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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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:46 pm - 7:51 pm
STL
-
MCI
28h 05m1 stop
Multiple Airlines Logo
7:00 am - 11:18 am
MCI
-
STL
28h 18m2 stops
$259Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
3:46 pm - 7:51 pm
STL
-
MCI
28h 05m1 stop
Multiple Airlines Logo
5:04 pm - 8:24 am
MCI
-
STL
15h 20m1 stop
$268Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
Frontier Logo
3:43 pm - 10:09 am
STL
-
MCI
18h 26m1 stop
Frontier Logo
8:33 pm - 6:32 pm
MCI
-
STL
21h 59m1 stop
$288Frontier
Sun, Jan 11 - Thu, Jan 15
United Airlines Logo
8:41 am - 4:19 pm
STL
-
MCI
7h 38m1 stop
United Airlines Logo
2:58 pm - 10:14 pm
MCI
-
STL
7h 16m1 stop
$296United Airlines
Mon, Feb 23 - Wed, Feb 25
Frontier Logo
9:46 pm - 7:41 pm
STL
-
MCI
21h 55m2 stops
Frontier Logo
8:33 pm - 6:32 pm
MCI
-
STL
21h 59m1 stop
$300Frontier
Sun, Jan 11 - Thu, Jan 15
United Airlines Logo
6:30 am - 10:32 am
STL
-
MCI
4h 02m1 stop
United Airlines Logo
8:00 am - 2:28 pm
MCI
-
STL
6h 28m1 stop
$319United Airlines
Sat, Jan 24 - Sat, Jan 31
United Airlines Logo
4:49 pm - 9:59 pm
STL
-
MCI
5h 10m1 stop
United Airlines Logo
1:50 pm - 10:14 pm
MCI
-
STL
8h 24m2 stops
$324United Airlines
Mon, Feb 23 - Wed, Feb 25
Southwest Logo
8:25 am - 9:35 am
STL
-
MCI
1h 10mnonstop
Southwest Logo
4:50 pm - 5:55 pm
MCI
-
STL
1h 05mnonstop
$329Southwest
Fri, Mar 6 - Wed, Mar 11
Southwest Logo
12:10 pm - 6:20 pm
STL
-
MCI
6h 10m1 stop
Southwest Logo
2:00 pm - 5:25 pm
MCI
-
STL
3h 25m1 stop
$339Southwest
Fri, Mar 6 - Wed, Mar 11
American Airlines Logo
9:25 am - 4:47 pm
STL
-
MCI
7h 22m1 stop
American Airlines Logo
1:56 pm - 7:29 pm
MCI
-
STL
5h 33m1 stop
$351American Airlines
Wed, Jan 28 - Fri, Jan 30

Southwest flights from St. Louis to Kansas City

Our best Southwest deals on St. Louis to Kansas City flight tickets
Southwest
Mar 6
STL8:25 amLambert-St Louis
1h 10m
MCI9:35 amKansas City
Mar 11
MCI4:50 pmKansas City
1h 05m
STL5:55 pmLambert-St Louis
$329
Find similar
Southwest
Mar 6
STL12:10 pmLambert-St Louis
6h 10m
1 stop
MCI6:20 pmKansas City
Mar 11
MCI2:00 pmKansas City
3h 25m
1 stop
STL5:25 pmLambert-St Louis
$339
Find similar
Southwest
Jun 20
STL6:05 pmLambert-St Louis
4h 45m
1 stop
MCI10:50 pmKansas City
Jun 21
MCI3:50 pmKansas City
5h 05m
1 stop
STL8:55 pmLambert-St Louis
$399
Find similar

United Airlines flights from St. Louis to Kansas City

Our best United Airlines deals on St. Louis to Kansas City flight tickets
United Airlines
Feb 23
STL8:41 amLambert-St Louis
7h 38m
1 stop
MCI4:19 pmKansas City
Feb 25
MCI2:58 pmKansas City
7h 16m
1 stop
STL10:14 pmLambert-St Louis
$296
Find similar
United Airlines
Jan 24
STL3:11 pmLambert-St Louis
6h 48m
1 stop
MCI9:59 pmKansas City
Jan 31
MCI8:00 amKansas City
4h 29m
1 stop
STL12:29 pmLambert-St Louis
$319
Find similar
United Airlines
Feb 23
STL4:49 pmLambert-St Louis
5h 10m
1 stop
MCI9:59 pmKansas City
Feb 25
MCI1:50 pmKansas City
8h 24m
2 stops
STL10:14 pmLambert-St Louis
$324
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 December 28, 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

Sat 1/24

3:46 pm-7:51 pm

1 stop28h 05m

Kansas City

Sat 1/31

7:00 am-11:18 am

2 stops28h 18m

$259

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 1/24

3:46 pm-7:51 pm

1 stop28h 05m

Kansas City

Sat 1/31

5:04 pm-8:24 am

1 stop15h 20m

$268

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sun 1/11

3:43 pm-10:09 am

1 stop18h 26m

Kansas City

Thu 1/15

8:33 pm-6:32 pm

1 stop21h 59m

$288

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 2/23

8:41 am-4:19 pm

1 stop7h 38m

Kansas City

Wed 2/25

2:58 pm-10:14 pm

1 stop7h 16m

$296

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sun 1/11

9:46 pm-7:41 pm

2 stops21h 55m

Kansas City

Thu 1/15

8:33 pm-6:32 pm

1 stop21h 59m

$300

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 1/24

6:30 am-10:32 am

1 stop4h 02m

Kansas City

Sat 1/31

8:00 am-2:28 pm

1 stop6h 28m

$319

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 2/23

4:49 pm-9:59 pm

1 stop5h 10m

Kansas City

Wed 2/25

1:50 pm-10:14 pm

2 stops8h 24m

$324

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 3/6

8:25 am-9:35 am

Nonstop1h 10m

Kansas City

Wed 3/11

4:50 pm-5:55 pm

Nonstop1h 05m

$329

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 3/6

12:10 pm-6:20 pm

1 stop6h 10m

Kansas City

Wed 3/11

2:00 pm-5:25 pm

1 stop3h 25m

$339

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/28

9:25 am-4:47 pm

1 stop7h 22m

Kansas City

Fri 1/30

1:56 pm-7:29 pm

1 stop5h 33m

$351

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 $331. 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 Friday will generally be more expensive and average around $413. 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 $330 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $383. 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 18% 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 December 2025, prices for St. Louis to Kansas City flights are approximately 310% 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

$138

Fastest flight time

1h 05m

Direct flights

Mon, Tue, 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 $138. The best round-trip flight deal from St. Louis to Kansas City found on momondo in the last 72 hours is $432.
The fastest flight from St. Louis to Kansas City takes 1h 05m
Direct flights go from St. Louis to Kansas City on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Kansas City. From St. Louis there are direct flights to 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 1h 05m.

  • 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
4,256 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Kansas City

    Southwest flies from St. Louis to Kansas City around 13 times per week, with 4,256 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 $272 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
Overland Park
Topeka
Kansas City
Independence
Lawrence
Olathe
Liberty
Blue Springs
Lenexa
Lee's Summit
North Kansas City
Excelsior Springs
Leavenworth
Warrensburg
Shawnee
Belton
Gladstone
Cameron
Lansing
Missouri City

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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