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MCI - STL

$71 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 9/10. 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
0 bags
Thu 7/11
Thu 7/18

Search 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
In the last 7 days travelers have searched 44,212,782 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
7:30 pm - 9:25 amMCI-STL
13h 55m1 stop
3:47 pm - 12:26 pmSTL-MCI
20h 39m1 stop
$157Frontier
Find Deal
Tue, Jul 9 - Tue, Jul 16
7:30 pm - 9:25 amMCI-STL
13h 55m1 stop
5:19 pm - 7:41 amSTL-MCI
14h 22m1 stop
$203Frontier
Find Deal
Tue, Jul 9 - Fri, Jul 12
6:51 pm - 9:26 amMCI-STL
14h 35m1 stop
11:26 am - 7:53 amSTL-MCI
20h 27m1 stop
$218Spirit Airlines
Find Deal
Mon, Jul 15 - Tue, Jul 16
6:06 am - 9:38 amMCI-STL
3h 32m1 stop
5:36 am - 9:56 amSTL-MCI
4h 20m1 stop
$242American Airlines
Find Deal
Sun, Oct 27 - Mon, Oct 28
5:10 am - 7:22 pmMCI-STL
14h 12m1 stop
5:45 pm - 5:33 pmSTL-MCI
23h 48m1 stop
Thu, Jun 27 - Sun, Jun 30
6:49 pm - 5:28 pmMCI-STL
22h 39m1 stop
5:45 pm - 5:33 pmSTL-MCI
23h 48m1 stop
Fri, Jun 28 - Sun, Jun 30
5:33 pm - 10:02 pmMCI-STL
4h 29m1 stop
6:08 pm - 9:58 pmSTL-MCI
3h 50m1 stop
$304American Airlines
Find Deal
Mon, Jun 24 - Wed, Jun 26
6:49 pm - 5:28 pmMCI-STL
22h 39m1 stop
6:55 pm - 8:39 amSTL-MCI
13h 44m1 stop
$306Spirit Airlines
Find Deal
Fri, Jun 28 - Sun, Jun 30
1:45 pm - 10:11 pmMCI-STL
8h 26m1 stop
5:30 pm - 12:43 pmSTL-MCI
19h 13m2 stops
$479United Airlines
Find Deal
Tue, Jul 9 - Tue, Jul 16
6:15 am - 10:11 pmMCI-STL
15h 56m1 stop
5:30 pm - 12:41 pmSTL-MCI
19h 11m2 stops
$522United Airlines
Find Deal
Tue, Jul 9 - Fri, Jul 12

Flights from Kansas City to St. Louis - Travel Insights & Trends

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 flights from Kansas City to St. Louis clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to St. Louis on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Kansas City to St. Louis. For your return ticket, we recommend flying on a Monday and avoiding Wednesdays for the best deals.

Which airlines provide the cheapest flights from Kansas City to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Kansas City to St. Louis found by KAYAK users in the last 72 hours was for $157 on Frontier, followed by Spirit Airlines ($218). One-way flight deals have also been found from as low as $71 on Spirit Airlines and from $82 on Frontier.

How many flights are there between Kansas City and St. Louis per day?

Each day, there are between 3 and 7 nonstop flights that take off from Kansas City and land in St. Louis, with an average flight time of 1h 00m. The most common departure time is 5:00 pm and most flights take off in the morning. Each week, there are 29 flights. The most frequent day of departure is Friday, when 24% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Kansas City and St. Louis?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

What’s the earliest departure time from Kansas City to St. Louis?

Early birds can take the earliest flight from Kansas City at 5:30 am and will be landing in St. Louis at 6:30 am.

What’s the latest departure time from Kansas City to St. Louis?

If you prefer to fly at night, the latest flight from Kansas City to St. Louis jets off at 6:50 pm and lands at 7:50 pm.

Good to know

Low season

December

High season

April

Cheapest flight

$71
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly and prices are also 29% 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 $71 for a one-way ticket and $157 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 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.

See more FAQs

Prefer to fly non-stop from Kansas City to St. Louis?

Find which airlines fly direct from Kansas City to Lambert-St Louis, which days they fly and book direct flights.

Nonstop 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

Nonstop 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
See more direct flights

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.
7.3
American AirlinesOverall score based on 14129 reviews
7.2Comfort
6.6Food
8.0Crew
7.6Boarding
7.1Entertainment
Airline reviews

Paid for premium economy had no tv the whole time the crew tried to reset/reboot but would not work they said they would put a trouble ticket in for it. We had 3 seats my tv was the only one that didn't work. They cancelled our flight re worked us on another that left us at airport over night on the floor I have a ten year old and a 78 diabetic mother which also had shingles and suffers from nerve pain in legs and back. Requested wheelchair service at all airports after the re route NO wheelchair service was there to help. WORST experience we have ever had. Went to American airlines assistance it was closed. I AM FURIOUS!!! I expect some sort of compensation from this traumatic experience and no need for flying points we don't plan on using American airlines again!!!!

2.0 MediocreSherri, Jun 2024EWN - CLT
Read more about American Airlines reviews

Paid for premium economy had no tv the whole time the crew tried to reset/reboot but would not work they said they would put a trouble ticket in for it. We had 3 seats my tv was the only one that didn't work. They cancelled our flight re worked us on another that left us at airport over night on the floor I have a ten year old and a 78 diabetic mother which also had shingles and suffers from nerve pain in legs and back. Requested wheelchair service at all airports after the re route NO wheelchair service was there to help. WORST experience we have ever had. Went to American airlines assistance it was closed. I AM FURIOUS!!! I expect some sort of compensation from this traumatic experience and no need for flying points we don't plan on using American airlines again!!!!

This is by far the worst experience I have had with American Airlines. The start of this trip was a complete disaster. I purposely planned my trip so that I would weather any delays so that I could make very important meeting at the Pentagon. My flight was cancelled because of maintenance and I was put on the first flight the next day but I was late to the meeting. After a long week at the Pentagon I just wanted to go home and my flight home which was early in the day was delayed. Eventually the flight was delayed until the next day. I was not authorized a hotel room because DCA was my point of origin. So I paid for a hotel out of pocket. The flight this morning was boarded then deplaned because the aircraft was hot. The flow of information was not happening in DCA and made it worse when the news was bad. I am going to take a break from American for my next few military flights. Hopefully whatever has been going on with American Airlines will be resolved.

We had a 2 hour delay. The seats were smaller than most other airlines. The person in front of us wanted to lay back and we had to stop her because she was pressing against my girlfriend’s legs. We had to ask her to sit up and not lay back due to the lack of room.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Terrible. I didn’t fly and I had an important meeting the next day.

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

Book cheap flights from Kansas City to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Kansas City to St. Louis found on KAYAK in the last 72 hours.
9/10Tue
1 stopSpirit Airlines
21h 56mMCI-STL
$71
8/8Thu
1 stopFrontier
13h 41mMCI-STL
$82
9/10Tue
2 stopsSpirit Airlines
17h 30mMCI-STL
$83
9/10Tue
3 stopsSpirit Airlines
25h 31mMCI-STL
$122
6/29Sat
1 stopSpirit Airlines
21h 10mMCI-STL
$123
7/14Sun
1 stopAmerican Airlines
4h 49mMCI-STL
$155
6/23Sun
1 stopSun Country Air
9h 25mMCI-STL
$163
7/14Sun
3 stops
45h 30mMCI-STL
$237
8/8Thu
2 stops
21h 22mMCI-STL
$245
6/16Sun
1 stopAmerican Airlines
6h 36mMCI-STL
$258

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Last minute flights from Kansas City to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Kansas City to St. Louis that are departing in the next 10 days.
6/15Sat
multi-stopAmerican Airlines
5h 00mMCI-STL
6/17Mon
multi-stopAmerican Airlines
5h 39mSTL-MCI
$509
6/15Sat
multi-stopAmerican Airlines
5h 00mMCI-STL
6/17Mon
multi-stopAmerican Airlines
7h 15mSTL-MCI
$807

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Kansas City - St. Louis Flights

Departure:

Kansas City (MCI)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Kansas City

Cabin classes:

$537