MCI - STL

$80 Find Cheap Flights from Kansas City to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kansas City to St. Louis departing on 4/23. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kansas City to St. Louis, 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 Kansas City to St. Louis, 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
$181
Overall average: $602
Multiple Airlines
Tue 2/24Tue 3/3
MCI - STL • 1 stop
Cheapest non-stop
$193
Typical prices: $368-$501
Southwest
Tue 2/24Tue 3/3
MCI - STL • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
MCI's compact terminal makes departures easy.
Use MetroLink for easy city access from STL.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Southwest
Cheapest • from $193 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 57% price drop
March
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 St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Kansas City to St. Louis 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 Kansas City to St. Louis

Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
4:24 pm - 10:27 pm
MCI
-
STL
30h 03m
1 stop
Multiple Airlines Logo
3:49 pm - 3:29 pm
STL
-
MCI
23h 40m
1 stop
$181Multiple Airlines
Sun, Mar 8 - Tue, Mar 10
Multiple Airlines Logo
8:40 pm - 9:49 am
MCI
-
STL
13h 09m
1 stop
Multiple Airlines Logo
4:51 pm - 3:29 pm
STL
-
MCI
22h 38m
1 stop
$187Multiple Airlines
Tue, Feb 24 - Tue, Mar 3
Southwest Logo
6:10 am - 7:25 am
MCI
-
STL
1h 15mnonstop
Southwest Logo
10:15 am - 11:25 am
STL
-
MCI
1h 10mnonstop
$193Southwest
Tue, Feb 24 - Tue, Mar 3
Southwest Logo
6:10 am - 7:25 am
MCI
-
STL
1h 15mnonstop
Southwest Logo
6:20 am - 1:15 pm
STL
-
MCI
6h 55m
1 stop
$195Southwest
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
4:24 pm - 10:27 pm
MCI
-
STL
30h 03m
1 stop
Multiple Airlines Logo
3:49 pm - 10:30 am
STL
-
MCI
42h 41m
2 stops
$201Multiple Airlines
Tue, Feb 10 - Sat, Feb 14
Multiple Airlines Logo
5:04 pm - 10:27 pm
MCI
-
STL
29h 23m
1 stop
Multiple Airlines Logo
8:17 pm - 9:29 am
STL
-
MCI
13h 12m
1 stop
$205Multiple Airlines
Tue, Feb 10 - Sat, Feb 14
Multiple Airlines Logo
5:04 pm - 10:27 pm
MCI
-
STL
29h 23m
1 stop
Multiple Airlines Logo
8:17 pm - 9:29 am
STL
-
MCI
13h 12m
1 stop
$219Multiple Airlines
Sun, Feb 22 - Sun, Mar 1
Multiple Airlines Logo
10:14 am - 6:51 am
MCI
-
STL
20h 37m
1 stop
Multiple Airlines Logo
10:11 pm - 11:33 pm
STL
-
MCI
25h 22m
1 stop
$231Multiple Airlines
Sun, Feb 22 - Sun, Mar 1
Frontier Logo
10:14 am - 6:51 am
MCI
-
STL
20h 37m
1 stop
Frontier Logo
3:49 pm - 9:53 am
STL
-
MCI
18h 04m
2 stops
$238Frontier
Tue, Feb 10 - Sat, Feb 14
Multiple Airlines Logo
5:04 pm - 10:27 pm
MCI
-
STL
29h 23m
1 stop
Multiple Airlines Logo
6:41 pm - 12:59 pm
STL
-
MCI
18h 18m
2 stops
$274Multiple Airlines
Booking Insights

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

Get data-powered insights and trends into flights from Kansas City to St. Louis 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 Kansas City to St. Louis?

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Kansas City to St. Louis, 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 Kansas City to St. Louis is November, where tickets cost $171 (return) on average. On the other hand, the most expensive months are January and February, where the average cost of round-trip tickets is $653 and $602 respectively.

Can I save money by flying with a layover from Kansas City to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $287 on average.

Find deals
Expert advice

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

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
John Walton

John Walton

Expert on MCI

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 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 seasonAugust
Cheapest flight$80
Best time to beat the crowds but there is an average 45% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Kansas City to St. Louis

When to book flights from Kansas City to St. Louis

Are your dates flexible? Find out the best times to travel from Kansas City to St. Louis 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 Kansas City to St. Louis

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

    In the last 3 days, the lowest price for a flight from Kansas City to St. Louis was $80 for a one-way ticket and $181 for a round-trip.

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

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

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

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

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Kansas City to St. Louis flight route.

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

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

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

    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 Kansas City to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Kansas City 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 Kansas City to St. Louis?

    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 St. Louis with an airline and back to Kansas City with another airline. Booking your flights between Kansas City and STL 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 Kansas City to St. Louis?

    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 St. Louis from Kansas City 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 Kansas City to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $198 or less one-way and $387 or less round-trip.

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

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

Direct departures

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

Direct returns

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

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

 
See real verified KAYAK customer reviews for airlines flying from Kansas City to St. Louis. 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 Kansas City to St. Louis? 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 4268 reviews
8.1Boarding
8.6Crew
7.5Entertainment
8.0Comfort
7.0Food
Airline reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

10.0 ExcellentAnonymous, Jan 2026
PHX - MDW
Read more Southwest reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

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

Information on your arrival and departure airports

Kansas City (MCI)
St. Louis (STL)