STL

$81 Find Cheap Flights from Missouri to St. Louis - Compare and Save

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 7/27. 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, Sep 23 - Fri, Sep 25
Frontier Logo
6:11 pm - 9:40 am
MCI
-
STL
15h 29m
1 stop
Frontier Logo
10:35 am - 5:16 pm
STL
-
MCI
6h 41m
1 stop
$179Frontier
Sat, Jul 18 - Fri, Sep 18
Frontier Logo
6:07 pm - 5:37 pm
MCI
-
STL
23h 30m
1 stop
Frontier Logo
10:35 am - 5:16 pm
STL
-
MCI
6h 41m
1 stop
$190Frontier
Wed, Jul 22 - Wed, Jul 29
Frontier Logo
6:07 pm - 5:37 pm
MCI
-
STL
23h 30m
1 stop
Frontier Logo
7:03 pm - 3:47 pm
STL
-
MCI
20h 44m
1 stop
$203Frontier
Fri, Jul 10 - Thu, Jul 16
Frontier Logo
6:07 pm - 8:57 am
MCI
-
STL
14h 50m
1 stop
Frontier Logo
6:34 pm - 5:10 pm
STL
-
MCI
22h 36m
1 stop
$223Frontier
Fri, Aug 21 - Tue, Aug 25
American Airlines Logo
6:35 pm - 8:24 am
COU
-
STL
13h 49m
1 stop
American Airlines Logo
8:07 pm - 12:13 pm
STL
-
COU
40h 06m
1 stop
$344American Airlines
Sun, Jul 19 - Sun, Jul 26
Multiple Airlines Logo
12:10 pm - 1:21 pm
TBN
-
STL
25h 11m
2 stops
Multiple Airlines Logo
3:41 pm - 11:40 am
STL
-
TBN
19h 59m
1 stop
$427Multiple Airlines
Fri, Jul 10 - Tue, Jul 14
Multiple Airlines Logo
4:10 pm - 2:56 pm
TBN
-
STL
22h 46m
1 stop
Multiple Airlines Logo
3:41 pm - 11:40 am
STL
-
TBN
19h 59m
1 stop
$460Multiple Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
6:15 am - 10:59 pm
COU
-
STL
16h 44m
1 stop
United Airlines Logo
9:30 am - 10:16 am
STL
-
COU
24h 46m
1 stop
$484United Airlines
Wed, Dec 9 - Sat, Dec 12
United Airlines Logo
3:16 pm - 12:06 pm
COU
-
STL
20h 50m
1 stop
United Airlines Logo
7:04 pm - 5:23 pm
STL
-
COU
22h 19m
1 stop
$514United Airlines
Fri, Jul 24 - Fri, Jul 31
American Airlines Logo
6:32 pm - 12:15 am
COU
-
STL
29h 43m
1 stop
American Airlines Logo
6:16 pm - 5:52 pm
STL
-
COU
23h 36m
1 stop
$564American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$81
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 4246 reviews
8.6Crew
7.5Entertainment
7.0Food
8.1Boarding
8.0Comfort
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.

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!!

Everything went smoothly and we even arrived a little bit early.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

Southwest's seats are the least comfortable I have ever sat in.

For my birthday trip this was my second time ever flying, this trip was the best.

Crew was great flight was great baggage claim was a failure. It took over 1 hour for bags to arrive. Poor communication poor effort when I spoke to the supervisor about the delay

Everything was great except the food. The pretzels are really crappy.

I had a front row middle. I am not a big person and I barely fit in between that seat! No place to put my arms, even though the guys on each side were not taking over the arm rests. It felt like a frontier flight (if that tells you everything )

Overall is was a pretty good flight. However we were 15 mins late taking off and no one told us anything. We were all in our seats just sitting there for 15mins and all the sudden the pilot stayed we are leaving now. I think they should have at least said something after our take off time passed. Everyone was wondering what was going on. I will say the pilot did increase the speed of the plane so we arrived in time. So we weren't late.

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