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Cheap flights from St. Louis to Kansas City from $72

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Kansas City departing on 1/24. 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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Cheap round-trip flights

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Frontier Logo
7:43 pm - 7:26 pmSTL-MCI
23h 43m1 stop
Frontier Logo
8:27 pm - 2:48 pmMCI-STL
18h 21m1 stop
$133Frontier
Find Deal
Wed, Jan 7 - Fri, Jan 16
Frontier Logo
7:43 pm - 7:26 pmSTL-MCI
23h 43m1 stop
Frontier Logo
8:27 pm - 2:48 pmMCI-STL
18h 21m1 stop
$134Frontier
Find Deal
Wed, Jan 7 - Fri, Jan 16
Frontier Logo
7:43 pm - 7:26 pmSTL-MCI
23h 43m1 stop
Frontier Logo
8:23 pm - 10:02 amMCI-STL
13h 39m1 stop
$137Frontier
Find Deal
Wed, Jan 7 - Sun, Jan 11
Frontier Logo
7:43 pm - 7:26 pmSTL-MCI
23h 43m1 stop
Frontier Logo
8:27 pm - 2:48 pmMCI-STL
18h 21m1 stop
$138Frontier
Find Deal
Wed, Jan 7 - Fri, Jan 16
Frontier Logo
7:43 pm - 7:26 pmSTL-MCI
23h 43m1 stop
Frontier Logo
8:27 pm - 2:48 pmMCI-STL
18h 21m1 stop
$139Frontier
Find Deal
Wed, Jan 7 - Fri, Jan 16
Multiple Airlines Logo
5:11 pm - 10:59 pmSTL-MCI
29h 48m1 stop
Multiple Airlines Logo
8:27 pm - 2:48 pmMCI-STL
18h 21m1 stop
$152Multiple Airlines
Find Deal
Tue, Jan 6 - Fri, Jan 16
Multiple Airlines Logo
5:11 pm - 3:33 pmSTL-MCI
22h 22m1 stop
Multiple Airlines Logo
8:23 pm - 10:02 amMCI-STL
13h 39m1 stop
$153Multiple Airlines
Find Deal
Thu, Jan 8 - Sun, Jan 11
Frontier Logo
7:43 pm - 7:26 pmSTL-MCI
23h 43m1 stop
Frontier Logo
8:27 pm - 6:32 pmMCI-STL
22h 05m1 stop
$154Frontier
Find Deal
Wed, Jan 7 - Thu, Jan 15
Frontier Logo
7:43 pm - 7:26 pmSTL-MCI
23h 43m1 stop
Frontier Logo
8:33 pm - 6:32 pmMCI-STL
21h 59m1 stop
$155Frontier
Find Deal
Wed, Jan 7 - Thu, Jan 15
Multiple Airlines Logo
5:11 pm - 10:59 pmSTL-MCI
29h 48m1 stop
Multiple Airlines Logo
8:27 pm - 2:48 pmMCI-STL
18h 21m1 stop
$156Multiple Airlines
Find Deal
Tue, Jan 6 - Fri, Jan 16

United Airlines flights from St. Louis to Kansas City

Our best United Airlines deals on St. Louis to Kansas City flight tickets
United Airlines
Dec 10
STL8:30 amLambert-St Louis
13h 28m
2 stops
MCI9:58 pmKansas City
Dec 14
MCI6:00 amKansas City
10h 28m
1 stop
STL4:28 pmLambert-St Louis
$698
Find similar
United Airlines
Dec 8
STL9:00 amLambert-St Louis
11h 47m
1 stop
MCI8:47 pmKansas City
Dec 12
MCI5:10 pmKansas City
19h 29m
1 stop
STL12:39 pmLambert-St Louis
$708
Find similar
United Airlines
Dec 8
STL1:35 pmLambert-St Louis
9h 32m
1 stop
MCI11:07 pmKansas City
Dec 12
MCI6:00 amKansas City
8h 23m
2 stops
STL2:23 pmLambert-St Louis
$843
Find similar

Frontier flights from St. Louis to Kansas City

Our best Frontier deals on St. Louis to Kansas City flight tickets
Frontier
Jan 7
STL7:43 pmLambert-St Louis
23h 43m
1 stop
MCI7:26 pmKansas City
Jan 16
MCI8:27 pmKansas City
18h 21m
1 stop
STL2:48 pmLambert-St Louis
$133
Find similar
Frontier
Jan 7
STL7:43 pmLambert-St Louis
23h 43m
1 stop
MCI7:26 pmKansas City
Jan 16
MCI8:27 pmKansas City
18h 21m
1 stop
STL2:48 pmLambert-St Louis
$134
Find similar
Frontier
Jan 7
STL7:43 pmLambert-St Louis
23h 43m
1 stop
MCI7:26 pmKansas City
Jan 11
MCI8:23 pmKansas City
13h 39m
1 stop
STL10:02 amLambert-St Louis
$137
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Kansas City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 26, 2025.
Use the filters below to find and compare flights from St. Louis to Kansas City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

7:43 pm-7:26 pm

1 stop23h 43m

Kansas City

Fri 1/16

8:27 pm-2:48 pm

1 stop18h 21m

$133

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

7:43 pm-7:26 pm

1 stop23h 43m

Kansas City

Fri 1/16

8:27 pm-2:48 pm

1 stop18h 21m

$134

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

7:43 pm-7:26 pm

1 stop23h 43m

Kansas City

Sun 1/11

8:23 pm-10:02 am

1 stop13h 39m

$137

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

7:43 pm-7:26 pm

1 stop23h 43m

Kansas City

Fri 1/16

8:27 pm-2:48 pm

1 stop18h 21m

$138

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

7:43 pm-7:26 pm

1 stop23h 43m

Kansas City

Fri 1/16

8:27 pm-2:48 pm

1 stop18h 21m

$139

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 1/6

5:11 pm-10:59 pm

1 stop29h 48m

Kansas City

Fri 1/16

8:27 pm-2:48 pm

1 stop18h 21m

$152

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 1/8

5:11 pm-3:33 pm

1 stop22h 22m

Kansas City

Sun 1/11

8:23 pm-10:02 am

1 stop13h 39m

$153

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

7:43 pm-7:26 pm

1 stop23h 43m

Kansas City

Thu 1/15

8:27 pm-6:32 pm

1 stop22h 05m

$154

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

7:43 pm-7:26 pm

1 stop23h 43m

Kansas City

Thu 1/15

8:33 pm-6:32 pm

1 stop21h 59m

$155

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 1/6

5:11 pm-10:59 pm

1 stop29h 48m

Kansas City

Fri 1/16

8:27 pm-2:48 pm

1 stop18h 21m

$156

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Kansas City from

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

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 cheapest month to fly to Kansas City?

In general, March is the cheapest month to fly from St. Louis to Kansas City. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $132. If you’re not able to fly to Kansas City in March, then June is your next best option. Flight prices from St. Louis to Kansas City during June average around $214.

What is the cheapest day to depart on your flight to Kansas City?

The cheapest day to depart on your flight to Kansas City is on a Saturday when prices can be found for as low as $335. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Kansas City on a Wednesday will generally be more expensive and average around $489. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Kansas City?

Flying to Kansas City from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $339 when looking at flights departing in the afternoon. Try not to purchase tickets at noon because they tend to be around $392. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

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

Can stopping save me money on St. Louis to Kansas City flights?

You could potentially save up to 66% on your flight if you consider stops on a St. Louis to Kansas City flight.

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

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

When to book flights from St. Louis to Kansas City

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

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

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

Best Price Found

$158

Fastest flight time

1h 05m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Kansas City

1 airport
The best one-way flight to Kansas City from St. Louis in the past 72 hours is $158. The best round-trip flight deal from St. Louis to Kansas City found on momondo in the last 72 hours is $482.
The fastest flight from St. Louis to Kansas City takes 1h 05m
Direct flights go from St. Louis to Kansas City on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Kansas City: Kansas City (MCI)
Search flight deals

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

    There are 237.1 mi between Lambert-St Louis and Kansas City. By plane, this route typically takes 16h 52m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Kansas City Airport.

  • What documentation or ID do you need to fly to Kansas City Airport?

    The travel and health documents you'll need for your trip to Kansas City Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kansas City Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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

Best airlines flying from St. Louis to Kansas City

Compare and see reviews for airlines that fly from St. Louis to Kansas City with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $97Free CancellationRating
8.0
4,254 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Kansas City

    Southwest flies from St. Louis to Kansas City around 15 times per week, with 4,254 momondo users rating the airline 8.0/10. The cheapest Southwest deal from St. Louis to Kansas City in the last 72 hours was $97 (round-trip), much lower than the average airfare cost of $298 for Southwest flights on this route.

Traveling to a place near Kansas City?

Book flights to Kansas City if you plan to visit one of these locations
Topeka
Overland Park
Kansas City
Lawrence
Independence
Olathe
Liberty
Blue Springs
Lenexa
Lee's Summit
North Kansas City
Excelsior Springs
Shawnee
Leavenworth
Warrensburg
Belton
Gladstone
Cameron
Missouri City
Lansing

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kansas City from St. Louis.

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

momondo does allow users to show only those flights to Kansas City from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential St. Louis to Kansas City flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Kansas City from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Kansas City trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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