STL

$80 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 2/27. 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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Everything you should know

Cheapest round-trip
$195
Overall average: $355
Southwest
Wed 4/29Mon 5/4
MCI - STL • 1 stop
Cheapest non-stop
$262
Typical prices: $156-$667
Southwest
Wed 4/29Mon 5/4
MCI - STL • Non-stop
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Flight Deals
Useful Info
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, Apr 29 - Mon, May 4
Southwest Logo
8:00 am - 1:25 pm
MCI
-
STL
5h 25m
1 stop
Southwest Logo
3:50 pm - 5:00 pm
STL
-
MCI
1h 10mnonstop
$195Southwest
Mon, May 4 - Thu, May 7
Southwest Logo
5:50 pm - 10:40 pm
MCI
-
STL
4h 50m
1 stop
Southwest Logo
8:30 am - 9:40 am
STL
-
MCI
1h 10mnonstop
$203Southwest
Mon, May 4 - Thu, May 7
Frontier Logo
2:15 pm - 7:12 pm
MCI
-
STL
4h 57m
1 stop
Frontier Logo
8:12 pm - 1:30 pm
STL
-
MCI
17h 18m
1 stop
$213Frontier
Tue, Feb 17 - Sat, Feb 21
Multiple Airlines Logo
4:24 pm - 10:27 pm
MCI
-
STL
30h 03m
1 stop
Multiple Airlines Logo
8:17 pm - 9:29 am
STL
-
MCI
13h 12m
1 stop
$217Multiple Airlines
Tue, Feb 17 - Sat, Feb 21
Multiple Airlines Logo
4:24 pm - 6:51 am
MCI
-
STL
14h 27m
2 stops
Multiple Airlines Logo
8:17 pm - 9:29 am
STL
-
MCI
13h 12m
1 stop
$224Multiple Airlines
Wed, Feb 25 - Sat, Feb 28
Frontier Logo
4:39 pm - 11:59 pm
MCI
-
STL
31h 20m
2 stops
Frontier Logo
8:17 pm - 9:58 am
STL
-
MCI
13h 41m
1 stop
$263Frontier
Fri, Apr 24 - Mon, Apr 27
American Airlines Logo
4:28 pm - 10:17 pm
COU
-
STL
29h 49m
1 stop
American Airlines Logo
7:05 am - 9:43 am
STL
-
COU
26h 38m
1 stop
$343American Airlines
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
11:15 am - 9:05 pm
COU
-
STL
9h 50m
1 stop
United Airlines Logo
7:41 am - 9:33 pm
STL
-
COU
13h 52m
1 stop
$400United Airlines
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
8:00 am - 10:36 am
COU
-
STL
26h 36m
1 stop
United Airlines Logo
7:41 am - 9:33 pm
STL
-
COU
13h 52m
1 stop
$539United Airlines
Mon, Feb 16 - Fri, Feb 20
American Airlines Logo
10:08 am - 5:58 pm
COU
-
STL
31h 50m
1 stop
American Airlines Logo
6:36 pm - 9:30 am
STL
-
COU
38h 54m
1 stop
$599American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$80
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 5% 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.
8.0
SouthwestOverall score based on 4272 reviews
8.6Crew
8.0Comfort
8.1Boarding
7.5Entertainment
7.0Food
Airline reviews

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

10.0 ExcellentMeghan, Feb 2026
MCO - DEN
Read more Southwest reviews

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

Flight attendants very hospitable and friendly. Pilot flew a smooth take off and landing.

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

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

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

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)