$40 Find Deals on Flights from 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 from St. Louis to Worldwide departing on 3/18. 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.
1 adult
1 adult, Economy, 0 bags

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Find Cheap Flights from St. Louis

Where can I fly from St. Louis?Prices from STL, departing Wed 3/18 and returning Wed 3/25

Book Cheap International Flights from St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip international flight deals from St. Louis to anywhere

Tue, Apr 7 - Fri, Apr 17
Frontier Logo
6:15 am - 9:32 am
STL
-
CUN
3h 17mnonstop
Frontier Logo
11:44 am - 3:15 pm
CUN
-
STL
3h 31mnonstop
$337Frontier
Wed, May 6 - Sat, May 16
Frontier Logo
6:00 am - 9:17 am
STL
-
CUN
3h 17mnonstop
Frontier Logo
11:44 am - 3:15 pm
CUN
-
STL
3h 31mnonstop
$338Frontier
Sun, May 10 - Wed, May 13
Frontier Logo
6:00 am - 9:17 am
STL
-
CUN
3h 17mnonstop
Frontier Logo
11:44 am - 3:15 pm
CUN
-
STL
3h 31mnonstop
$341Frontier
Tue, Apr 14 - Tue, Apr 28
United Airlines Logo
8:15 pm - 1:15 pm
STL
-
BCN
34h 00m
1 stop
United Airlines Logo
12:15 pm - 9:08 pm
BCN
-
STL
39h 53m
2 stops
$467United Airlines
Tue, Apr 14 - Tue, Apr 28
United Airlines Logo
8:15 pm - 8:00 am
STL
-
BCN
28h 45m
2 stops
United Airlines Logo
12:15 pm - 9:47 pm
BCN
-
STL
40h 32m
2 stops
$470United Airlines
Sun, Apr 12 - Tue, Apr 28
Air Canada Logo
4:05 pm - 8:00 am
STL
-
BCN
32h 55m
2 stops
Air Canada Logo
1:15 pm - 3:24 pm
BCN
-
STL
33h 09m
1 stop
$474Air Canada
Sun, Apr 12 - Thu, Apr 23
Delta Logo
9:42 am - 9:55 am
STL
-
MAD
17h 13m
1 stop
Delta Logo
12:45 pm - 11:36 pm
MAD
-
STL
17h 51m
1 stop
$491Delta
Mon, Apr 13 - Thu, Apr 23
United Airlines Logo
7:45 am - 8:05 am
STL
-
MAD
17h 20m
2 stops
United Airlines Logo
10:50 am - 10:56 pm
MAD
-
STL
19h 06m
2 stops
$496United Airlines
Wed, Apr 15 - Mon, Apr 20
Iberia Logo
12:55 pm - 1:30 pm
STL
-
MAD
17h 35m
1 stop
Iberia Logo
5:30 pm - 7:30 pm
MAD
-
STL
33h 00m
1 stop
$516Iberia
Sun, Apr 26 - Wed, May 6
Lufthansa Logo
3:30 pm - 5:55 pm
STL
-
LCY
20h 25m
1 stop
Lufthansa Logo
9:15 am - 10:59 pm
LCY
-
STL
19h 44m
2 stops
$674Lufthansa

Book Cheap Domestic Flights from St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip domestic flight deals from St. Louis

Sat, Mar 21 - Wed, Mar 25
Frontier Logo
8:12 pm - 9:49 pm
STL
-
DEN
2h 37mnonstop
Frontier Logo
6:35 am - 9:49 am
DEN
-
STL
2h 14mnonstop
$76Frontier
Sat, Mar 7 - Wed, Mar 11
Frontier Logo
8:12 pm - 9:49 pm
STL
-
DEN
2h 37mnonstop
Frontier Logo
6:35 am - 9:49 am
DEN
-
STL
2h 14mnonstop
$77Frontier
Sat, Mar 21 - Mon, Mar 23
Frontier Logo
8:12 pm - 9:49 pm
STL
-
DEN
2h 37mnonstop
Frontier Logo
6:35 am - 9:49 am
DEN
-
STL
2h 14mnonstop
$78Frontier
Mon, Mar 16 - Wed, Mar 18
Frontier Logo
8:10 pm - 11:39 pm
STL
-
MCO
2h 29mnonstop
Frontier Logo
5:45 am - 7:37 am
MCO
-
STL
2h 52mnonstop
$80Frontier
Tue, Aug 11 - Thu, Aug 27
Alaska Airlines Logo
7:30 pm - 10:00 pm
STL
-
SEA
4h 30mnonstop
Alaska Airlines Logo
8:32 am - 2:26 pm
SEA
-
STL
3h 54mnonstop
$189Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
10:11 pm - 5:47 am
STL
-
DFW
7h 36m
1 stop
Multiple Airlines Logo
8:40 pm - 10:27 pm
DFW
-
STL
25h 47m
2 stops
$244Multiple Airlines
Thu, Mar 26 - Thu, Apr 2
American Airlines Logo
5:12 am - 7:21 am
STL
-
DFW
2h 09mnonstop
American Airlines Logo
9:10 pm - 10:58 pm
DFW
-
STL
1h 48mnonstop
$245American Airlines
Wed, Apr 1 - Wed, Apr 8
Southwest Logo
8:35 am - 10:50 am
STL
-
HOU
2h 15mnonstop
Southwest Logo
10:25 am - 12:25 pm
HOU
-
STL
2h 00mnonstop
$277Southwest
Wed, Mar 11 - Sat, Mar 14
American Airlines Logo
5:12 am - 11:48 am
STL
-
HOU
6h 36m
1 stop
American Airlines Logo
6:00 am - 3:57 pm
HOU
-
STL
9h 57m
1 stop
$278American Airlines
Wed, Apr 1 - Wed, Apr 8
Southwest Logo
5:15 pm - 7:35 pm
STL
-
HOU
2h 20mnonstop
Southwest Logo
8:55 am - 12:50 pm
HOU
-
STL
3h 55m
1 stop
$283Southwest
Booking Insights

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

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

Which are the most popular places to fly to from St. Louis?

The domestic destinations KAYAK users have most searched for when searching for flights from St. Louis.

Based on KAYAK flight searches, the most popular place to fly from St. Louis is New York (10% of total searches). The next most popular destinations are Las Vegas Harry Reid Intl (9%) and Orlando (6%).

What are the most popular international flights out of St. Louis?

The international destinations KAYAK users have most searched for when searching for flights from St. Louis.

There are many international destinations you can fly to from St. Louis. The most popular international destinations among KAYAK users are Paris, San Juan and Cancún.

What are the most popular countries to fly to from St. Louis?

The most popular countries KAYAK users have searched for from St. Louis along with the average round-trip price for the route clicked by KAYAK users in the last 2 weeks.

Based on KAYAK flight searches, the most popular country to fly to from St. Louis is Germany (48% of total searches). The next most popular destinations are Canada (25%) and Mexico (13%).

Which cities can I fly to direct from St. Louis?

There are loads of places you can fly direct to from St. Louis. The most popular destinations for direct flights among KAYAK users are Jacksonville, Chicago, San Diego, Los Angeles and Tampa. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was Tampa at $227, while the most expensive was Chicago, at $351.

Which international cities can I fly to direct from St. Louis?

There are many international destinations you can fly to non-stop from St. Louis. The most popular international destinations from KAYAK users are Cancún and Toronto. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was Cancún at $361, while the most expensive was Toronto, at $752.

What are the cheapest places to fly to from St. Louis?

The cheapest destination for a flight from St. Louis found on KAYAK in the last two weeks was Orlando and cost $29. The next cheapest destinations were Las Vegas at $34 and Sarasota at $69.

Good to know

Low seasonJanuary
Cheapest flight$40
Best time to beat the crowds with an average 5% drop in price.
Flight from St. Louis to Orlando Airport

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

Insights shared by verified travelers who flew from St. Louis to anywhere 
JeffreyFlew with Alaska Airlines
STL
-
SEA
Jun 2025
Don’t get to the airport too early. Security is fast and lines are typically short!
LauraFlew with Spirit Airlines
STL
-
FLL
Sep 2024
If you have kids, and are in gate C, take advantage of the kids play area. terminal isn't too large and you can walk to the last gate in minutes.
CarolFlew with Lufthansa
STL
-
FRA
Jul 2024
Get to airport at least 1.5 hr early.

FAQs for booking flights out of St. Louis

  • How convenient is it to travel with kids from St. Louis to other locations around the globe?

    You can leave from St. Louis in luxury with your kids. While you wait to board your flights, your kids can play a variety of games and make new contacts at the activity center located in the international departure hall of STL Airport. The free Wi-Fi connections provided by Alaska Airlines and Delta Airlines, the two major airlines that operate numerous flights between St. Louis and the rest of the world, will keep your kids from becoming bored while they watch their favorite shows and listen to their favorite music.

  • When flying to any location in the world, how can I board the first plane leaving St. Louis?

    If you want to depart St. Louis as soon as possible, think about staying at one of the accommodations that are most convenient to STL Airport. One of many hotels in the area that provides free airport shuttle service, the Pear Tree Inn St. Louis Airport is only a 6-minute walk from the airport.

  • Where can I find long-term parking at St. Louis Lambert International Airport (STL)?

    There are many parking alternatives available at STL Airport, so visitors who want to leave their cars there need not worry. Parking at the STL is reasonably priced, ranging from approximately $7 per day for Economy Parking in the Terminal Parking Garages. Lot B at St. Louis Lambert Airport houses long-term parking lots for roughly $10 per day.

  • What special services are available on flights out of St. Louis?

    Free wheelchair rentals for passengers with mobility issues and aid with movement for travelers with vision impairments are mainly the two special services offered on flights leaving STL Airport. These and other specialist services are offered by STL staff from each airline.  

  • What is St. Louis also known as?

    Lambert-St Louis Airport’s airport code is STL. It can also be referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, St. Louis Lambert Intl.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from 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 from 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 your destination with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from 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 from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding a cheap flight out of St. Louis

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Denver $144 one-way - $239 round-trip; Orlando $83 one-way - $161 round-trip; Chicago $229 one-way - $470 round-trip
  • St. Louis Lambert International Airport (STL) is the main airport from which the bulk of flights from St. Louis depart for locations across the world. The cheapest way to go from downtown St. Louis or the city center to STL airport is via public bus. If you want to go to the airport quickly but don't mind spending a little extra money, you can take a taxi.
  • The bulk of daily departures from St. Louis is provided by Alaska Airlines and Delta Airlines at St. Louis Lambert International Airport. As a result, if you purchase a ticket with one of these carriers, you can be certain that it will work with your trip plans regardless of where you want to go.
  • Travelers whose flights from St. Louis depart from STL Airport, which serves as the hub for American Airlines and Southwest Airlines, can take advantage of a number of advantages. Fewer delays and more departures per day are two of the most important advantages they are anticipated to experience.
  • Pets are allowed on most flights leaving St. Louis at STL. The St. Louis Airport has two outdoor areas and four post-security animal relieving spots. By gate A16 in Concourse A is one animal relief facility. Another is located close to gate C24 in Concourse C. In Terminal 2, close to gate E4, there is a third location. The final station is located next to gate E40 in Terminal 2.
  • Travelers from other adjacent cities to St. Louis, such as Berkeley, Hazelwood, and Saint Ann, can readily do so from STL Airport when departing for other areas throughout the world. These venues are dispersed over a 12 km (7.5 miles) area, so getting to STL Airport in St. Louis by bus, taxi, or rental car is straightforward.

Reviews of the top 5 airlines serving from St. Louis to Worldwide

 
Need help choosing which airline to fly with from St. Louis to Worldwide? 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 4285 reviews
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
8.1Boarding
Airline reviews

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

4.0 OkayAnonymous, Feb 2026
BOI - LAS
Read more Southwest reviews

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

My flight from Denver to Minneapolis was excellent. My flight from Minneapolis to Denver was one of the worst I flights I have ever experienced. I had a window seat, the gentleman in the middle seat was morbidly obese and SW should have made him purchase two seats. His elbow dug into my arm most of the way even after I asked to please be careful. I was literally squashed between the him and the window with no wiggle room. The plane was full so it was not possible to ask for a different seat. I realize I should have complained to the flight attendant but I didn't feel anything could be done to rectify the situation. I fly SW often, I will continue to do so as this was my first negative experience.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

Flight attendants very hospitable and friendly. Pilot flew a smooth take off and landing.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Good experience and the flight landed early. There was no food I had or entertainment.

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

Flight was delayed. No information on why it was delayed. After we boarded the flight, , the crew made announcement that the captain hs not arrived and he will take 15 mins more to arrive. Passengers were just sitting patiently for the captain to arrive and start, Terrible experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Excellent!!! Aeromexico is a great airline. What was not that good is the service provided by Kayak. It is never clear and not easy to manage.

Entertainment kept turning itself off. Gave up on watching a movie.

Both the WIFI and entertainment did not work for 2.5h

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Didn't get a seat assignment until the last minute even though i picked a seat.

American has been able to implement an algorithm that makes it possible for nearly every one of my evening flights to be late. Congratulations!

I was on a small regional flight from Detroit to Philadelphia. When we landed the outside cruise needed to turn something off with the engine, which took quite a long time. Then, when they allowed us to get off the plane it was outside. They took their time, unloading all the luggage and waited till they unloaded all the luggage before they brought it over to us. It was 9 o’clock at night freezing cold out, and there was no proactive hustle to try to get people their luggage. It was really one of the worst experiences I think I’ve ever had with American until a manager came over. I don’t think they were going to even consider pulling the luggage over to the people that had been waiting outside for at least 10 minutes in the freezing cold.

The flight was fine, once we got underway. It was more than hour delayed

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Waited for oxygen tanks for 30 minutes after boarding was complete.

The seats are too uncomfortable for anyone over 5ft 8in. I'm 5'10" with a back and hip issue and I was in pai for the full duration of the flight.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

First of all we hade waited 3 hours in the airplane waiting to leave. Second the return schedule was changed and it messed up my entire vaction. I won't buy never again another flight and recommend to nobody traveling with them.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

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Information on your arrival and departure airports