STL

$97 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 4/20. 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 1 - Sat, Apr 4
Southwest Logo
11:05 am - 12:10 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
8:25 am - 9:35 am
STL
-
MCI
1h 10mnonstop
$185Southwest
Thu, Mar 26 - Mon, Mar 30
Southwest Logo
12:40 pm - 1:45 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
4:05 pm - 5:15 pm
STL
-
MCI
1h 10mnonstop
$193Southwest
Wed, Apr 1 - Sat, Apr 4
Southwest Logo
10:00 am - 3:25 pm
MCI
-
STL
5h 25m
1 stop
Southwest Logo
8:25 am - 9:35 am
STL
-
MCI
1h 10mnonstop
$195Southwest
Thu, Mar 26 - Mon, Mar 30
Southwest Logo
12:40 pm - 1:45 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
4:45 pm - 8:00 pm
STL
-
MCI
3h 15m
1 stop
$203Southwest
Mon, Mar 23 - Thu, Mar 26
Frontier Logo
6:20 pm - 10:32 am
MCI
-
STL
16h 12m
1 stop
Frontier Logo
11:21 am - 4:23 pm
STL
-
MCI
29h 02m
1 stop
$226Frontier
Sun, Apr 12 - Sat, May 2
Frontier Logo
8:28 pm - 9:48 am
MCI
-
STL
13h 20m
1 stop
Frontier Logo
8:17 pm - 1:30 pm
STL
-
MCI
17h 13m
1 stop
$229Frontier
Sat, Apr 18 - Mon, Apr 20
American Airlines Logo
8:30 am - 2:03 pm
MCI
-
STL
5h 33m
1 stop
American Airlines Logo
7:05 am - 5:26 pm
STL
-
MCI
10h 21m
1 stop
$232American Airlines
Sat, Apr 4 - Wed, Apr 8
United Airlines Logo
8:00 am - 7:31 pm
COU
-
STL
11h 31m
1 stop
United Airlines Logo
7:45 am - 9:56 pm
STL
-
COU
14h 11m
1 stop
$381United Airlines
Sat, Apr 4 - Wed, Apr 8
United Airlines Logo
11:30 am - 9:08 pm
COU
-
STL
9h 38m
1 stop
United Airlines Logo
9:10 am - 9:56 pm
STL
-
COU
12h 46m
1 stop
$394United Airlines
Sun, Mar 22 - Sun, Mar 29
American Airlines Logo
6:30 pm - 2:07 pm
COU
-
STL
43h 37m
1 stop
American Airlines Logo
9:20 am - 8:19 pm
STL
-
COU
34h 59m
1 stop
$398American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$97
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 7% 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 4297 reviews
8.1Boarding
8.6Crew
8.0Comfort
7.5Entertainment
7.0Food
Airline reviews

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

10.0 ExcellentTy&Steph, Feb 2026
CLT - STL
Read more Southwest reviews

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Great plane, great attendants,great flight crew,on time. Wonderful flight home..

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

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