STL

$49 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 9/8. 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

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Flights 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

Sat, Sep 6 - Mon, Sep 8
Southwest Logo
8:35 am - 9:40 amMCI-STL
1h 05mnonstop
Southwest Logo
9:50 am - 10:55 amSTL-MCI
1h 05mnonstop
$124Southwest
Find Deal
Sat, Sep 6 - Mon, Sep 8
Southwest Logo
8:35 am - 9:40 amMCI-STL
1h 05mnonstop
Southwest Logo
6:50 pm - 10:35 pmSTL-MCI
3h 45m1 stop
$134Southwest
Find Deal
Thu, Jul 10 - Thu, Jul 17
Spirit Airlines Logo
10:30 am - 9:52 amMCI-STL
23h 22m1 stop
Spirit Airlines Logo
10:47 am - 1:37 pmSTL-MCI
26h 50m2 stops
$257Spirit Airlines
Find Deal
Thu, Jul 10 - Thu, Jul 17
Spirit Airlines Logo
10:30 am - 9:52 amMCI-STL
23h 22m1 stop
Spirit Airlines Logo
10:47 am - 5:09 pmSTL-MCI
30h 22m3 stops
$286Spirit Airlines
Find Deal
Fri, Aug 1 - Sun, Aug 3
Frontier Logo
11:20 am - 1:59 pmMCI-STL
26h 39m1 stop
Frontier Logo
2:36 pm - 10:21 amSTL-MCI
19h 45m1 stop
$298Frontier
Find Deal
Fri, Jul 25 - Sun, Jul 27
Frontier Logo
11:20 am - 1:59 pmMCI-STL
26h 39m1 stop
Frontier Logo
2:36 pm - 10:21 amSTL-MCI
19h 45m1 stop
$322Frontier
Find Deal
Fri, Jul 4 - Mon, Jul 7
Logo
11:00 am - 6:41 pmMCI-STL
7h 41m2 stops
Logo
7:13 pm - 6:55 pmSTL-MCI
23h 42m2 stops
$337
Find Deal
Fri, Jul 4 - Mon, Jul 7
Logo
11:00 am - 6:41 pmMCI-STL
7h 41m2 stops
Logo
7:13 pm - 1:37 pmSTL-MCI
42h 24m3 stops
$376
Find Deal
Fri, Aug 8 - Sun, Aug 10
American Airlines Logo
7:17 pm - 8:20 amCOU-STL
13h 03m1 stop
American Airlines Logo
6:00 am - 11:19 amSTL-COU
29h 19m1 stop
$512American Airlines
Find Deal
Mon, Jul 21 - Tue, Jul 22
American Airlines Logo
4:59 pm - 11:51 pmMCI-STL
6h 52m1 stop
American Airlines Logo
5:30 am - 9:53 amSTL-MCI
4h 23m1 stop
$521American Airlines
Find Deal
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Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$49
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 8% 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.

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 4287 reviews
7.1Food
8.2Boarding
8.0Comfort
7.6Entertainment
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

St. Louis (STL)

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