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

Flights from Kansas City to Lambert-St Louis have been viewed 28 times in the past calendar month.

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

A quick flight from Kansas City to St. Louis can take about 4h 35m. Southwest provides one of the quickest options available for as low as $154. There are 236 mi between Kansas City and St. Louis.

What is the cheapest airline to fly 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. You may be able to fly from Kansas City to St. Louis for 74% less than the average price by searching for this airline.

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.

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).

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

Looking at all options, your cheapest flight can be booked for $139. While the most popular route (Kansas City - Lambert-St Louis) can be booked for $224 on average, our data indicates $387 when flying from Kansas City to St. Louis.

Most accurate provider : When it comes to deals on Kansas City-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Kansas City-St. Louis flight deals on Cheapflights vs. eDreams >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.

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 is 1 daily flight to St. Louis from 1 airline. 1h 05m is how long a flight from Kansas City to Lambert-St Louis will take if you book a nonstop flight.

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.

$59+ Flights from Kansas City to St. Louis

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Cheap 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 diciembre 12, 2025.

jue. 12/2511:53 amMCI - STL

2 stops22h 09mMultiple Airlines

mar. 1/65:11 pmSTL - MCI

1 stop29h 48mMultiple Airlines

Deal found 12/11

$274

mié. 12/248:45 pmMCI - STL

2 stops12h 55mMultiple Airlines

mar. 1/65:11 pmSTL - MCI

1 stop29h 48mMultiple Airlines

Deal found 12/11

$295

jue. 12/2511:53 amMCI - STL

2 stops22h 09mMultiple Airlines

lun. 1/54:27 pmSTL - MCI

1 stop30h 32mMultiple Airlines

Deal found 12/11

$324

dom. 12/214:32 pmMCI - STL

1 stop27h 35mMultiple Airlines

mar. 1/65:11 pmSTL - MCI

1 stop29h 48mMultiple Airlines

Deal found 12/11

$328

sáb. 12/206:15 pmMCI - STL

1 stop16h 41mMultiple Airlines

mar. 1/65:11 pmSTL - MCI

1 stop29h 48mMultiple Airlines

Deal found 12/11

$336

mié. 12/248:45 pmMCI - STL

2 stops12h 55mMultiple Airlines

lun. 1/54:27 pmSTL - MCI

1 stop30h 32mMultiple Airlines

Deal found 12/11

$344

jue. 12/256:35 pmMCI - STL

1 stop4h 08mUnited Airlines

mar. 1/64:35 pmSTL - MCI

1 stop6h 05mUnited Airlines

Deal found 12/11

$352

jue. 12/2511:53 amMCI - STL

2 stops22h 09mFrontier

dom. 1/410:57 amSTL - MCI

1 stop23h 11mFrontier

Deal found 12/11

$353

lun. 12/2211:13 amMCI - STL

1 stop22h 27mMultiple Airlines

mar. 1/65:11 pmSTL - MCI

1 stop29h 48mMultiple Airlines

Deal found 12/11

$357

Best flights from Kansas City to St. Louis
Discover carefully curated flight deals from Kansas City to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 12, 2025.

mié. 1/1412:55 pmMCI - STL

1 stop4h 35mSouthwest

sáb. 1/1710:30 amSTL - MCI

Nonstop1h 10mSouthwest

Deal found 12/11

$154

vie. 1/1611:21 amMCI - STL

1 stop19h 30mMultiple Airlines

sáb. 1/175:11 pmSTL - MCI

1 stop22h 58mMultiple Airlines

Deal found 12/11

$220

mié. 1/285:45 amMCI - STL

1 stop7h 31mUnited Airlines

mié. 1/286:00 pmSTL - MCI

1 stop5h 30mUnited Airlines

Deal found 12/10

$251

sáb. 1/103:55 pmMCI - STL

1 stop6h 10mSouthwest

mar. 1/139:00 amSTL - MCI

1 stop5h 35mSouthwest

Deal found 12/11

$164

jue. 2/264:24 pmMCI - STL

1 stop7h 35mMultiple Airlines

dom. 3/110:42 amSTL - MCI

1 stop23h 18mMultiple Airlines

Deal found 12/9

$227

lun. 1/199:30 amMCI - STL

1 stop4h 15mSouthwest

mar. 1/208:20 amSTL - MCI

1 stop6h 25mSouthwest

Deal found 12/10

$224

Last-minute flights from Kansas City to St. Louis
Discover last-minute flight deals from Kansas City to St. Louis. Data last updated diciembre 12, 2025 and is based on user searches.

jue. 1/81:42 pmMCI - STL

1 stop7h 16mUnited Airlines

lun. 1/124:49 pmSTL - MCI

1 stop5h 10mUnited Airlines

Deal found 12/9

$251

vie. 1/98:31 pmMCI - STL

1 stop13h 31mFrontier

dom. 1/113:43 pmSTL - MCI

1 stop18h 26mFrontier

Deal found 12/10

$176

sáb. 1/103:55 pmMCI - STL

1 stop6h 10mSouthwest

mar. 1/139:00 amSTL - MCI

1 stop5h 35mSouthwest

Deal found 12/11

$164

mié. 1/1412:55 pmMCI - STL

1 stop4h 35mSouthwest

sáb. 1/1710:30 amSTL - MCI

Nonstop1h 10mSouthwest

Deal found 12/11

$154

vie. 1/1611:21 amMCI - STL

1 stop19h 30mMultiple Airlines

sáb. 1/175:11 pmSTL - MCI

1 stop22h 58mMultiple Airlines

Deal found 12/11

$220

vie. 1/167:35 amMCI - STL

1 stop6h 00mSouthwest

sáb. 1/1710:30 amSTL - MCI

Nonstop1h 10mSouthwest

Deal found 12/11

$271

lun. 1/199:30 amMCI - STL

1 stop4h 15mSouthwest

mar. 1/208:20 amSTL - MCI

1 stop6h 25mSouthwest

Deal found 12/10

$224

One-way flights from Kansas City to St. Louis
Search for one-way flight options from Kansas City to St. Louis. Find affordable one-way fares based on user searches. Data last updated diciembre 12, 2025.

mar. 2/103:55 pmMCI - STL

Nonstop1h 05mSouthwest

Deal found 12/11

$59

vie. 1/98:31 pmMCI - STL

1 stop13h 31mFrontier

Deal found 12/10

$72

dom. 1/118:23 pmMCI - STL

1 stop13h 39mFrontier

Deal found 12/11

$85

lun. 3/98:40 pmMCI - STL

1 stop13h 22mFrontier

Deal found 12/10

$93

lun. 1/128:26 pmMCI - STL

2 stops34h 25mFrontier

Deal found 12/11

$94

jue. 1/86:50 amMCI - STL

1 stop7h 05mSouthwest

Deal found 12/11

$96

mié. 1/73:47 pmMCI - STL

1 stop30h 46mMultiple Airlines

Deal found 12/10

$97

mié. 1/145:04 pmMCI - STL

1 stop29h 30mMultiple Airlines

Deal found 12/11

$98

Find flight deals from Kansas City to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$154 (Southwest)
One-way from	$59 (Southwest)
Popular in	February
Cheapest in	March
Average price	$530

Provider with most accurate pricing for Kansas City-Lambert-St Louis flight deals.

Search Deals

Provider most trusted by Cheapflights users for Kansas City-Lambert-St Louis flights.

Search Deals

From Kansas City to Lambert-St Louis

Search Deals

One-way flight from Kansas City to Lambert-St Louis

Search Deals

High demand for flights, 5% potential price rise

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Kansas City to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

mié. 1/14

12:55 pm-5:30 pm

1 stop4h 35m

Lambert-St Louis

sáb. 1/17

10:30 am-11:40 am

Nonstop1h 10m

$154

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

sáb. 1/10

3:55 pm-10:05 pm

1 stop6h 10m

Lambert-St Louis

mar. 1/13

9:00 am-2:35 pm

1 stop5h 35m

$164

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

vie. 1/16

11:21 am-6:51 am

1 stop19h 30m

Lambert-St Louis

sáb. 1/17

5:11 pm-4:09 pm

1 stop22h 58m

$220

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

lun. 1/19

9:30 am-1:45 pm

1 stop4h 15m

Lambert-St Louis

mar. 1/20

8:20 am-2:45 pm

1 stop6h 25m

$224

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

jue. 2/26

4:24 pm-11:59 pm

1 stop7h 35m

Lambert-St Louis

dom. 3/1

10:42 am-10:00 am

1 stop23h 18m

$227

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

mié. 1/28

5:45 am-1:16 pm

1 stop7h 31m

Lambert-St Louis

mié. 1/28

6:00 pm-11:30 pm

1 stop5h 30m

$251

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

mar. 2/10

3:55 pm-5:00 pm

Nonstop1h 05m

$59

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

mié. 2/11

3:30 pm-8:35 pm

1 stop5h 05m

$69

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

vie. 2/6

8:41 pm-2:46 pm

1 stop18h 05m

$72

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

vie. 1/9

8:31 pm-10:02 am

1 stop13h 31m

$72

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 17 results

Compare providers for flights from Kansas City to St. Louis

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Kansas City-St. Louis flight deals on Cheapflights vs. eDreams >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, May is the cheapest month in which you can book a flight from Kansas City to St. Louis (average of $97). Flying from Kansas City to St. Louis in August is currently the most expensive (average of $583). 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?

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 in the evening, which can drop the price by up to 46% versus a flight in the morning.

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

Cheapflights partnered with top experts to bring you the best recommendations for your Kansas City to St. Louis trip

Airports

MCI

MCI's central security checkpoint is efficient, rarely taking more than 5 minutes without TSA PreCheck.

STL

Use the MetroLink light rail for a convenient, economical ride from STL to downtown St. Louis in about 40 minutes.

Our travel experts

Matt Meltzer

Expert on MCI

Taryn White

Expert on STL

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown Southwest from Kansas City to St. Louis. 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

7.9

Good

4,253 reviews

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

4,253 reviews

Southwest

7.9

Good

4,253 reviews

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

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 is 1 daily flight to St. Louis from 1 airline. 1h 05m 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 28 times in the past calendar month.
How long is the flight from Kansas City to St. Louis?
A quick flight from Kansas City to St. Louis can take about 4h 35m. Southwest provides one of the quickest options available for as low as $154. There are 236 mi between Kansas City and St. Louis.
What is the cheapest airline to fly 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. You may be able to fly from Kansas City to St. Louis for 74% less than the average price by searching for this airline.
What are the cheapest flights from Kansas City to St. Louis?
Looking at all options, your cheapest flight can be booked for $139. While the most popular route (Kansas City - Lambert-St Louis) can be booked for $224 on average, our data indicates $387 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, May is the cheapest month in which you can book a flight from Kansas City to St. Louis (average of $97). Flying from Kansas City to St. Louis in August is currently the most expensive (average of $583). 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

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Farmington

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Other flights to St. Louis

Top airline flying from Kansas City to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$97	Average$361	FlexibilityNo cancel fee	On-time63%

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$59+ 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Kansas City to St. Louis with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Kansas City to St. Louis

Cheapest flights from Kansas City to St. LouisExplore 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 diciembre 12, 2025.

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 diciembre 12, 2025.

Find flight deals from Kansas City to St. Louis

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Kansas City to St. Louis that are best for you.

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 December.

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.

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?

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

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

Airports

MCI

STL

Our travel experts

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown Southwest from Kansas City to St. Louis. 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.

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?

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

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

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

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

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

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

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

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

Traveling to a place near St. Louis?

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.

Alternative routes for Kansas City to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Kansas City to St. Louis

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Book with Flexibility

Travel Smart

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 diciembre 12, 2025.