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 7/24. 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, Jul 15 - Tue, Jul 21
Frontier Logo
6:07 pm - 5:37 pm
MCI
-
STL
23h 30m
1 stop
Frontier Logo
6:34 pm - 5:10 pm
STL
-
MCI
22h 36m
1 stop
$166Frontier
Wed, Jul 15 - Tue, Jul 21
Frontier Logo
6:07 pm - 5:37 pm
MCI
-
STL
23h 30m
1 stop
Frontier Logo
6:34 pm - 5:10 pm
STL
-
MCI
22h 36m
1 stop
$167Frontier
Fri, Jul 31 - Fri, Aug 7
Frontier Logo
6:07 pm - 8:57 am
MCI
-
STL
14h 50m
1 stop
Frontier Logo
4:57 pm - 5:10 pm
STL
-
MCI
24h 13m
1 stop
$178Frontier
Wed, Jul 15 - Wed, Jul 22
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
$196Frontier
Fri, Aug 7 - Mon, Aug 10
Frontier Logo
6:07 pm - 8:57 am
MCI
-
STL
14h 50m
1 stop
Frontier Logo
8:08 pm - 1:00 pm
STL
-
MCI
16h 52m
1 stop
$204Frontier
Wed, Jul 8 - Tue, Jul 14
American Airlines Logo
6:20 am - 12:16 am
COU
-
STL
17h 56m
1 stop
American Airlines Logo
6:55 am - 6:01 pm
STL
-
COU
35h 06m
1 stop
$476American Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
6:15 am - 10:00 pm
COU
-
STL
15h 45m
1 stop
United Airlines Logo
8:50 am - 10:55 pm
STL
-
COU
14h 05m
1 stop
$484United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
6:15 am - 5:06 pm
COU
-
STL
10h 51m
1 stop
United Airlines Logo
7:25 am - 10:55 pm
STL
-
COU
15h 30m
1 stop
$519United Airlines
Sun, Jul 5 - Thu, Jul 9
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
$524Multiple Airlines
Wed, Jul 8 - Tue, Jul 14
American Airlines Logo
6:32 pm - 8:31 am
COU
-
STL
37h 59m
1 stop
American Airlines Logo
9:08 am - 9:01 pm
STL
-
COU
11h 53m
1 stop
$601American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$81
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 4242 reviews
7.0Food
7.5Entertainment
8.1Boarding
8.0Comfort
8.6Crew
Airline reviews

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

6.0 GoodSteven, Jun 2026
LAS - ONT
Read more Southwest reviews

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

Flight was constantly delayed with significant changes in time, it was supposed to get to Colorado Springs at 8:30 PM but it got there after midnight.

Over a 3 hour flight. The turbulence was almost imperceptible except for 2 short periods which were not bad and over quickly. The attendants claimed "Safety first" and sat looking at their phones for 3 hours with no drink or snack service. This isn't the first time with Southwest. I thinkit may be there new plan of operation. Oh, and it was June 18, Southwest's Birthday which offered free drinks. NOT.

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

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