STL

$67 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 1/9. 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
$137
Overall average: $319
Southwest
Tue 1/6Wed 1/7
MCI - STL • 1 stop
Cheapest non-stop
$171
Typical prices: $287-$352
Southwest
Wed 1/14Sat 1/17
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, Jan 6 - Wed, Jan 7
Southwest Logo
2:25 pm - 6:45 pm
MCI
-
STL
4h 20m1 stop
Southwest Logo
1:05 pm - 7:20 pm
STL
-
MCI
6h 15m1 stop
$137Southwest
Tue, Jan 6 - Wed, Jan 7
Southwest Logo
3:10 pm - 9:00 pm
MCI
-
STL
5h 50m1 stop
Southwest Logo
10:15 am - 5:00 pm
STL
-
MCI
6h 45m2 stops
$142Southwest
Fri, Jan 9 - Sun, Jan 11
Frontier Logo
8:31 pm - 10:02 am
MCI
-
STL
13h 31m1 stop
Frontier Logo
3:43 pm - 10:09 am
STL
-
MCI
18h 26m1 stop
$176Frontier
Fri, Jan 9 - Sun, Jan 11
Frontier Logo
8:31 pm - 10:02 am
MCI
-
STL
13h 31m1 stop
Frontier Logo
5:11 pm - 10:09 am
STL
-
MCI
16h 58m2 stops
$201Frontier
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
11:15 am - 10:59 pm
COU
-
STL
11h 44m1 stop
United Airlines Logo
7:41 am - 10:33 am
STL
-
COU
26h 52m1 stop
$432United Airlines
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
11:15 am - 9:00 pm
COU
-
STL
9h 45m1 stop
United Airlines Logo
9:55 am - 10:33 am
STL
-
COU
24h 38m1 stop
$459United Airlines
Wed, Dec 24 - Sun, Dec 28
American Airlines Logo
7:35 am - 8:35 am
COU
-
STL
25h 00m1 stop
American Airlines Logo
8:01 pm - 2:49 pm
STL
-
COU
42h 48m1 stop
$500American Airlines
Fri, Dec 26 - Tue, Dec 30
American Airlines Logo
7:35 am - 8:35 am
COU
-
STL
25h 00m1 stop
American Airlines Logo
8:01 pm - 7:12 pm
STL
-
COU
23h 11m1 stop
$602American Airlines
Wed, Dec 24 - Sun, Dec 28
Multiple Airlines Logo
2:30 pm - 10:56 am
TBN
-
STL
20h 26m3 stops
Multiple Airlines Logo
11:51 am - 11:50 am
STL
-
TBN
23h 59m2 stops
$724Multiple Airlines
Wed, Dec 24 - Sun, Dec 28
Multiple Airlines Logo
2:30 pm - 10:56 am
TBN
-
STL
20h 26m2 stops
Multiple Airlines Logo
11:51 am - 11:50 am
STL
-
TBN
23h 59m2 stops
$743Multiple Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$67
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 1% 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.
7.9
SouthwestOverall score based on 4252 reviews
8.6Crew
7.5Entertainment
8.1Boarding
7.0Food
8.0Comfort
Airline reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

8.0 ExcellentRussell, Dec 2025
SAN - OAK
Read more Southwest reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

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