MCI - STL

$64 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 1/16. 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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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$172
Typical prices: $452-$602
Southwest
Wed 2/18Mon 2/23
MCI - STL • 1 stop
Cheapest non-stop
$261
Typical prices: $287-$352
Southwest
Tue 1/13Thu 1/22
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
When to travel
March
Cheapest • 60% price drop
April
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

Wed, Feb 18 - Mon, Feb 23
Southwest Logo
7:50 am - 1:35 pm
MCI
-
STL
5h 45m1 stop
Southwest Logo
9:10 am - 2:55 pm
STL
-
MCI
5h 45m1 stop
$172Southwest
Tue, Jan 13 - Thu, Jan 22
Southwest Logo
6:10 am - 7:25 am
MCI
-
STL
1h 15mnonstop
Southwest Logo
8:15 am - 2:20 pm
STL
-
MCI
6h 05m1 stop
$181Southwest
Tue, Jan 13 - Thu, Jan 22
Southwest Logo
6:10 am - 7:25 am
MCI
-
STL
1h 15mnonstop
Southwest Logo
6:00 am - 12:20 pm
STL
-
MCI
6h 20m2 stops
$186Southwest
Wed, Jan 14 - Wed, Jan 21
Multiple Airlines Logo
5:04 pm - 10:34 pm
MCI
-
STL
29h 30m1 stop
Multiple Airlines Logo
8:22 pm - 10:31 am
STL
-
MCI
14h 09m2 stops
$187Multiple Airlines
Wed, Jan 21 - Wed, Jan 21
Southwest Logo
7:35 am - 11:15 am
MCI
-
STL
3h 40m1 stop
Southwest Logo
5:55 pm - 9:25 pm
STL
-
MCI
3h 30m1 stop
$191Southwest
Wed, Jan 21 - Wed, Jan 21
Southwest Logo
11:00 am - 4:50 pm
MCI
-
STL
5h 50m2 stops
Southwest Logo
5:50 pm - 10:20 pm
STL
-
MCI
4h 30m1 stop
$196Southwest
Tue, Jan 13 - Thu, Jan 22
Southwest Logo
11:00 am - 4:50 pm
MCI
-
STL
5h 50m2 stops
Southwest Logo
6:00 am - 12:20 pm
STL
-
MCI
6h 20m2 stops
$201Southwest
Wed, Jan 14 - Wed, Jan 21
Multiple Airlines Logo
5:04 pm - 10:34 pm
MCI
-
STL
29h 30m1 stop
Multiple Airlines Logo
5:42 pm - 4:09 pm
STL
-
MCI
22h 27m1 stop
$223Multiple Airlines
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
8:28 pm - 1:09 pm
MCI
-
STL
16h 41m1 stop
Multiple Airlines Logo
10:11 pm - 11:33 pm
STL
-
MCI
25h 22m1 stop
$232Multiple Airlines
Wed, Feb 18 - Mon, Feb 23
Multiple Airlines Logo
4:39 pm - 11:59 pm
MCI
-
STL
31h 20m2 stops
Multiple Airlines Logo
10:11 pm - 11:33 pm
STL
-
MCI
25h 22m1 stop
$236Multiple 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 Monday. On your return trip to Kansas City, you should consider flying back on a Saturday, and avoid Wednesdays 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 March, where tickets cost $152 (return) on average. On the other hand, the most expensive months are February and August, where the average cost of round-trip tickets is $602 and $583 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.

No, with an average price for the route of $271, prices are generally cheapest when you fly direct.

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.
Airports
MCI

MCI's compact terminal makes departures easy. Security is right behind check-in, leading directly to gates. Arrive two hours early to enjoy local dining options.

Read more about MCIBy John Walton
STL

Use MetroLink for easy city access from STL. The Red Line connects the airport to downtown St. Louis, avoiding rush hour traffic.

Read more about STLBy Yulia Denisyuk
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 seasonAugust
Cheapest flight$64
Best time to beat the crowds but there is an average 55% increase in price.
Most popular time to fly and prices are also 6% 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 $64 for a one-way ticket and $172 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, American Airlines, and JetBlue 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 $186 or less one-way and $404 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.
7.9
SouthwestOverall score based on 4250 reviews
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
8.6Crew
Airline reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

2.0 MediocreRobert, Dec 2025
LAS - TPA
Read more Southwest reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

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 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)