STL

$79 Find Cheap Flights from Missouri 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 4/4. 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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Everything you should know

Cheapest round-trip
$232
Overall average: $602
Multiple Airlines
Mon 2/9Mon 2/16
MCI - STL • 2 stops
Cheapest non-stop
$307
Typical prices: $435-$445
Southwest
Sat 1/31Mon 2/2
MCI - STL • Non-stop
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Missouri to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missouri 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 Missouri to St. Louis

Mon, Feb 9 - Mon, Feb 16
Multiple Airlines Logo
11:26 am - 10:27 pm
MCI
-
STL
35h 01m
2 stops
Multiple Airlines Logo
10:11 pm - 11:33 pm
STL
-
MCI
25h 22m
1 stop
$232Multiple Airlines
Thu, Feb 12 - Sun, Feb 15
Frontier Logo
8:28 pm - 1:09 pm
MCI
-
STL
16h 41m
1 stop
Frontier Logo
3:49 pm - 9:53 am
STL
-
MCI
18h 04m
2 stops
$242Frontier
Mon, Feb 9 - Mon, Feb 16
Multiple Airlines Logo
5:04 pm - 10:27 pm
MCI
-
STL
29h 23m
1 stop
Multiple Airlines Logo
10:11 pm - 11:33 pm
STL
-
MCI
25h 22m
1 stop
$249Multiple Airlines
Tue, Feb 10 - Wed, Feb 11
United Airlines Logo
10:00 am - 2:30 pm
MCI
-
STL
4h 30m
1 stop
United Airlines Logo
8:05 am - 2:27 pm
STL
-
MCI
6h 22m
1 stop
$259United Airlines
Tue, Feb 10 - Wed, Feb 11
Southwest Logo
3:55 pm - 5:00 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
10:15 am - 11:25 am
STL
-
MCI
1h 10mnonstop
$307Southwest
Wed, Mar 25 - Fri, Mar 27
Frontier Logo
11:40 am - 10:31 am
MCI
-
STL
22h 51m
1 stop
Frontier Logo
8:12 pm - 3:10 pm
STL
-
MCI
18h 58m
2 stops
$314Frontier
Tue, Feb 10 - Wed, Feb 11
Southwest Logo
4:55 pm - 9:55 pm
MCI
-
STL
5h 00m
1 stop
Southwest Logo
10:15 am - 11:25 am
STL
-
MCI
1h 10mnonstop
$317Southwest
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
11:27 am - 4:02 pm
MCI
-
STL
4h 35m
1 stop
United Airlines Logo
6:25 am - 10:30 am
STL
-
MCI
4h 05m
1 stop
$319United Airlines
Tue, Feb 10 - Wed, Feb 11
Southwest Logo
6:10 am - 7:25 am
MCI
-
STL
1h 15mnonstop
Southwest Logo
10:15 am - 5:00 pm
STL
-
MCI
6h 45m
2 stops
$323Southwest
Tue, Jan 27 - Sat, Jan 31
American Airlines Logo
11:56 am - 9:15 pm
COU
-
STL
9h 19m
1 stop
American Airlines Logo
6:43 pm - 11:23 am
STL
-
COU
40h 40m
1 stop
$600American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$85
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Kansas City to St. Louis

FAQs for booking flights from Missouri to St. Louis

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

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

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

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

Reviews of the top airline flying from Missouri to St. Louis

 
Need help choosing which airline to fly with from Missouri 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 4256 reviews
7.0Food
8.0Comfort
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

10.0 ExcellentDaniel, Jan 2026
BWI - MHT
Read more Southwest reviews

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

We got exit row seats both flights. Everything was running on time

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Pretty seamless, just a tad bit late in taking off and landing.

Flight was fine other than there was a gate change that I was not notified of. By chance I happened to check my phone and saw the change, otherwise, we would have missed our connecting flight.

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

Check-in, Boarding and flight were smooth. All the employees and crew was very nice and funny. They gave the kids crayons and workbooks to keep them occupied which was a big win. I’ve flown Southwest many times and that’s the first time I’ve seen that and it is a great addition.

Flight was on time. Wi-fi was a little spotty/slow. Boarding and exit were efficient.

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

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

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

St. Louis (STL)