STL

$83 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 5/27. 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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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

Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
7:00 pm - 11:11 pm
MCI
-
STL
4h 11m
1 stop
United Airlines Logo
9:10 am - 2:25 pm
STL
-
MCI
5h 15m
1 stop
$231United Airlines
Wed, Apr 22 - Wed, Apr 29
Southwest Logo
11:55 am - 1:00 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
8:55 pm - 10:00 pm
STL
-
MCI
1h 05mnonstop
$235Southwest
Wed, Apr 22 - Wed, Apr 29
Southwest Logo
5:25 am - 9:30 am
MCI
-
STL
4h 05m
1 stop
Southwest Logo
8:55 pm - 10:00 pm
STL
-
MCI
1h 05mnonstop
$239Southwest
Thu, Aug 13 - Mon, Aug 17
Frontier Logo
1:45 pm - 7:23 pm
MCI
-
STL
5h 38m
1 stop
Frontier Logo
8:08 pm - 1:00 pm
STL
-
MCI
16h 52m
1 stop
$241Frontier
Mon, Apr 20 - Wed, Apr 22
American Airlines Logo
6:06 pm - 10:17 pm
MCI
-
STL
4h 11m
1 stop
American Airlines Logo
5:20 am - 10:15 am
STL
-
MCI
4h 55m
1 stop
$253American Airlines
Sat, May 23 - Wed, May 27
Frontier Logo
2:34 pm - 2:48 pm
MCI
-
STL
24h 14m
2 stops
Frontier Logo
8:08 pm - 1:49 pm
STL
-
MCI
17h 41m
1 stop
$255Frontier
Sat, May 23 - Wed, May 27
Southwest Logo
12:50 pm - 7:50 pm
MCI
-
STL
7h 00m
1 stop
Southwest Logo
8:30 am - 9:40 am
STL
-
MCI
1h 10mnonstop
$257Southwest
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
6:01 pm - 10:30 am
MCI
-
STL
16h 29m
2 stops
Multiple Airlines Logo
8:23 pm - 10:58 am
STL
-
MCI
14h 35m
1 stop
$271Multiple Airlines
Fri, Apr 24 - Fri, May 1
American Airlines Logo
10:16 am - 8:27 am
COU
-
STL
22h 11m
1 stop
American Airlines Logo
8:03 pm - 9:46 am
STL
-
COU
13h 43m
1 stop
$491American Airlines
Thu, Apr 9 - Mon, Apr 13
Multiple Airlines Logo
2:30 pm - 11:47 am
TBN
-
STL
21h 17m
3 stops
Multiple Airlines Logo
4:20 pm - 11:45 am
STL
-
TBN
19h 25m
2 stops
$2,603Multiple Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$83
Best time to beat the crowds but there is 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 4331 reviews
8.6Crew
8.1Boarding
8.0Comfort
7.0Food
7.5Entertainment
Airline reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

2.0 MediocreStuart, Mar 2026
HOU - STL
Read more Southwest reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

Southwest continues to do less for more money. Flight attendants used to be fun and friendly. But now it’s like they don’t even see you. Such a shame.

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

I liked it better when you were truer to your roots Am paying more for less fun

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

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

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