STL

$72 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 2/27. 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
$152
Overall average: $319
Frontier
Fri 1/23Mon 1/26
MCI - STL • 1 stop
Cheapest non-stop
$297
Typical prices: $583-$602
Southwest
Mon 2/9Wed 2/11
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

Fri, Jan 23 - Mon, Jan 26
Frontier Logo
8:41 pm - 2:46 pm
MCI
-
STL
18h 05m1 stop
Frontier Logo
1:40 pm - 7:51 pm
STL
-
MCI
6h 11m1 stop
$152Frontier
Mon, Feb 9 - Wed, Feb 11
Multiple Airlines Logo
7:00 am - 8:50 pm
MCI
-
STL
13h 50m1 stop
Multiple Airlines Logo
3:49 pm - 10:30 am
STL
-
MCI
18h 41m2 stops
$220Multiple Airlines
Fri, Jan 23 - Mon, Jan 26
Multiple Airlines Logo
11:26 am - 6:51 am
MCI
-
STL
19h 25m2 stops
Multiple Airlines Logo
1:40 pm - 7:51 pm
STL
-
MCI
6h 11m1 stop
$225Multiple Airlines
Mon, Feb 9 - Wed, Feb 11
Multiple Airlines Logo
7:00 am - 8:50 pm
MCI
-
STL
13h 50m1 stop
Multiple Airlines Logo
3:28 pm - 7:33 pm
STL
-
MCI
28h 05m1 stop
$231Multiple Airlines
Sat, Jan 17 - Sat, Jan 24
Multiple Airlines Logo
7:00 am - 12:40 pm
MCI
-
STL
29h 40m1 stop
Multiple Airlines Logo
3:46 pm - 7:51 pm
STL
-
MCI
28h 05m1 stop
$245Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
United Airlines Logo
10:00 am - 2:30 pm
MCI
-
STL
4h 30m1 stop
United Airlines Logo
6:30 am - 10:32 am
STL
-
MCI
4h 02m1 stop
$272United Airlines
Wed, Jan 28 - Wed, Jan 28
United Airlines Logo
8:00 am - 12:29 pm
MCI
-
STL
4h 29m1 stop
United Airlines Logo
6:00 pm - 11:30 pm
STL
-
MCI
5h 30m1 stop
$273United Airlines
Thu, Jan 22 - Thu, Jan 29
Multiple Airlines Logo
5:04 pm - 11:33 pm
MCI
-
STL
30h 29m1 stop
Multiple Airlines Logo
10:01 pm - 7:51 pm
STL
-
MCI
21h 50m2 stops
$277Multiple Airlines
Sat, Jan 17 - Sat, Jan 24
Multiple Airlines Logo
7:00 am - 12:40 pm
MCI
-
STL
29h 40m1 stop
Multiple Airlines Logo
5:42 pm - 10:31 am
STL
-
MCI
16h 49m2 stops
$280Multiple Airlines
Thu, Feb 12 - Tue, Feb 17
United Airlines Logo
8:00 am - 3:38 pm
MCI
-
STL
7h 38m1 stop
United Airlines Logo
11:25 am - 3:45 pm
STL
-
MCI
4h 20m1 stop
$296United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$72
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 1% increase in price.
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 4258 reviews
7.5Entertainment
8.0Comfort
7.0Food
8.1Boarding
8.6Crew
Airline reviews

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.

10.0 ExcellentAnonymous, Dec 2025
DAL - CHS
Read more Southwest reviews

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.

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

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)