STL

$63 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 10/19. 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

Fri, Aug 21 - Sun, Aug 23
Frontier Logo
11:26 am - 5:22 pm
MCI
-
STL
5h 56m
1 stop
Frontier Logo
6:17 pm - 10:41 am
STL
-
MCI
16h 24m
1 stop
$141Frontier
Mon, Oct 26 - Thu, Oct 29
Frontier Logo
6:11 pm - 9:40 am
MCI
-
STL
15h 29m
1 stop
Frontier Logo
10:35 am - 3:17 pm
STL
-
MCI
28h 42m
1 stop
$150Frontier
Mon, Oct 26 - Thu, Oct 29
Multiple Airlines Logo
6:11 pm - 9:40 am
MCI
-
STL
15h 29m
1 stop
Multiple Airlines Logo
10:35 am - 10:06 am
STL
-
MCI
23h 31m
2 stops
$202Multiple Airlines
Thu, Aug 13 - Mon, Aug 17
Southwest Logo
12:15 pm - 1:15 pm
MCI
-
STL
1h 00mnonstop
Southwest Logo
2:20 pm - 3:25 pm
STL
-
MCI
1h 05mnonstop
$237Southwest
Thu, Aug 13 - Mon, Aug 17
Southwest Logo
5:10 am - 9:15 am
MCI
-
STL
4h 05m
1 stop
Southwest Logo
8:45 pm - 9:50 pm
STL
-
MCI
1h 05mnonstop
$247Southwest
Wed, Aug 19 - Tue, Aug 25
Multiple Airlines Logo
4:20 pm - 5:22 pm
TBN
-
STL
25h 02m
2 stops
Multiple Airlines Logo
5:27 pm - 11:50 am
STL
-
TBN
18h 23m
1 stop
$355Multiple Airlines
Tue, Dec 8 - Thu, Dec 10
American Airlines Logo
6:24 pm - 10:51 am
COU
-
STL
16h 27m
1 stop
American Airlines Logo
7:29 am - 9:58 am
STL
-
COU
50h 29m
1 stop
$422American Airlines
Wed, Dec 9 - Sat, Dec 12
United Airlines Logo
5:00 am - 3:41 pm
COU
-
STL
10h 41m
1 stop
United Airlines Logo
7:04 pm - 5:23 pm
STL
-
COU
22h 19m
1 stop
$464United Airlines
Wed, Dec 9 - Sat, Dec 12
United Airlines Logo
5:00 am - 3:41 pm
COU
-
STL
10h 41m
1 stop
United Airlines Logo
7:04 pm - 5:23 pm
STL
-
COU
22h 19m
1 stop
$474United Airlines
Sun, Aug 16 - Sun, Aug 23
American Airlines Logo
6:41 pm - 8:24 am
COU
-
STL
37h 43m
1 stop
American Airlines Logo
8:07 pm - 6:03 pm
STL
-
COU
21h 56m
1 stop
$493American Airlines
Useful Info

Good to know

Low season

January

Cheapest flight

$63
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 9% increase in price.
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 4238 reviews
8.6Crew
8.1Boarding
7.0Food
8.0Comfort
7.5Entertainment
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