STL - MCI

$57 Find Cheap Flights from St. Louis to Kansas City

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Kansas City departing on 12/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Kansas City

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Kansas City, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Kansas City, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$117
Overall average: $502
Southwest
Tue 12/9Tue 12/16
STL - MCI • Non-stop
Cheapest one-way
$57
Typical prices: $166-$343
Frontier
Tue 12/23
STL - MCI • 1 stop
Our travelers' advice
AI-generated summary based on content written by travel experts
Avoid peak hours at STL for shorter wait times.
Use rideshare at MCI for faster city access.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Southwest
Cheapest • from $117 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 65% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Kansas City!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from St. Louis to Kansas City (STL-MCI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Kansas City that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Kansas City

Tue, Dec 9 - Tue, Dec 16
Southwest Logo
10:20 am - 11:30 amSTL-MCI
1h 10mnonstop
Southwest Logo
6:15 am - 7:30 amMCI-STL
1h 15mnonstop
$117Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
10:20 am - 11:30 amSTL-MCI
1h 10mnonstop
Southwest Logo
6:20 am - 11:20 amMCI-STL
5h 00m1 stop
$127Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
10:20 am - 11:30 amSTL-MCI
1h 10mnonstop
Southwest Logo
10:30 am - 5:20 pmMCI-STL
6h 50m2 stops
$132Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
11:15 am - 5:15 pmSTL-MCI
6h 00m2 stops
Southwest Logo
12:15 pm - 5:15 pmMCI-STL
5h 00m1 stop
$142Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
11:15 am - 5:15 pmSTL-MCI
6h 00m2 stops
Southwest Logo
10:30 am - 5:20 pmMCI-STL
6h 50m2 stops
$147Southwest
Find Deal
Thu, Dec 11 - Mon, Dec 15
Southwest Logo
10:20 am - 11:30 amSTL-MCI
1h 10mnonstop
Southwest Logo
12:00 pm - 1:00 pmMCI-STL
1h 00mnonstop
$171Southwest
Find Deal
Thu, Dec 11 - Mon, Dec 15
Southwest Logo
8:45 am - 2:40 pmSTL-MCI
5h 55m1 stop
Southwest Logo
12:00 pm - 1:00 pmMCI-STL
1h 00mnonstop
$181Southwest
Find Deal
Sat, Dec 13 - Mon, Dec 15
Southwest Logo
1:45 pm - 7:55 pmSTL-MCI
6h 10m2 stops
Southwest Logo
4:10 pm - 5:15 pmMCI-STL
1h 05mnonstop
$186Southwest
Find Deal
Thu, Dec 11 - Mon, Dec 15
Southwest Logo
7:00 am - 11:25 amSTL-MCI
4h 25m1 stop
Southwest Logo
5:45 am - 10:45 amMCI-STL
5h 00m1 stop
$191Southwest
Find Deal
Sat, Dec 13 - Mon, Dec 15
Southwest Logo
1:45 pm - 7:55 pmSTL-MCI
6h 10m2 stops
Southwest Logo
4:15 pm - 10:10 pmMCI-STL
5h 55m1 stop
$196Southwest
Find Deal
Booking Insights

KAYAK's insights & trends for St. Louis to Kansas City flights

Get data-powered insights and trends into flights from St. Louis to Kansas City to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Kansas City?

The average price of all round-trip flights from St. Louis to Kansas City clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Kansas City on a Saturday and more expensive on a Wednesday. On your return trip to St. Louis, you should consider flying back on a Tuesday, and avoid Saturdays for better deals.

What is the cheapest month to fly from St. Louis to Kansas City?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Kansas City, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Kansas City is March, where tickets cost $132 (return) on average. On the other hand, the most expensive months are January and August, where the average cost of round-trip tickets is $694 and $579 respectively.

Expert advice

Expert advice for your flight from St. Louis to Kansas City

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-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.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
STL

Avoid peak hours at STL to minimize wait times. Early mornings and afternoons can be crowded, affecting both security and baggage claim.

Read more about STLby Yulia Denisyuk
MCI

For quick city access, use rideshare or taxis from MCI. They're faster than the bus, especially with luggage.

Read more about MCIby John Walton
Our travel experts
John Walton

John Walton

Expert on MCI

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more

Good to know

Low seasonJanuary
Cheapest flight$57
Best time to beat the crowds but there is an average 82% increase in price.
Most popular time to fly with an average 30% increase in price.
Flight from St. Louis to Kansas City

When to book flights from St. Louis to Kansas City

Are your dates flexible? Find out the best times to travel from St. Louis to Kansas City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Kansas City

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

    In the last 3 days, the lowest price for a flight from St. Louis to Kansas City was $57 for a one-way ticket and $117 for a round-trip.

  • Do I need a passport to fly between St. Louis and Kansas City?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from St. Louis to Kansas City?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Kansas City, also known as Kansas City.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Kansas City?

    American Airlines, Delta, and Alaska Airlines offer inflight Wi-Fi service on the St. Louis to Kansas City flight route.

  • Which aircraft models fly most regularly from St. Louis to Kansas City?

    The Boeing 737-700 Passenger/BBJ1 (winglets) is the aircraft model that flies most regularly on the St. Louis to Kansas City flight route.

  • On which days can I fly direct from St. Louis to Kansas City?

    There are nonstop flights from St. Louis to Kansas City on a daily basis.

  • How does KAYAK find such low prices on flights from St. Louis to Kansas City?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Kansas City.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Kansas City?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kansas City from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Kansas City?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Kansas City with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and MCI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Kansas City?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kansas City from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from St. Louis to Kansas City

  • Looking for a cheap flight? 25% of our users found flights on this route for $245 or less one-way and $394 or less round-trip.

Prefer to fly direct from St. Louis to Kansas City?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Lambert-St Louis to Kansas City.
Find which airlines fly direct from Lambert-St Louis Airport to Kansas City Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Kansas City

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Kansas City to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Reviews of the top airline flying from St. Louis to Kansas City

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Kansas City. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Kansas City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4235 reviews
7.0Food
8.0Comfort
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

10.0 ExcellentMichael, Nov 2025LAX - BWI
Read more Southwest reviews

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

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

Information on your arrival and departure airports