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$49+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MCI
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap 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 July 31, 2025.

Round-trip from

$97
(Southwest)

One-way from

$49
(Southwest)

Popular in

January

Cheapest in

March

Average price

$382
From Lambert-St Louis to Kansas City
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One-way flight from Lambert-St Louis to Kansas City
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Highest demand for flights based on searches. 34% potential increase in price ($174 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 31, 2025.

This Southwest deal was found by Cheapflights users on 7/30. 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.
Wed 8/2710:25 amSTL - MCI
Nonstop1h 05mSouthwest
Wed 9/34:45 pmMCI - STL
Nonstop1h 05mSouthwest
Deal found 7/30$97
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:54 pmSTL - MCI
1 stop17h 39mFrontier
Fri 8/226:02 pmMCI - STL
1 stop15h 09mFrontier
Deal found 7/30$195
This American Airlines deal was found by Cheapflights users on 7/29. 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 8/198:01 pmSTL - MCI
1 stop17h 21mAmerican Airlines
Sat 8/236:00 amMCI - STL
1 stop7h 12mAmerican Airlines
Deal found 7/29$257
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/222:30 pmSTL - MCI
3 stops32h 23mSpirit Airlines
Sun 8/242:56 pmMCI - STL
2 stops22h 36mSpirit Airlines
Deal found 7/29$370
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 10/712:25 pmSTL - MCI
1 stop9h 20mUnited Airlines
Sat 10/117:30 amMCI - STL
1 stop15h 05mUnited Airlines
Deal found 7/31$377
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:00 amSTL - MCI
1 stop17h 52mDelta
Wed 10/155:56 amMCI - STL
1 stop9h 59mDelta
Deal found 7/31$383

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 July 31, 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 8/27

10:25 am-11:30 am

Nonstop1h 05m

Kansas City

Wed 9/3

4:45 pm-5:50 pm

Nonstop1h 05m

$97

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 8/20

7:54 pm-1:33 pm

1 stop17h 39m

Kansas City

Fri 8/22

6:02 pm-9:11 am

1 stop15h 09m

$195

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 8/19

8:01 pm-1:22 pm

1 stop17h 21m

Kansas City

Sat 8/23

6:00 am-1:12 pm

1 stop7h 12m

$257

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 8/22

2:30 pm-10:53 pm

3 stops32h 23m

Kansas City

Sun 8/24

2:56 pm-1:32 pm

2 stops22h 36m

$370

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 10/7

12:25 pm-9:45 pm

1 stop9h 20m

Kansas City

Sat 10/11

7:30 am-10:35 pm

1 stop15h 05m

$377

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 10/11

6:00 am-11:52 pm

1 stop17h 52m

Kansas City

Wed 10/15

5:56 am-3:55 pm

1 stop9h 59m

$383

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 10/28

2:45 pm-3:50 pm

Nonstop1h 05m

$49

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 9/3

7:54 pm-1:48 pm

1 stop17h 54m

$97

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 11/25

2:17 pm-9:23 pm

1 stop7h 06m

$145

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 11/4

10:35 am-9:04 am

2 stops22h 29m

$146

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 12 results
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The best insider tips for St. Louis to Kansas City flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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

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, January is the cheapest month in which you can book a flight from St. Louis to Kansas City (average of $298). Flying from St. Louis to Kansas City in June is currently the most expensive (average of $352). 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 July 31, 2025.

It’s optimal to fly from St. Louis to Kansas City at noon. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the evening.

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 July 31, 2025.
Read through reviews of airlines operating flights from St. Louis to Kansas City, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 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 5 times in the past calendar month.

  • What are the cheapest airlines flying from St. Louis to Kansas City round-trip?

    Southwest, at $97, was found to be the cheapest airline from St. Louis to Kansas City.Alternate airlines to your destination round-trip include Frontier and American Airlines. Southwest is 71% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Kansas City one-way?

    One-way options have recently been found by users for as low as $49 on Southwest. Other airlines that offer cheap prices include Frontier from $97 and American Airlines from $145 one-way.

  • 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 $285, our data indicates the cheapest price to be $48. The most popular route (Lambert-St Louis - Kansas City), is priced around $97.

  • 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, January is the cheapest month in which you can book a flight from St. Louis to Kansas City (average of $298). Flying from St. Louis to Kansas City in June is currently the most expensive (average of $352). 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
Shawnee
Liberty
Lenexa
Lee's Summit
Belton
Overland Park
North Kansas City
Kansas City
Lansing
Lawrence
Olathe

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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$97Average$330FlexibilityNo cancel feeOn-time63%

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