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$49+ Cheap flights from Kansas City to St. Louis (MCI - STL)

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — STL
Apr 19 — Apr 261
Sat 4/19
Sat 4/26
1 adult, Economy
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Cheap flight deals from Kansas City to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Kansas City (MCI) to St. Louis (STL). 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 April 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$97
(Southwest)

One-way from

$49
(Southwest)

Popular in

February

Cheapest in

March

Average price

$339
Provider with most accurate pricing for Kansas City-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Kansas City-Lambert-St Louis flights.
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From Kansas City to Lambert-St Louis
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One-way flight from Kansas City to Lambert-St Louis
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High demand for flights, 5% potential price rise
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Cheapest flight prices on average. 7% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Kansas City to St. Louis

Cheapest flights from Kansas City to St. Louis
Explore the most affordable flight options available from Kansas City to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 14, 2025.

This Southwest deal was found by Cheapflights users on 4/14. 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 5/135:50 amMCI - STL
Nonstop1h 05mSouthwest
Tue 5/208:55 pmSTL - MCI
Nonstop1h 05mSouthwest
Deal found 4/14$97
This CheapOair deal was found by Cheapflights users on 4/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1712:19 pmMCI - STL
1 stop20h 47mFrontier
Sat 4/196:51 pmSTL - MCI
1 stop24h 54mFrontier
Deal found 4/14$262
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/134:06 pmMCI - STL
1 stop7h 45mAmerican Airlines
Wed 5/145:00 amSTL - MCI
1 stop10h 29mAmerican Airlines
Deal found 4/14$283
This Mytrip deal was found by Cheapflights users on 4/14. 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.
Sat 5/105:46 amMCI - STL
2 stops14h 54mMultiple Airlines
Sun 5/1110:10 amSTL - MCI
2 stops27h 40mMultiple Airlines
Deal found 4/14$382
This United deal was found by Cheapflights users on 4/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/135:20 pmMCI - STL
2 stops21h 27mUnited Airlines
Tue 5/206:30 amSTL - MCI
1 stop13h 24mUnited Airlines
Deal found 4/14$460

Cheapflights Fare Finder

Customize your flight search to find flights from Kansas City to St. Louis 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 April 14, 2025.
Use the filters below to find and compare flights from Kansas City to St. Louis that are best for you.

Fly from

Kansas City

Fly to

St. Louis

Route

Depart

Return

Price

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 5/13

5:50 am-6:55 am

Nonstop1h 05m

Lambert-St Louis

Tue 5/20

8:55 pm-10:00 pm

Nonstop1h 05m

$97

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 5/13

4:06 pm-11:51 pm

1 stop7h 45m

Lambert-St Louis

Wed 5/14

5:00 am-3:29 pm

1 stop10h 29m

$283

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Sat 5/10

5:46 am-8:40 pm

2 stops14h 54m

Lambert-St Louis

Sun 5/11

10:10 am-1:50 pm

2 stops27h 40m

$382

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 5/13

5:20 pm-2:47 pm

2 stops21h 27m

Lambert-St Louis

Tue 5/20

6:30 am-7:54 pm

1 stop13h 24m

$460

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 6/3

11:50 am-12:50 pm

Nonstop1h 00m

$49

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 5/15

8:51 pm-9:09 am

1 stop12h 18m

$86

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 5/21

5:46 am-9:15 am

2 stops27h 29m

$124

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 6/17

6:33 pm-11:59 pm

1 stop5h 26m

$150

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 5/19

11:43 am-6:41 pm

2 stops6h 58m

$171

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 6/3

6:00 am-10:45 pm

2 stops16h 45m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 11 results
1
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Compare providers for flights from Kansas City to St. Louis

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 Kansas City to St. Louis in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Kansas City-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kansas City-St. Louis 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 Kansas City-St. Louis 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 Kansas City to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Kansas City 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 Kansas City to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from Kansas City to St. Louis (average of $311). Flying from Kansas City to St. Louis in March is currently the most expensive (average of $356). 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 MCI to STL?

Find hourly flight availability from Kansas City to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 14, 2025.

When flying from Kansas City to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 13% versus a flight in the morning.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated April 14, 2025.
See what other customers who have flown with Southwest, United Airlines and American Airlines from Kansas City to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,278 reviews

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,278 reviews
Southwest
8.0
Very good
4,278 reviews

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,656 reviews
Southwest
8.0
Very good
4,278 reviews

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,278 reviews

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
7,919 reviews
Southwest
8.0
Very good
4,278 reviews

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Frontier
6.0
Okay
3,280 reviews
Southwest
8.0
Very good
4,278 reviews

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Kansas City to St. Louis. 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 Kansas City to St. Louis?

    Lambert-St Louis is the airport most travelers will use when flying to St. Louis from Kansas City. Booking flights from Kansas City (MCI) to Lambert-St Louis (STL) should be relatively easy as there are 2 daily flights to St. Louis from 1 airline. 1h 00m is how long a flight from Kansas City to Lambert-St Louis will take if you book a nonstop flight.

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

    Flights from Kansas City to Lambert-St Louis have been viewed 16 times in the past calendar month.

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

    Our cheapest airline available from Kansas City to St. Louis is Southwest. Our recent data shows that you can find tickets from as low as $97 on this airline. Additional options worth looking into are Frontier and American Airlines, starting at $262 and $283 round-trip. You may be able to fly from Kansas City to St. Louis for 71% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $49. Frontier flights start at $107 while deals on Spirit Airlines start at $202 one-way.

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

    Looking at all options, your cheapest flight can be booked for $128. While the most popular route (Kansas City - Lambert-St Louis) can be booked for $97 on average our data indicates $312 when flying from Kansas City to St. Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Kansas City to St. Louis 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 Kansas City to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Kansas City to St. Louis (average of $311). Flying from Kansas City to St. Louis in March is currently the most expensive (average of $356). 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
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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Top airline flying from Kansas City to St. Louis

Discover the top airline that operate flights from Kansas City to St. Louis. 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 April 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$117Average$351FlexibilityNo cancel feeOn-time63%

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