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 9/11. 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, Jul 10 - Sun, Jul 12
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
$167Frontier
Thu, Aug 20 - Sun, Aug 30
Frontier Logo
1:50 pm - 7:36 pm
MCI
-
STL
29h 46m
1 stop
Frontier Logo
6:33 pm - 5:24 pm
STL
-
MCI
22h 51m
1 stop
$205Frontier
Tue, Jul 14 - Thu, Jul 16
Frontier Logo
1:45 pm - 7:23 pm
MCI
-
STL
5h 38m
1 stop
Frontier Logo
6:34 pm - 5:10 pm
STL
-
MCI
22h 36m
1 stop
$227Frontier
Tue, Jul 14 - Wed, Jul 15
Frontier Logo
1:45 pm - 7:23 pm
MCI
-
STL
5h 38m
1 stop
Frontier Logo
7:03 pm - 3:47 pm
STL
-
MCI
20h 44m
1 stop
$238Frontier
Wed, Sep 9 - Thu, Sep 10
Frontier Logo
6:11 pm - 9:40 am
MCI
-
STL
15h 29m
1 stop
Frontier Logo
6:41 pm - 5:16 pm
STL
-
MCI
22h 35m
2 stops
$250Frontier
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
$336American Airlines
Mon, Jul 13 - Mon, Jul 20
Multiple Airlines Logo
4:10 pm - 2:56 pm
TBN
-
STL
22h 46m
1 stop
Multiple Airlines Logo
4:57 pm - 11:40 am
STL
-
TBN
42h 43m
2 stops
$394Multiple Airlines
Sat, Oct 24 - Sat, Nov 7
American Airlines Logo
6:01 am - 1:03 pm
COU
-
STL
7h 02m
1 stop
American Airlines Logo
8:40 am - 9:55 pm
STL
-
COU
13h 15m
1 stop
$422American 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
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
5:00 am - 2:18 pm
COU
-
STL
9h 18m
1 stop
United Airlines Logo
8:15 pm - 9:20 pm
STL
-
COU
25h 05m
1 stop
$605United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$81
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 2% 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 4237 reviews
8.1Boarding
7.0Food
8.6Crew
8.0Comfort
7.5Entertainment
Airline reviews

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

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

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!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

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

St. Louis (STL)