of each airline’s offer before judging its value.

For example, if you plan to check a bag or bring a carry-on, check whether the cheap airfare deal includes a baggage allowance. If not, verify whether the baggage fee is higher than the difference of other airline plane ticket deals offering free checked/carry-on baggage in exchange for a slightly higher airfare. 

Find the best deals

At Expedia, we source many flight deals from multiple providers, so you can easily find the best deals that are right for you. A great strategy for getting the best deals can be to make sure you book and travel at the optimal times. Airfare to St. Louis (STL) varies throughout the year based on seasonal demand. You’ll see the lowest rates for roundtrips to STL in and in for one-ways.

Cancellation & flexibility

To change or cancel eligible flights, go to ‘My Trips’ and navigate to your itinerary. If you booked within the last 24-hours, you might be able to cancel your flight for free. Learn more about flight changes or cancellations from our customer service portal. Some plane tickets are available with no change fees, which you can filter for during your search.

Find Your Flights to St. Louis STL

Travel information

Destination airport
St. Louis
Destination airport IATA code
STL