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$88+ Cheap flights from St. Louis to Kansas City (STL - MCI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MCI
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
1 adult, Economy
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Cheap flight deals from St. Louis to Kansas City

Cheapest flights from St. Louis to Kansas City
Explore the most affordable flight options available from St. Louis to Kansas City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:23 pm
STL
-
MCI
1 stop14h 35m
Frontier
Fri 4/1711:19 am
MCI
-
STL
2 stops12h 00m
Frontier
Deal found 3/19$232
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:16 pm
STL
-
MCI
1 stop23h 42m
Multiple Airlines
Tue 4/1412:24 pm
MCI
-
STL
2 stops18h 26m
Multiple Airlines
Deal found 3/16$242
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:16 pm
STL
-
MCI
1 stop23h 17m
Multiple Airlines
Tue 4/1412:24 pm
MCI
-
STL
2 stops18h 26m
Multiple Airlines
Deal found 3/16$296
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:30 am
STL
-
MCI
Nonstop1h 10m
Southwest
Tue 4/1411:55 am
MCI
-
STL
Nonstop1h 05m
Southwest
Deal found 3/16$303
This Kiwi.com deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:59 pm
STL
-
MCI
1 stop24h 07m
Multiple Airlines
Thu 4/1611:53 am
MCI
-
STL
1 stop18h 57m
Multiple Airlines
Deal found 3/19$319
This Southwest deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/112:05 pm
STL
-
MCI
1 stop4h 50m
Southwest
Tue 4/1411:55 am
MCI
-
STL
Nonstop1h 05m
Southwest
Deal found 3/20$322
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:50 pm
STL
-
MCI
Nonstop1h 10m
Southwest
Thu 4/3012:05 pm
MCI
-
STL
Nonstop1h 05m
Southwest
Deal found 3/15$323
This Kiwi.com deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:22 pm
STL
-
MCI
1 stop28h 47m
Multiple Airlines
Fri 4/1711:19 am
MCI
-
STL
1 stop19h 31m
Multiple Airlines
Deal found 3/19$325
This Kiwi.com deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:06 pm
STL
-
MCI
1 stop17h 24m
Frontier
Thu 4/2311:53 am
MCI
-
STL
1 stop18h 57m
Frontier
Deal found 3/19$335

Find flight deals from St. Louis to Kansas City

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Kansas City (MCI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$232
(Kiwi.com)

One-way from

$88
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$332
Provider with most accurate pricing for Lambert-St Louis-Kansas City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Kansas City flights.
Search Deals
From Lambert-St Louis to Kansas City
Search Deals
One-way flight from Lambert-St Louis to Kansas City
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 20, 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

Cheapest round-trip

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 4/14

8:30 am-9:40 am

Nonstop1h 10m

Kansas City

Tue 4/14

11:55 am-1:00 pm

Nonstop1h 05m

$303

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 6/9

6:05 pm-11:35 pm

1 stop5h 30m

Kansas City

Wed 6/10

8:30 am-9:35 am

Nonstop1h 05m

$313

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 4/11

10:35 am-11:45 am

Nonstop1h 10m

Kansas City

Tue 4/14

4:50 pm-5:55 pm

Nonstop1h 05m

$313

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 4/14

6:30 am-10:27 am

1 stop3h 57m

Kansas City

Tue 4/14

5:05 pm-9:13 pm

1 stop4h 08m

$323

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 4/14

10:00 am-2:25 pm

1 stop4h 25m

Kansas City

Wed 4/15

3:21 pm-9:13 pm

1 stop5h 52m

$323
Quickest round-trip

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 4/27

9:50 pm-10:55 pm

Nonstop1h 05m

Kansas City

Thu 4/30

12:05 pm-1:10 pm

Nonstop1h 05m

$323

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 4/16

3:50 pm-5:00 pm

Nonstop1h 10m

Kansas City

Thu 4/30

12:05 pm-1:10 pm

Nonstop1h 05m

$323

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 4/13

9:50 pm-10:55 pm

Nonstop1h 05m

Kansas City

Mon 4/20

5:50 pm-6:55 pm

Nonstop1h 05m

$323

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 6/1

8:30 am-9:40 am

Nonstop1h 10m

Kansas City

Tue 6/2

10:20 am-2:50 pm

1 stop4h 30m

$323

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 4/16

8:30 am-9:40 am

Nonstop1h 10m

Kansas City

Thu 4/23

5:50 pm-6:55 pm

Nonstop1h 05m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from St. Louis to Kansas City

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Kansas City in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Kansas City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Kansas City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Kansas City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Kansas City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Kansas City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Kansas City

Have a flexible travel schedule? Discover the best time to fly to Kansas City from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Kansas City

What is the cheapest time of day to fly from STL to MCI?

Find hourly flight availability from St. Louis to Kansas City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 20, 2026.

It’s optimal to fly from St. Louis to Kansas City at noon. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight in the evening.

How much does it cost to fly round-trip from St. Louis to Kansas City?

The best insider tips for St. Louis to Kansas City flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Kansas City trip
Our travel experts
Matt Meltzer

Matt Meltzer

Expert on MCI

Matt Meltzer has been a travel writer for over a decade, covering U.S. domestic locations and hotels for Thrillist, Fifty Grande, Matador Network, Conde Nast Traveler, and other top publications. He's won multiple travel journalism awards from the Society of American Travel Writers and North American Travel Journalists Association, and currently resides in South Florida.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Reviews of airlines servicing Kansas City

Get insights into the airlines that provide service to Kansas City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kansas City. Reviews last updated March 20, 2026.
Read through reviews of airlines operating flights from St. Louis to Kansas City, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Kansas City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from St. Louis to Kansas City?

    To fly from St. Louis to Kansas City, you need to book a flight from Lambert-St Louis (STL) to Kansas City (MCI). Nonstop flights to Kansas City from Lambert-St Louis take 1h 05m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Lambert-St Louis to Kansas City offered by 1 airline.

  • How popular is this St. Louis to Kansas City flight route?

    Flights from Lambert-St Louis to Kansas City have been viewed 5 times in the past calendar month.

  • How long is the flight from St. Louis to Kansas City?

    There are many flights that can get you from St. Louis to Kansas City in 1h 05m. Fly via Southwest to get the fastest option. There are 236 mi between St. Louis and Kansas City. All flights are typically nonstop.

  • What is the cheapest airline to fly from St. Louis to Kansas City round-trip?

    Southwest, at $97, was found to be the cheapest airline from St. Louis to Kansas City.. Southwest is 72% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest flights from St. Louis to Kansas City?

    Looking for the cheapest flight from St. Louis to Kansas City? While on average our users pay $312, our data indicates the cheapest price to be $138. The most popular route (Lambert-St Louis - Kansas City), is priced around $303.

  • Can I find deals for flights from St. Louis to Kansas City that include hotel bookings?

    Yes. In addition to deals on St. Louis to Kansas City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Kansas City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Kansas City.

  • Can I find deals for business class flights from St. Louis to Kansas City?

    Yes. Cheapflights offers flight deals from St. Louis to Kansas City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Kansas City?

Book flights to Kansas City if you plan to visit one of these locations
Lee's Summit
Independence
Kansas City
Warrensburg
Belton
Lenexa
Liberty
North Kansas City
Lansing
Lawrence
Olathe
Shawnee
Overland Park

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from St. Louis to Kansas City

Discover the top airline that operate flights from St. Louis to Kansas City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$97Average$382FlexibilityNo cancel feeOn-time63%

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