STL

$62 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 11/18. 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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Everything you should know

Cheapest round-trip
$149
Overall average: $282
American Airlines
Tue 12/9Thu 12/11
MCI - STL • 1 stop
Cheapest non-stop
$157
Typical prices: $235-$512
Southwest
Thu 11/13Mon 11/17
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

Tue, Dec 9 - Thu, Dec 11
American Airlines Logo
10:45 am - 4:34 pmMCI-STL
5h 49m1 stop
American Airlines Logo
7:00 am - 12:45 pmSTL-MCI
5h 45m1 stop
$149American Airlines
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Thu, Nov 13 - Mon, Nov 17
Southwest Logo
6:15 pm - 7:20 pmMCI-STL
1h 05mnonstop
Southwest Logo
8:20 pm - 9:30 pmSTL-MCI
1h 10mnonstop
$157Southwest
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Thu, Nov 13 - Mon, Nov 17
Frontier Logo
12:31 pm - 11:24 amMCI-STL
22h 53m1 stop
Frontier Logo
7:45 pm - 5:19 pmSTL-MCI
21h 34m1 stop
$161Frontier
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Tue, Nov 4 - Tue, Nov 11
Frontier Logo
6:49 pm - 9:07 amMCI-STL
14h 18m1 stop
Frontier Logo
7:45 pm - 5:19 pmSTL-MCI
21h 34m1 stop
$169Frontier
Find Deal
Tue, Nov 4 - Tue, Nov 11
Frontier Logo
6:49 pm - 9:07 amMCI-STL
14h 18m1 stop
Frontier Logo
7:45 pm - 11:46 amSTL-MCI
40h 01m2 stops
$200Frontier
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Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
5:46 am - 9:27 amMCI-STL
3h 41m1 stop
American Airlines Logo
5:24 am - 10:22 amSTL-MCI
4h 58m1 stop
$209American Airlines
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Thu, Nov 13 - Mon, Nov 17
Multiple Airlines Logo
12:31 pm - 11:24 amMCI-STL
22h 53m1 stop
Multiple Airlines Logo
7:45 pm - 12:28 pmSTL-MCI
16h 43m2 stops
$215Multiple Airlines
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Thu, Nov 20 - Thu, Nov 27
Multiple Airlines Logo
10:26 am - 3:08 pmMCI-STL
28h 42m1 stop
Multiple Airlines Logo
10:53 am - 12:03 pmSTL-MCI
25h 10m2 stops
$222Multiple Airlines
Find Deal
Sat, Nov 15 - Sun, Nov 16
Multiple Airlines Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
Multiple Airlines Logo
6:21 pm - 6:28 pmSTL-MCI
24h 07m1 stop
$223Multiple Airlines
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Tue, Dec 9 - Thu, Dec 11
Southwest Logo
12:00 pm - 1:00 pmMCI-STL
1h 00mnonstop
Southwest Logo
2:25 pm - 3:35 pmSTL-MCI
1h 10mnonstop
$233Southwest
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Useful Info

Good to know

Low seasonJanuary
Cheapest flight$62
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 2% 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 4237 reviews
7.5Entertainment
7.0Food
8.0Comfort
8.6Crew
8.1Boarding
Airline reviews

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

10.0 ExcellentStacy, Oct 2025SMF - DEN
Read more Southwest reviews

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

mandatory demand customer to check their carry on because not enough people check bags.

Connecting flight is on time and boarding was a breeze!

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

As always, the entire Southwest experience was perfect. Purchasing the tickets on the Southwest web site was effortless, departure and arrival gates were spotless and comfortable, plane was clean and comfortable, crew was excellent and flight was on time. Wheelchair service in Las Vegas at departure was somewhat chaotic and disjointed, but I am not sure if that was Southwest problem, airport problem or combination.

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

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