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 5/7. 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

Thu, Apr 2 - Sat, Apr 4
Southwest Logo
5:35 pm - 6:40 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
8:25 am - 9:35 am
STL
-
MCI
1h 10mnonstop
$193Southwest
Thu, Apr 2 - Thu, Apr 9
Southwest Logo
5:35 pm - 6:40 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
3:45 pm - 10:10 pm
STL
-
MCI
6h 25m
1 stop
$203Southwest
Fri, Apr 24 - Tue, Apr 28
Southwest Logo
5:50 pm - 6:55 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
8:55 pm - 10:00 pm
STL
-
MCI
1h 05mnonstop
$205Southwest
Thu, Apr 2 - Thu, Apr 9
Southwest Logo
5:00 am - 9:35 am
MCI
-
STL
4h 35m
1 stop
Southwest Logo
5:40 am - 9:20 am
STL
-
MCI
3h 40m
1 stop
$213Southwest
Fri, Apr 24 - Tue, Apr 28
Southwest Logo
5:50 pm - 6:55 pm
MCI
-
STL
1h 05mnonstop
Southwest Logo
8:25 am - 2:10 pm
STL
-
MCI
5h 45m
1 stop
$215Southwest
Thu, Apr 2 - Thu, Apr 9
Frontier Logo
8:46 pm - 9:48 am
MCI
-
STL
13h 02m
1 stop
Frontier Logo
6:29 pm - 7:58 pm
STL
-
MCI
49h 29m
2 stops
$238Frontier
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 - 9:30 pm
STL
-
COU
15h 39m
1 stop
$358American Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
8:00 am - 10:45 am
COU
-
STL
26h 45m
1 stop
United Airlines Logo
6:30 am - 10:01 pm
STL
-
COU
15h 31m
1 stop
$441United Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
8:00 am - 10:45 am
COU
-
STL
26h 45m
1 stop
United Airlines Logo
9:10 am - 10:55 am
STL
-
COU
25h 45m
1 stop
$464United 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 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 4313 reviews
8.6Crew
8.0Comfort
7.0Food
8.1Boarding
7.5Entertainment
Airline reviews

I elected to pay for the upgrades and found very little difference

6.0 GoodChris, Mar 2026
DAL - SAT
Read more Southwest reviews

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

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.

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