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Cheap flights from St. Louis to Kansas City from $49

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 10/15. 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

Southwest Logo
8:25 am - 9:30 amSTL-MCI
1h 05mnonstop
Southwest Logo
5:55 am - 7:00 amMCI-STL
1h 05mnonstop
$97Southwest
Find Deal
Sat, Oct 25 - Mon, Oct 27
Southwest Logo
8:25 am - 9:30 amSTL-MCI
1h 05mnonstop
Southwest Logo
4:45 pm - 8:05 pmMCI-STL
3h 20m1 stop
$107Southwest
Find Deal
Sat, Oct 25 - Mon, Oct 27
Southwest Logo
1:45 pm - 7:55 pmSTL-MCI
6h 10m2 stops
Southwest Logo
6:15 am - 7:30 amMCI-STL
1h 15mnonstop
$112Southwest
Find Deal
Sat, Nov 15 - Mon, Nov 17
Southwest Logo
5:35 am - 10:30 amSTL-MCI
4h 55m1 stop
Southwest Logo
3:50 pm - 10:05 pmMCI-STL
6h 15m1 stop
$117Southwest
Find Deal
Sat, Oct 25 - Mon, Oct 27
Southwest Logo
1:45 pm - 7:30 pmSTL-MCI
5h 45m2 stops
Southwest Logo
4:15 pm - 10:10 pmMCI-STL
5h 55m1 stop
$122Southwest
Find Deal
Sat, Nov 15 - Mon, Nov 17
Southwest Logo
10:15 pm - 11:20 pmSTL-MCI
1h 05mnonstop
Southwest Logo
4:00 pm - 5:05 pmMCI-STL
1h 05mnonstop
$134Southwest
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Mon, Oct 27 - Fri, Oct 31
Frontier Logo
7:52 pm - 5:55 pmSTL-MCI
22h 03m1 stop
Frontier Logo
8:28 pm - 10:07 amMCI-STL
13h 39m1 stop
$146Frontier
Find Deal
Fri, Oct 24 - Sat, Nov 1
Frontier Logo
7:52 pm - 5:55 pmSTL-MCI
22h 03m1 stop
Frontier Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
$152Frontier
Find Deal
Fri, Oct 24 - Fri, Oct 31
Frontier Logo
8:40 pm - 7:33 pmSTL-MCI
22h 53m1 stop
Frontier Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
$157Frontier
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Thu, Oct 30 - Fri, Nov 7
Multiple Airlines Logo
9:59 pm - 2:00 pmSTL-MCI
16h 01m1 stop
Multiple Airlines Logo
8:28 pm - 10:07 amMCI-STL
13h 39m1 stop
$202Multiple Airlines
Find Deal
Mon, Oct 27 - Sat, Nov 1

Southwest flights from St. Louis to Kansas City

Our best Southwest deals on St. Louis to Kansas City flight tickets
Southwest
Oct 25
STL8:25 amLambert-St Louis
1h 05m
MCI9:30 amKansas City
Oct 27
MCI5:55 amKansas City
1h 05m
STL7:00 amLambert-St Louis
$97
Find similar
Southwest
Oct 25
STL8:25 amLambert-St Louis
1h 05m
MCI9:30 amKansas City
Oct 27
MCI4:45 pmKansas City
3h 20m
1 stop
STL8:05 pmLambert-St Louis
$107
Find similar
Southwest
Nov 15
STL1:45 pmLambert-St Louis
6h 10m
2 stops
MCI7:55 pmKansas City
Nov 17
MCI6:15 amKansas City
1h 15m
STL7:30 amLambert-St Louis
$112
Find similar

Frontier flights from St. Louis to Kansas City

Our best Frontier deals on St. Louis to Kansas City flight tickets
Frontier
Oct 24
STL7:52 pmLambert-St Louis
22h 03m
1 stop
MCI5:55 pmKansas City
Nov 1
MCI8:28 pmKansas City
13h 39m
1 stop
STL10:07 amLambert-St Louis
$146
Find similar
Frontier
Oct 24
STL7:52 pmLambert-St Louis
22h 03m
1 stop
MCI5:55 pmKansas City
Oct 31
MCI8:28 pmKansas City
12h 39m
1 stop
STL9:07 amLambert-St Louis
$152
Find similar
Frontier
Oct 30
STL8:40 pmLambert-St Louis
22h 53m
1 stop
MCI7:33 pmKansas City
Nov 7
MCI8:28 pmKansas City
12h 39m
1 stop
STL9:07 amLambert-St Louis
$157
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 September 16, 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 10/25

8:25 am-9:30 am

Nonstop1h 05m

Kansas City

Mon 10/27

5:55 am-7:00 am

Nonstop1h 05m

$97

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 10/25

8:25 am-9:30 am

Nonstop1h 05m

Kansas City

Mon 10/27

4:45 pm-8:05 pm

1 stop3h 20m

$107

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 11/15

1:45 pm-7:55 pm

2 stops6h 10m

Kansas City

Mon 11/17

6:15 am-7:30 am

Nonstop1h 15m

$112

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 10/25

5:35 am-10:30 am

1 stop4h 55m

Kansas City

Mon 10/27

3:50 pm-10:05 pm

1 stop6h 15m

$117

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 11/15

1:45 pm-7:30 pm

2 stops5h 45m

Kansas City

Mon 11/17

4:15 pm-10:10 pm

1 stop5h 55m

$122

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 10/27

10:15 pm-11:20 pm

Nonstop1h 05m

Kansas City

Fri 10/31

4:00 pm-5:05 pm

Nonstop1h 05m

$134

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 10/24

7:52 pm-5:55 pm

1 stop22h 03m

Kansas City

Sat 11/1

8:28 pm-10:07 am

1 stop13h 39m

$146

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 10/24

7:52 pm-5:55 pm

1 stop22h 03m

Kansas City

Fri 10/31

8:28 pm-9:07 am

1 stop12h 39m

$152

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 10/30

8:40 pm-7:33 pm

1 stop22h 53m

Kansas City

Fri 11/7

8:28 pm-9:07 am

1 stop12h 39m

$157

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 10/27

9:59 pm-2:00 pm

1 stop16h 01m

Kansas City

Sat 11/1

8:28 pm-10:07 am

1 stop13h 39m

$202

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 Friday will generally be more expensive and average around $435. 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 evening 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 evening. Try not to purchase tickets in the afternoon 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?

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?

As of September 2025, prices for St. Louis to Kansas City flights are approximately 75% cheaper 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

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 $138. The best round-trip flight deal from St. Louis to Kansas City found on momondo in the last 72 hours is $254.
The fastest flight from St. Louis to Kansas City takes 1h 05m
Direct flights go from St. Louis to Kansas City every day.
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 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
4,242 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 4,242 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 $295 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
Shawnee
Leavenworth
Excelsior Springs
North Kansas City
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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