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Cheap flights from Kansas City to St. Louis from $59

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kansas City to St. Louis departing on 3/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Kansas City to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Kansas City to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.
4:50 pm - 5:50 pmMCI-STL
1h 00mnonstop
1:55 pm - 3:00 pmSTL-MCI
1h 05mnonstop
$117Southwest
Find Deal
mar., may. 13 - jue., may. 15
7:40 am - 1:25 pmMCI-STL
5h 45m1 stop
1:55 pm - 3:00 pmSTL-MCI
1h 05mnonstop
$127Southwest
Find Deal
mar., may. 13 - jue., may. 15
3:55 pm - 10:25 pmMCI-STL
6h 30m1 stop
5:35 am - 9:15 amSTL-MCI
3h 40m1 stop
$152Southwest
Find Deal
mar., may. 13 - jue., may. 15
2:30 pm - 11:37 amMCI-STL
21h 07m1 stop
6:51 pm - 7:37 pmSTL-MCI
24h 46m1 stop
$206Frontier
Find Deal
sáb., abr. 5 - sáb., abr. 12
5:50 am - 6:55 amMCI-STL
1h 05mnonstop
5:20 am - 10:25 amSTL-MCI
5h 05m1 stop
$224Southwest
Find Deal
mié., may. 21 - jue., may. 22
10:24 am - 4:41 pmMCI-STL
6h 17m1 stop
6:29 pm - 10:30 pmSTL-MCI
4h 01m1 stop
$233American Airlines
Find Deal
mié., mar. 19 - mié., mar. 26
4:39 pm - 9:09 amMCI-STL
16h 30m1 stop
7:04 pm - 6:35 pmSTL-MCI
23h 31m1 stop
vie., mar. 7 - sáb., mar. 8
6:43 pm - 11:45 amMCI-STL
41h 02m3 stops
7:37 pm - 6:27 pmSTL-MCI
22h 50m1 stop
mar., may. 13 - jue., may. 15
10:20 am - 9:09 amMCI-STL
22h 49m2 stops
5:38 pm - 3:44 pmSTL-MCI
22h 06m1 stop
$424Spirit Airlines
Find Deal
vie., mar. 14 - dom., mar. 16
6:18 pm - 10:27 pmMCI-STL
4h 09m1 stop
6:10 pm - 10:17 pmSTL-MCI
4h 07m1 stop
$483American Airlines
Find Deal
vie., jun. 27 - lun., jun. 30

Southwest flights from Kansas City to St. Louis

Our best Southwest deals on Kansas City to St. Louis flight tickets
Southwest
May 13
MCI4:50 pmKansas City
1h 00m
STL5:50 pmLambert-St Louis
May 15
STL1:55 pmLambert-St Louis
1h 05m
MCI3:00 pmKansas City
Southwest
May 13
MCI7:40 amKansas City
5h 45m
1 stop
STL1:25 pmLambert-St Louis
May 15
STL1:55 pmLambert-St Louis
1h 05m
MCI3:00 pmKansas City
Southwest
May 13
MCI3:55 pmKansas City
6h 30m
1 stop
STL10:25 pmLambert-St Louis
May 15
STL5:35 amLambert-St Louis
3h 40m
1 stop
MCI9:15 amKansas City

American Airlines flights from Kansas City to St. Louis

Our best American Airlines deals on Kansas City to St. Louis flight tickets
American Airlines
Mar 19
MCI10:24 amKansas City
6h 17m
1 stop
STL4:41 pmLambert-St Louis
Mar 26
STL6:29 pmLambert-St Louis
4h 01m
1 stop
MCI10:30 pmKansas City
American Airlines
Feb 24
MCI5:35 amKansas City
4h 17m
1 stop
STL9:52 amLambert-St Louis
Feb 24
STL11:04 amLambert-St Louis
6h 40m
1 stop
MCI5:44 pmKansas City
American Airlines
Feb 24
MCI3:25 pmKansas City
7h 18m
1 stop
STL10:43 pmLambert-St Louis
Feb 26
STL7:04 amLambert-St Louis
7h 39m
1 stop
MCI2:43 pmKansas City

See travel insights to St. Louis from

How to get the cheapest flight ticket from Kansas City to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Kansas City and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, January is the cheapest month to fly from Kansas City to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $208. The month of March is another great option to travel to St. Louis, with average flight prices from Kansas City averaging around $257.

What is the cheapest Kansas City to Lambert-St Louis flight route?

Fly from Kansas City to Lambert-St Louis for the best Kansas City - Lambert-St Louis flight prices

What cabin class options are available on Kansas City to Lambert-St Louis flights?

There are 1 cabin classes available to choose from on Kansas City to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Kansas City to St. Louis flight prices changed over time?

As of February 2025, prices for Kansas City to St. Louis flights are approximately 226% more expensive when compared to flights at the same time last year.

When to book flights from Kansas City to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Kansas City to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Kansas City to St. Louis (MCI to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kansas City to St. Louis

Best Price Found

$59

Fastest flight time

1h 00m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sat

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Kansas City in the past 72 hours is $59. The best round-trip flight deal from Kansas City to St. Louis found on momondo in the last 72 hours is $117.
The fastest flight from Kansas City to St. Louis takes 1h 00m
Direct flights go from Kansas City to St. Louis on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. The only airline offering direct flights is Southwest.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Kansas City to Lambert-St Louis by plane?

    The straight-line distance from Kansas City to Lambert-St Louis is 237.1 mi. 1h 00m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Kansas City Airport to Lambert-St Louis Airport?

    Prices for flights from Kansas City Airport to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Kansas City Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Kansas City Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Kansas City Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Kansas City to St. Louis?

  • What is the most popular airline from Kansas City to St. Louis?


Best airlines flying from Kansas City to St. Louis

Compare and see reviews for airlines that fly from Kansas City to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $152Free CancellationRating
8.1
4,411 reviews
Search Southwest flights
American AirlinesPriceFrom $247Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Southwest Flights From Kansas City to St. Louis

    Across 10 Southwest flights from Kansas City to St. Louis this week, the average price was $418, with the best Southwest deals starting from $152 round-trip. 4,411 users have rated Southwest on momondo, with an average score of 8.1/10.


Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Collinsville
Florissant
Maryland Heights
Hermann
Fairview Heights
Fenton
O'Fallon
Farmington
Alton
St. Peters
Wentzville
Eureka
Festus
Glencoe
Clayton
Edwardsville
Litchfield
Grafton

Why use momondo?

Why should I use momondo to find a flight deal from Kansas City to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Kansas City to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Kansas City to St. Louis with flexible booking policies on momondo?

Flights from Kansas City to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Kansas City to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Kansas City.

I’m not ready to book a flight from Kansas City to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Kansas City and alert you when they change.


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