STL

$80 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 4/30. 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

Tue, Mar 31 - Tue, Apr 7
Southwest Logo
4:50 pm - 5:55 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
8:55 pm - 10:00 pm
STL
-
MCI
1h 05mnonstop
$177Southwest
Tue, Mar 31 - Tue, Apr 7
Southwest Logo
4:05 pm - 10:20 pm
MCI
-
STL
6h 15m
1 stop
Southwest Logo
1:25 pm - 2:35 pm
STL
-
MCI
1h 10mnonstop
$187Southwest
Mon, Apr 20 - Fri, Apr 24
Frontier Logo
2:15 pm - 7:32 pm
MCI
-
STL
5h 17m
1 stop
Frontier Logo
8:06 pm - 2:06 pm
STL
-
MCI
18h 00m
1 stop
$192Frontier
Thu, Mar 26 - Mon, Mar 30
Southwest Logo
12:40 pm - 1:45 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
9:40 pm - 10:50 pm
STL
-
MCI
1h 10mnonstop
$193Southwest
Tue, Mar 31 - Tue, Apr 7
United Airlines Logo
5:00 pm - 9:08 pm
MCI
-
STL
4h 08m
1 stop
United Airlines Logo
6:30 am - 10:27 am
STL
-
MCI
3h 57m
1 stop
$197United Airlines
Thu, Mar 26 - Mon, Mar 30
Southwest Logo
6:55 pm - 11:10 pm
MCI
-
STL
4h 15m
1 stop
Southwest Logo
9:40 pm - 10:50 pm
STL
-
MCI
1h 10mnonstop
$203Southwest
Tue, Mar 24 - Fri, Mar 27
Southwest Logo
11:05 am - 12:10 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
9:40 pm - 10:50 pm
STL
-
MCI
1h 10mnonstop
$213Southwest
Wed, Apr 1 - Wed, Apr 8
American Airlines Logo
6:00 am - 1:39 pm
COU
-
STL
7h 39m
1 stop
American Airlines Logo
7:05 am - 3:58 pm
STL
-
COU
8h 53m
1 stop
$304American Airlines
Thu, Apr 2 - Thu, Apr 9
American Airlines Logo
6:00 am - 1:43 pm
COU
-
STL
7h 43m
1 stop
American Airlines Logo
5:51 am - 3:58 pm
STL
-
COU
10h 07m
1 stop
$378American Airlines
Sat, Apr 4 - Wed, Apr 8
United Airlines Logo
11:30 am - 9:13 pm
COU
-
STL
9h 43m
1 stop
United Airlines Logo
7:45 am - 10:01 pm
STL
-
COU
14h 16m
1 stop
$421United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$80
Best time to beat the crowds but there is an average 8% 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 4308 reviews
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
8.1Boarding
Airline reviews

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

4.0 OkayEmma, Mar 2026
LAX - PHX
Read more Southwest reviews

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

Mediocre. Boarding is now unpleasant. The employees, once friendly and nice, are now regularly speaking sternly to passengers, badgering them to do things right so they can take off on time and gate check bags because they don't have enough overhead bin space. The pretzel snack was crushed flat and broken into even smaller pieces, which happens frequently lately. Drink service was suspended before they reached my row.

The last 3 flights between BWI and BDL canceled the beverage service mid- way. Just say up front that the fight is too short. Thanks!

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

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.

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