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Cheap flights from St. Louis to Kansas City from $80

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 2/14. 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 St. Louis to Kansas City

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
1:25 pm - 2:35 pm
STL
-
MCI
1h 10mnonstop
Southwest Logo
12:05 pm - 1:10 pm
MCI
-
STL
1h 05mnonstop
$193Southwest
Wed, May 6 - Mon, May 11
Southwest Logo
1:05 pm - 7:45 pm
STL
-
MCI
6h 40m
1 stop
Southwest Logo
4:45 pm - 5:50 pm
MCI
-
STL
1h 05mnonstop
$203Southwest
Thu, Feb 19 - Sat, Feb 21
Frontier Logo
1:40 pm - 7:51 pm
STL
-
MCI
6h 11m
1 stop
Frontier Logo
8:41 pm - 2:46 pm
MCI
-
STL
18h 05m
1 stop
$204Frontier
Mon, Feb 2 - Fri, Feb 6
Southwest Logo
4:35 pm - 10:55 pm
STL
-
MCI
6h 20m
2 stops
Southwest Logo
8:25 am - 9:30 am
MCI
-
STL
1h 05mnonstop
$209Southwest
Wed, May 6 - Mon, May 11
Southwest Logo
1:05 pm - 7:45 pm
STL
-
MCI
6h 40m
1 stop
Southwest Logo
1:05 pm - 4:45 pm
MCI
-
STL
3h 40m
1 stop
$213Southwest
Thu, Feb 19 - Sat, Feb 21
Multiple Airlines Logo
8:17 pm - 10:30 am
STL
-
MCI
14h 13m
2 stops
Multiple Airlines Logo
9:24 pm - 1:09 pm
MCI
-
STL
15h 45m
1 stop
$217Multiple Airlines
Wed, Feb 25 - Thu, Feb 26
Southwest Logo
4:35 pm - 10:55 pm
STL
-
MCI
6h 20m
2 stops
Southwest Logo
7:05 pm - 10:45 pm
MCI
-
STL
3h 40m
1 stop
$218Southwest
Wed, May 6 - Mon, May 11
Multiple Airlines Logo
10:11 pm - 11:33 pm
STL
-
MCI
25h 22m
1 stop
Multiple Airlines Logo
11:00 am - 6:51 am
MCI
-
STL
19h 51m
1 stop
$222Multiple Airlines
Fri, Feb 13 - Fri, Feb 20
Frontier Logo
9:02 pm - 7:46 pm
STL
-
MCI
22h 44m
2 stops
Frontier Logo
11:00 am - 6:51 am
MCI
-
STL
19h 51m
1 stop
$238Frontier
Fri, Feb 13 - Fri, Feb 20
Frontier Logo
3:49 pm - 9:53 am
STL
-
MCI
18h 04m
2 stops
Frontier Logo
5:05 pm - 10:31 am
MCI
-
STL
17h 26m
1 stop
$246Frontier
Sun, Feb 22 - Mon, Mar 30

Southwest flights from St. Louis to Kansas City

Our best Southwest deals on St. Louis to Kansas City flight tickets
Southwest
Feb 19
STL1:05 pmLambert-St Louis
6h 40m
1 stop
MCI7:45 pmKansas City
Feb 21
MCI4:45 pmKansas City
1h 05m
STL5:50 pmLambert-St Louis
$203
Southwest
Feb 19
STL1:05 pmLambert-St Louis
6h 40m
1 stop
MCI7:45 pmKansas City
Feb 21
MCI1:05 pmKansas City
3h 40m
1 stop
STL4:45 pmLambert-St Louis
$213
Southwest
Feb 19
STL3:55 pmLambert-St Louis
1h 10m
MCI5:05 pmKansas City
Feb 21
MCI4:45 pmKansas City
1h 05m
STL5:50 pmLambert-St Louis
$272

Frontier flights from St. Louis to Kansas City

Our best Frontier deals on St. Louis to Kansas City flight tickets
Frontier
Feb 2
STL1:40 pmLambert-St Louis
6h 11m
1 stop
MCI7:51 pmKansas City
Feb 6
MCI8:41 pmKansas City
18h 05m
1 stop
STL2:46 pmLambert-St Louis
$204
Frontier
Feb 13
STL9:02 pmLambert-St Louis
22h 44m
2 stops
MCI7:46 pmKansas City
Feb 20
MCI11:00 amKansas City
19h 51m
1 stop
STL6:51 amLambert-St Louis
$238
Frontier
Feb 22
STL3:49 pmLambert-St Louis
18h 04m
2 stops
MCI9:53 amKansas City
Mar 30
MCI5:05 pmKansas City
17h 26m
1 stop
STL10:31 amLambert-St Louis
$246

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 January 18, 2026.
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 5/6

1:25 pm-2:35 pm

Nonstop1h 10m

Kansas City

Mon 5/11

12:05 pm-1:10 pm

Nonstop1h 05m

$193

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 2/19

1:05 pm-7:45 pm

1 stop6h 40m

Kansas City

Sat 2/21

4:45 pm-5:50 pm

Nonstop1h 05m

$203

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 2/2

1:40 pm-7:51 pm

1 stop6h 11m

Kansas City

Fri 2/6

8:41 pm-2:46 pm

1 stop18h 05m

$204

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 5/6

4:35 pm-10:55 pm

2 stops6h 20m

Kansas City

Mon 5/11

8:25 am-9:30 am

Nonstop1h 05m

$209

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 2/19

1:05 pm-7:45 pm

1 stop6h 40m

Kansas City

Sat 2/21

1:05 pm-4:45 pm

1 stop3h 40m

$213

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 2/25

8:17 pm-10:30 am

2 stops14h 13m

Kansas City

Thu 2/26

9:24 pm-1:09 pm

1 stop15h 45m

$217

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 5/6

4:35 pm-10:55 pm

2 stops6h 20m

Kansas City

Mon 5/11

7:05 pm-10:45 pm

1 stop3h 40m

$218

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 2/13

10:11 pm-11:33 pm

1 stop25h 22m

Kansas City

Fri 2/20

11:00 am-6:51 am

1 stop19h 51m

$222

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 2/13

9:02 pm-7:46 pm

2 stops22h 44m

Kansas City

Fri 2/20

11:00 am-6:51 am

1 stop19h 51m

$238

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sun 2/22

3:49 pm-9:53 am

2 stops18h 04m

Kansas City

Mon 3/30

5:05 pm-10:31 am

1 stop17h 26m

$246

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

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 Wednesday when prices can be found for as low as $283. 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 $408. 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 $351 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $372. 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?

No. A direct flight is the cheapest option for a flight between St. Louis to Kansas City.

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

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

$209

Fastest flight time

1h 10m

Direct flights

Every day

Airports in Kansas City

1 airport
The best one-way flight to Kansas City from St. Louis in the past 72 hours is $209. The best round-trip flight deal from St. Louis to Kansas City found on momondo in the last 72 hours is $347.
The fastest flight from St. Louis to Kansas City takes 1h 10m
Direct flights go from St. Louis to Kansas City every day.
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 10m.

  • 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
4,261 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Kansas City

    Southwest flies from St. Louis to Kansas City around 18 times per week, with 4,261 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 $261 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
Independence
Lawrence
Olathe
Liberty
Blue Springs
Lenexa
Lee's Summit
North Kansas City
Excelsior Springs
Leavenworth
Warrensburg
Gladstone
Shawnee
Belton
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

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