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$77+ 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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MCI
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Tue 12/3010:48 amSTL - MCI
1 stop23h 20mFrontier
Thu 1/111:53 amMCI - STL
2 stops21h 52mFrontier
Deal found 12/16$379
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Wed 12/314:27 pmSTL - MCI
2 stops18h 31mFrontier
Sun 1/44:32 pmMCI - STL
1 stop27h 35mFrontier
Deal found 12/16$390
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Tue 12/2310:10 pmSTL - MCI
2 stops36h 48mFrontier
Tue 12/308:45 pmMCI - STL
1 stop13h 17mFrontier
Deal found 12/16$450
This Southwest deal was found by Cheapflights users on 12/16. 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 12/308:35 pmSTL - MCI
1 stop3h 20mSouthwest
Thu 1/110:25 amMCI - STL
1 stop5h 55mSouthwest
Deal found 12/16$453
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:30 pmSTL - MCI
1 stop7h 24mAmerican Airlines
Tue 12/305:04 amMCI - STL
1 stop5h 46mAmerican Airlines
Deal found 12/16$501
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:16 amSTL - MCI
1 stop4h 57mAmerican Airlines
Tue 12/237:46 pmMCI - STL
1 stop4h 06mAmerican Airlines
Deal found 12/16$549
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:08 amSTL - MCI
1 stop26h 04mAmerican Airlines
Fri 12/266:00 amMCI - STL
1 stop4h 50mAmerican Airlines
Deal found 12/16$571
This Southwest deal was found by Cheapflights users on 12/16. 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 12/234:15 pmSTL - MCI
Nonstop1h 10mSouthwest
Tue 12/305:45 amMCI - STL
Nonstop1h 10mSouthwest
Deal found 12/16$583
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:02 pmSTL - MCI
1 stop4h 48mUnited Airlines
Sun 12/216:35 pmMCI - STL
1 stop4h 08mUnited Airlines
Deal found 12/16$585
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Wed 12/244:27 pmSTL - MCI
2 stops18h 31mFrontier
Fri 12/268:45 pmMCI - STL
1 stop13h 17mFrontier
Deal found 12/16$605
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:05 amSTL - MCI
1 stop6h 33mUnited Airlines
Sun 12/215:07 pmMCI - STL
1 stop5h 15mUnited Airlines
Deal found 12/17$615
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:17 amSTL - MCI
1 stop4h 56mAmerican Airlines
Fri 12/197:46 pmMCI - STL
1 stop5h 39mAmerican Airlines
Deal found 12/16$621

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$153
(Southwest)

One-way from

$77
(Southwest)

Popular in

December

Cheapest in

March

Average price

$588
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. 19% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 2025.
Use the filters below to find and compare flights from St. Louis to Kansas City that are best for you.

Fly from

St. Louis

Fly to

Kansas City

Route

Depart

Return

Price

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/14

2:20 pm-7:50 pm

1 stop5h 30m

Kansas City

Wed 1/21

11:00 am-4:50 pm

2 stops5h 50m

$158

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 1/13

5:11 pm-4:09 pm

1 stop22h 58m

Kansas City

Tue 1/20

5:04 pm-11:33 pm

1 stop30h 29m

$190

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 1/10

7:00 am-2:25 pm

1 stop7h 25m

Kansas City

Sat 1/17

7:45 am-2:05 pm

1 stop6h 20m

$191

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

6:30 am-10:32 am

1 stop4h 02m

Kansas City

Thu 1/8

9:05 am-4:55 pm

1 stop7h 50m

$251

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 1/13

4:15 pm-11:30 pm

1 stop7h 15m

Kansas City

Tue 1/20

1:42 pm-8:58 pm

1 stop7h 16m

$251

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 2/14

5:30 am-12:05 pm

1 stop6h 35m

Kansas City

Sun 2/15

1:05 pm-2:10 pm

Nonstop1h 05m

$281

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 1/10

7:43 pm-7:26 pm

1 stop23h 43m

Kansas City

Sat 1/17

5:04 pm-6:51 am

2 stops37h 47m

$283

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 2/14

2:51 pm-7:46 pm

1 stop4h 55m

$81

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 1/12

5:11 pm-4:09 pm

1 stop22h 58m

$97

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 2/18

8:17 pm-10:30 am

2 stops14h 13m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 16 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Kansas City flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 month to book a flight from St. Louis to Kansas City?

Currently, April is the cheapest month in which you can book a flight from St. Louis to Kansas City (average of $101). Flying from St. Louis to Kansas City in December is currently the most expensive (average of $502). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 December 18, 2025.

It’s optimal to fly from St. Louis to Kansas City in the afternoon. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight at noon.

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
Airports
STL

Expect security screening at STL to take 5 to 10 minutes during off-peak times. Check real-time wait times online before heading to the airport.

Read more about STLBy Taryn White
MCI

For quick access to downtown KC, take the RideKC bus from MCI. It departs hourly and is free, taking about an hour to reach downtown.

Read more about MCIBy Matt Meltzer
Our travel experts
Matt Meltzer

Matt Meltzer

Expert on MCI

Matt Meltzer

Matt Meltzer

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

Taryn White

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 December 18, 2025.
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
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 10m on average. When it comes time to book airfare, you have a few options: there is 1 outbound flight 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 7 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 4h 02m. Fly via Southwest or United Airlines to get the fastest option. There are 236 mi between St. Louis and Kansas City. This flight may include one or multiple stops.

  • 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 73% 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 $224, our data indicates the cheapest price to be $138. The most popular route (Lambert-St Louis - Kansas City), is priced around $190.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Kansas City?

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Kansas City (average of $101). Flying from St. Louis to Kansas City in December is currently the most expensive (average of $502). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Kansas City
Warrensburg
Belton
Overland Park
Independence
Lenexa
Liberty
North Kansas City
Lansing
Lawrence
Olathe
Shawnee

Browse thousands of different options on Cheapflights for your next trip

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$97Average$298FlexibilityNo cancel feeOn-time63%

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