$27 Find Cheap Flights from North America 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 3/31. 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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Flight Deals

Cheap Flights from North America to St. Louis

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

Recent round-trip flight deals from North America to St. Louis

Wed, Apr 29 - Wed, Apr 29
Frontier Logo
6:00 am - 6:50 am
ATL
-
STL
1h 50mnonstop
Frontier Logo
8:23 pm - 11:09 pm
STL
-
ATL
1h 46mnonstop
$65Frontier
Tue, Mar 31 - Tue, Apr 7
Frontier Logo
9:41 am - 10:32 am
ATL
-
STL
1h 51mnonstop
Frontier Logo
11:21 am - 2:07 pm
STL
-
ATL
1h 46mnonstop
$66Frontier
Tue, Mar 31 - Thu, Apr 2
Frontier Logo
9:41 am - 10:32 am
ATL
-
STL
1h 51mnonstop
Frontier Logo
6:29 pm - 9:15 pm
STL
-
ATL
1h 46mnonstop
$73Frontier
Tue, Apr 21 - Sat, Apr 25
Southwest Logo
11:40 am - 11:15 pm
SEA
-
STL
9h 35m
2 stops
Southwest Logo
10:35 am - 5:55 pm
STL
-
SEA
9h 20m
2 stops
$220Southwest
Tue, Apr 14 - Wed, Apr 22
Southwest Logo
6:30 am - 5:55 pm
SEA
-
STL
9h 25m
2 stops
Southwest Logo
5:30 am - 6:00 pm
STL
-
SEA
14h 30m
2 stops
$225Southwest
Tue, Mar 31 - Wed, Apr 1
American Airlines Logo
3:00 pm - 11:59 pm
SEA
-
STL
6h 59m
1 stop
American Airlines Logo
4:13 pm - 11:09 pm
STL
-
SEA
8h 56m
1 stop
$229American Airlines
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
9:10 pm - 10:59 pm
DFW
-
STL
1h 49mnonstop
American Airlines Logo
5:20 am - 7:22 am
STL
-
DFW
2h 02mnonstop
$245American Airlines
Thu, Apr 9 - Sat, Apr 11
United Airlines Logo
8:20 am - 12:22 pm
IAD
-
STL
5h 02m
1 stop
United Airlines Logo
8:30 am - 11:43 am
STL
-
IAD
2h 13mnonstop
$275United Airlines
Wed, Apr 8 - Sat, Apr 11
United Airlines Logo
9:00 am - 10:28 am
IAD
-
STL
2h 28mnonstop
United Airlines Logo
8:30 am - 11:43 am
STL
-
IAD
2h 13mnonstop
$276United Airlines
Tue, Apr 7 - Sat, Apr 18
Delta Logo
10:30 am - 12:22 pm
LGA
-
STL
2h 52mnonstop
Delta Logo
12:50 pm - 4:23 pm
STL
-
LGA
2h 33mnonstop
$286Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$27
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Atlanta to St. Louis

Flights from North America to St. Louis: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from North America to St. Louis 
WaleFlew with United Airlines
IAH
-
STL
Dec 2025
Make sure your electronics are charged before boarding, the plane doesn’t have power outlets
Verified travelerFlew with Alaska Airlines
SEA
-
STL
Jul 2025
Give yourself extra time. Love the self check in options.
LarryFlew with Southwest
LAX
-
STL
Apr 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 Alaska Airlines
SEA
-
STL
Feb 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 for booking flights from North America to St. Louis

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from North America 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 North America 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 to North America with another airline.

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

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

 
Need help choosing which airline to fly with from North America 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 4318 reviews
7.0Food
8.1Boarding
7.5Entertainment
8.0Comfort
8.6Crew
Airline reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

4.0 OkayKenny, Mar 2026
TPA - BWI
Read more Southwest reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

No pilots so we were two hours late taking off and then no gate agents when we arrived in Salt Lake.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

Everything was on time and service on the flight was great!

The boarding in Buenos Aires (at the on ramp) was not great. They had to check every carry on. Not a United problem but was a Buenos Aires problem.

Staff and aircraft were good. However, weather in Houston lee to a ground stop. We were looking at circling behind three other planes until the stop was lifted. Pilot said we didn’t have enough fuel for that. So we flew on to New Orleans as the closest port with immigration and customs staff. Landed there and sat in the plane for two hours plus while staff was sorted. Turned away by ICE. Waited for pilots to be switched out, but after they were approved by ICE. Then had to wait to get a runway because so many planes were ahead of us. Finally took off and flew back to Houston. We all missed our connecting flights because it took too long. Hotel voucher from United was only a link to booking site. Total BS. Finally got a flight out the next day after a night without sleep because all the Houston hotels were booked by rodeo and spring break crowds.

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

I paid $7,000 to fly round trip to Porto. I thought it was for business class. But on the leg from Miami to Newark, and again from Newark to Miami, i was in coach. One time in the middle seat of coach. From Newark to Porto I was in business class as expected, and it was fine. I fly to Portugal once per month, often paying $5,000 for business class. Usually i fly American Airlines. I'd be happy to fly more with United Airlines. But my experience was disappointing because i was put in the coach for almost half the flights.

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

It’s always a great time flying with united airlines.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

I booked 1st class, my flights were changed and I was sitting in the middle at the back of the plane. A far cry from the 1st class I purchased for my flights. I am grateful I arrived on time.

Movie selections were very limited. Meals were not f So good.

Older airplane with worn out seats. No entertainment system at all. Connecting to Wi-Fi was problematic and hit and miss.

AA is flying sub par aging 787's to Tokyo. I fly other 787's long haul and these are at the bottom. Seats don't work well, tray tables don't work well and were dirty. The flight was great, the plane was not.

There was no beverage service and the only time I saw a crew member walk through the cabin is when we were preparing to land.

Our flight was delayed 3 times and this is why I am giving such low reviews. Everything else was okay but being in the airport at 4:30pm for my initial flight at 7pm to not leave until after 9:30pm is insane,

Flights were constantly delayed. CRW took 50 minutes to get bags

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

Check in was rough because the check in crew did not know how to manage my international visa documents. Required a long process and 4 people to finally be able to proceed to security. They told us incorrect information several times before acknowledging we did indeed have everything we needed from the start.

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

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.

Frontier line changes my flight schedule with out my authorization. They never ask me and with out my concern they cut off 4 hours of my vacation they force my to leave 4 hours early from Puerto Rico.

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.

Traveling to a place near St. Louis?

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O'Fallon
Wentzville
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Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis