STL

$37 Find Cheap Flights to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis
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Cheap Flights to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals to St. Louis

KAYAK's recommended round-trip deals from the most popular airlines that fly to St. Louis.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Frontier Logo
6:50 am - 9:59 amDEN-STL
2h 09mnonstop
Frontier Logo
8:15 pm - 9:48 pmSTL-DEN
2h 33mnonstop
$85Frontier
Find Deal
Wed, May 7 - Sat, May 10
Frontier Logo
6:55 am - 10:01 amDEN-STL
2h 06mnonstop
Frontier Logo
6:58 pm - 8:29 pmSTL-DEN
2h 31mnonstop
$96Frontier
Find Deal
Wed, Apr 23 - Wed, Apr 30
United Airlines Logo
10:50 am - 2:42 pmBWI-STL
4h 52m1 stop
United Airlines Logo
8:00 am - 2:16 pmSTL-BWI
5h 16m1 stop
$181United Airlines
Find Deal
Tue, Apr 29 - Tue, May 6
Delta Logo
5:30 am - 1:28 pmSEA-STL
5h 58m1 stop
Delta Logo
5:00 pm - 12:02 amSTL-SEA
9h 02m1 stop
$189Delta
Find Deal
Tue, Apr 22 - Tue, Apr 29
United Airlines Logo
8:40 am - 9:56 amIAD-STL
2h 16mnonstop
United Airlines Logo
5:27 pm - 12:30 amSTL-IAD
6h 03m1 stop
$189United Airlines
Find Deal
Sun, May 25 - Fri, May 30
American Airlines Logo
7:20 am - 2:53 pmDEN-STL
6h 33m1 stop
American Airlines Logo
5:27 pm - 9:58 pmSTL-DEN
5h 31m1 stop
$193American Airlines
Find Deal
Sat, May 3 - Sat, May 3
Southwest Logo
1:15 pm - 4:15 pmDEN-STL
2h 00mnonstop
Southwest Logo
5:55 pm - 7:20 pmSTL-DEN
2h 25mnonstop
$196Southwest
Find Deal
Tue, Apr 29 - Tue, May 6
Delta Logo
6:00 am - 5:00 pmSEA-STL
9h 00m1 stop
Delta Logo
7:19 pm - 11:59 pmSTL-SEA
6h 40m1 stop
$197Delta
Find Deal
Tue, Jun 3 - Wed, Jun 4
Southwest Logo
10:25 am - 1:30 pmDEN-STL
2h 05mnonstop
Southwest Logo
6:55 pm - 8:15 pmSTL-DEN
2h 20mnonstop
$197Southwest
Find Deal
Tue, May 6 - Fri, May 9
American Airlines Logo
1:45 pm - 9:52 pmDEN-STL
7h 07m1 stop
American Airlines Logo
3:58 pm - 9:56 pmSTL-DEN
6h 58m1 stop
$199American Airlines
Find Deal
Wed, May 7 - Sat, May 10

KAYAK's insights & trends for flights to St. Louis

Get data-powered insights and trends for flights to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to St. Louis?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.
In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Denver, at $85 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $183 in the last 3 days.

How much is a flight to St. Louis?

The average and cheapest price for all round-trip flights to St. Louis from each origin found by users searching on KAYAK in the last month.
A flight to St. Louis costs $291 on average. The cheapest price found on KAYAK in the last 2 weeks cost $34 and departed from Quincy. The most popular routes on KAYAK are New York to St. Louis which costs $292 on average, and Washington, D.C. to St. Louis, which costs $352 on average.
See prices from:

What is the cheapest day to fly to St. Louis?

The average price of all round-trip flights to St. Louis clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to St. Louis is Thursday where round-trip tickets can be as cheap as $347. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $425 on average.

What is the cheapest month to fly to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights to St. Louis is January, where tickets cost $300 on average for return flights. On the other hand, the most expensive months are December and November, where the average cost of tickets from the United States is $424 and $373 respectively. For one-way flights, the best month to travel is August with an average price of $341.

What is the cheapest time of day to fly to St. Louis?

The average price for all round-trip flights to St. Louis depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to St. Louis is generally in the evening, when round-trip flights cost $358 on average. The most expensive time of day to fly to St. Louis is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $407.

What is a good deal for flights to St. Louis?

If you’re looking for cheap airfare to St. Louis, 25% of our users found tickets to St. Louis for the following prices or less: From Baltimore $265 round-trip, from Dallas/Fort Worth Airport $285 round-trip, from Austin $291 round-trip.

Good to know - Book Cheap St. Louis Plane Tickets

Low season

January

High season

April

Cheapest flight

$37
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Denver to St. Louis

When to book flights to St. Louis

Are your dates flexible? Find out the best times to travel to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. The information is for flights to St. Louis based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights to St. Louis: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew to St. Louis 
Verified travelerFlew with Alaska AirlinesSEA-STLJul 2024
Get to the game prior to boarding. This helps everyone. Crew was great.
LarryFlew with SouthwestLAX-STLApr 2024
For long flights on airlines built for short flights (SWA) anyone over 5’ 10” is going to get cramped. Consider an Economy Plus upgrade when available.
Verified travelerFlew with Spirit AirlinesMCO-STLApr 2024
If traveling a discount carrier, be weather aware.
NashFlew with Alaska AirlinesSEA-STLDec 2023
In long flights (Over 3 hours) you should provide more snacks and drinks.
Verified travelerFlew with Alaska AirlinesSEA-STLFeb 2024
Be sure to measure your wheels for carry on my luggage was the correct size but the wheels made it over so had to check my bag wasn't happy about that since you have to pay for checked should at least get one free.

FAQs - booking St. Louis flights

  • What dining options are there at St. Louis International Airport?

    Visitors to the airport looking to relieve their hunger have many choices at St. Louis International Airport. For gourmet burgers and more, there is Grounded. Artisan pizza is more your thing? Stop by Pizza Studio. And, for local fare and drinks, Schlafly, Three Kings Public House, and Missouri Vineyards are undoubtedly your best options. All three offer a variety of local drinks and dishes that are sure to impress.

  • What is there to do while at St. Louis Lambert International Airport?

    Got some time to kill while at St. Louis International? Why not check out the the art and culture program at the airport? It features a wide range of permanent and rotating artistic and cultural exhibitions and even the occasional event.

  • How to get to and from MidAmerica St. Louis Airport to downtown St. Louis?

    Private shuttles, taxis, and rental cars are undoubtedly the easiest ways to get from MidAmerica St. Louis Airport to downtown St. Louis. However, if you are feeling brave and time is of no concern, you can take a combination of Belleville MetroBus and the MetroLink to make your way into St. Louis proper.

  • Do hotels near St. Louis Lambert International Airport offer free transportation to the airport?

    St. Louis has dozens of hotels that offer complimentary shuttle service to and from the airport. To name just a few of the more popular options, Hyatt Regency St. Louis at The Arch, Hampton Inn St. Louis-Airport, and Pear Tree Inn St. Louis Airport all offer transport to the airport. Additionally, there are toll-free hotel and motel phone centers in the airport for you to call a pick-up without reserving in advance.

  • Does St. Louis Lambert International Airport offer accessible services?

    Yes, STL is an accessible airport. All airlines flying through the airport provide free wheelchair services to their passengers. The services are available from 6 am to 11 pm and the airport has trained staff who will help you through the process. TTY telephones are also provided on all the concourses and each level of all the terminals. The restrooms on the terminal and concourse are equipped with handicap-accessible facilities.

  • What are the lounges available at St. Louis Lambert International Airport?

    American Airlines Admirals Club, USO Lounge, and Wingtips Lounge are available at STL. Any passenger traveling through the airport can access these lounges by purchasing a day pass, paying at the door, or through an annual membership. The American Airlines Admirals Club is near Gate C1 in Terminal 1. It offers beverages, snacks, workstations, Wi-Fi, and Hotspot Printing. The USO lounges are near exit 11 in the Baggage Claim Area in Terminal 2 and Baggage Carousel M6 in Terminal 1. Wingtips Lounge is near Gate E22 on the Airside of Terminal 2.

  • How can I get around St. Louis Lambert International Airport?

    Getting around STL is easy, thanks to the airport’s free Terminal Shuttle. The shuttle offers transit between Exit 12 of both terminals. It operates 24h a day and the ride takes about 10min. The shuttles pick up travelers every 8 to 15min. Super Park Shuttles offer transit to the Super Park Lots A, B, C, D, and E.

  • Are there any ATMs at St. Louis Lambert International Airport?

    If you need cash on arrival at STL, you are welcome to recharge your pockets at the ATMs at the airport. U.S. Bank operates an ATM near Gate C security checkpoint on the Lower Level of Terminal 1. The bank also offers currency exchange services near the C Gates on the Lower Level of Terminal 1. The services are only available on weekdays from 8 am to 5 pm.

  • What is the cheapest flight to St. Louis?

    In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Denver, at $85 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $183 in the last 3 days.

  • How far is Lambert-St Louis Airport from central St. Louis?

    Central St. Louis is 13 miles away from Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    St. Louis is served by Lambert-St Louis Airport, also commonly referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl. The airport code is STL.

  • How much is a flight to St. Louis?

    On average, a flight to St. Louis costs $291. The cheapest price found on KAYAK in the last 2 weeks cost $34 and departed from Quincy Regional Airport.

  • How does KAYAK find such low prices on flights to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to St. Louis

  • Looking for cheap airfare to St. Louis? 25% of our users found round-trip tickets to St. Louis for the following prices or less: From Omaha $259, from Raleigh $264, from Newark $364
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.
  • There are about five shoeshine areas at STL. In Terminal 1, you will get shoeshine services next to the C Checkpoint on the Lower Level and near Hudson on the West End of the Lower Level. Other areas are near Gate E14 in Terminal 2.
  • STL offers to charge lounges with workstations and lounge chairs in the pre-security zones of Terminal 1 and concourses. The seating spaces have between four and 20 lounge chairs with built-in electrical outlets.
  • Got children in tow for your flight to St. Louis? Children can easily become restless in airports so why not stop off at St. Louis International’s Play Port? The Play Port is a great place for kids to burn off a little energy both pre- and post-flight. It features transportation-themed play areas such as a miniature plane, an air traffic control tower, and even a MetroLink train.
  • Considering bringing your furry friend on your trip to St. Louis? Don’t even hesitate, as pets are more than welcome at St. Louis International. There are six total service animal relief areas in the airport, with two outside and four inside the terminals.
  • Finding a parking spot was always a worry for travelers in a rush, but that is a problem of the past at St. Louis Lambert International Airport. The St. Louis International’s Super Park service displays real-time parking information right on the airport’s website. It tells you exactly how full the parking lots are so you can make an informed decision -- and be out of the car and into the airport as quick as possible.
  • St. Louis Lambert International Airport (STL) consists of two terminals. Terminal 2 handles all the arriving international flights and is a hub for Southwest Airlines departures. Terminal 1 handles all departures across Concourses A, B, C, and D.
  • For travelers booking flights to St. Louis, St. Louis Lambert International Airport (STL) is most likely the airport you will fly into. Also known as Lambert Field, it is the primary airport serving the region and is the busiest in Missouri. However, there are two other airports that service the greater St. Louis area. Namely, MidAmerica St. Louis Airport (BLV) and St. Louis Downtown Airport (CPS).
  • For travelers looking to head into St. Louis via public transport from the airport, St. Louis’ MetroLink offers direct and convenient service to both Terminal 1 and 2. Travelers can easily get into the heart of the city by simply hopping onto a train at either one of the terminals.
  • STL offers a venue travelers can rent for weddings, receptions, business meetings, social soirees, and fundraisers. The space is located in Concourse B and hosts up to 2,000 people.
  • If you wish to whisper a prayer before or after your flight, you’re welcome to use STL’s chapels. The airport’s interfaith chapels are near Gate E40 in Terminal 2 and by exit 11 on the Baggage Claim Area of Terminal 1.
See more tips

Top 5 airlines flying to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United States to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4275 reviews
7.6Entertainment
8.0Comfort
8.6Crew
8.2Boarding
7.1Food
Airline reviews

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

6.0 GoodCarolynn, Mar 2025KOA - SMF
Read more Southwest reviews

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

1.5 hour delay, poor service, no compassion from the crew. Terrible experience

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Short flight with plenty of open seats. Drinks and snacks were still provided even on such a short flight. <1 hr

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Very good. Sad to learn Southwest is going start to charge for bags

Our flight was diverted from being a non-stop to getting within 150 miles and requiring another plane. We heard 4 or 5 different versions from SW as to why we had to stop, then wait for a replacement plane. Five hour delay, weather did not come up as a single excuse.... communication was not clear and well explained. No one really took charge!

My flight to Chicago left and landed early. My return flight left two minutes late and arrived 2 minutes late. My seat selections were ideal! There were no snacks going to Chicago and no snacks on the return trip. There are no charging outlets on board.

WiFi on the flight was not working. Thus, entertainment options were limited.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Terrible and im avoiding them in the future. My initial flight was delayed causing me to rebook my flight and when speaking with the representative to rebook I explained this is the second time my flights were delayed and they did nothing to help me. I wasn't booked to comfort plus or given a voucher or anything. I was almost late for my meeting that I needed to attend on Monday because of the games delta played delaying my flights even more and putting me in the very back of the plane next to an extremely intoxicated passenger

Flights on time. .Ride was as comfortable as can be expected in steerage. Luggage arrived at destination. Attendants were fairly friendly.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

The WiFi didn't seem as fast as it normally is

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

Delta is a premier airline so my expectations are most always met.

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

The trip was very smooth and they provided great customer service

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Cabin was roomy enough to easily slide my carry on under the seat in front of me!

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

The worst flight of my life. Never will I fly frontier again

Landing in terminal 2, but my luggage is terminal 3. We (and others) were looking for it in terminal 1. We probably missed the crew broadcast, but the communication could have been clearer for non native (or elderly) passengers.

I chose the seats when booked the flight and paid for them. However after checking in I found we were assigned different seats!

Bag should not be so much money. This is how Frontier takes advantage of customers

The plane was comfortable. The time to board was way too slow and very unorganized! The crew was not as friendly as normally. The was not a single time that they offered water nor anything!!!

They switched my flight to Spirit, Never using Kayak again,

i was denied boarding, even though i had an assigned seat, checked in on line and was at airport early. Then they refused to fully refund the the fair and replacement fair because they claimed it was "no show/denied boarding". I will never fly this airline again

I was not permitted on my flight and had to purchase another flight ticket to Las Vegas.

This was a full flight and I was in Zone 1, however upon boarding, several other zones went in ahead of me, leaving no overhead cabin space near my seat. This created a challenging disembarkment process.

Everything you need to know for your flight to St. Louis

Flights with popular airlines flying to St. Louis

Flights from the other most popular airlines that fly from the United States to St. Louis according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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