Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Kansas City from $80

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Kansas City departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Kansas City

Cheap round-trip flights

Frontier Logo
8:40 pm - 7:33 pmSTL-MCI
22h 53m1 stop
Frontier Logo
8:28 pm - 10:07 amMCI-STL
13h 39m1 stop
$157Frontier
Find Deal
Thu, Oct 30 - Sat, Nov 1
Frontier Logo
7:45 pm - 7:33 pmSTL-MCI
23h 48m1 stop
Frontier Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
$159Frontier
Find Deal
Fri, Nov 14 - Sun, Nov 16
Frontier Logo
8:40 pm - 7:33 pmSTL-MCI
22h 53m1 stop
Frontier Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
$169Frontier
Find Deal
Thu, Oct 30 - Mon, Nov 3
Frontier Logo
8:40 pm - 7:33 pmSTL-MCI
22h 53m1 stop
Frontier Logo
8:28 pm - 10:07 amMCI-STL
13h 39m1 stop
$184Frontier
Find Deal
Wed, Oct 29 - Sat, Nov 1
Southwest Logo
10:20 am - 11:30 amSTL-MCI
1h 10mnonstop
Southwest Logo
12:00 pm - 1:00 pmMCI-STL
1h 00mnonstop
$191Southwest
Find Deal
Wed, Dec 10 - Wed, Dec 17
Logo
7:55 pm - 1:48 pmSTL-MCI
17h 53m1 stop
Logo
5:11 pm - 10:02 amMCI-STL
16h 51m1 stop
$214
Find Deal
Thu, Oct 2 - Mon, Oct 13
Logo
10:35 am - 10:18 amSTL-MCI
23h 43m1 stop
Logo
3:01 pm - 9:06 amMCI-STL
18h 05m1 stop
$216
Find Deal
Thu, Sep 25 - Fri, Sep 26
Southwest Logo
9:50 am - 10:55 amSTL-MCI
1h 05mnonstop
Southwest Logo
10:40 am - 11:45 amMCI-STL
1h 05mnonstop
$221Southwest
Find Deal
Thu, Oct 23 - Tue, Oct 28
Spirit Airlines Logo
10:57 am - 8:45 pmSTL-MCI
33h 48m2 stops
Spirit Airlines Logo
5:11 pm - 10:02 amMCI-STL
16h 51m1 stop
$280Spirit Airlines
Find Deal
Tue, Oct 28 - Mon, Nov 3
Spirit Airlines Logo
10:57 am - 4:16 pmSTL-MCI
29h 19m1 stop
Spirit Airlines Logo
10:09 am - 11:01 amMCI-STL
24h 52m2 stops
$285Spirit Airlines
Find Deal
Thu, Oct 30 - Wed, Nov 5

Southwest flights from St. Louis to Kansas City

Our best Southwest deals on St. Louis to Kansas City flight tickets
Southwest
Dec 10
STL10:20 amLambert-St Louis
1h 10m
MCI11:30 amKansas City
Dec 17
MCI12:00 pmKansas City
1h 00m
STL1:00 pmLambert-St Louis
$191
Find similar
Southwest
Oct 23
STL9:50 amLambert-St Louis
1h 05m
MCI10:55 amKansas City
Oct 28
MCI10:40 amKansas City
1h 05m
STL11:45 amLambert-St Louis
$221
Find similar
Southwest
Sep 16
STL1:20 pmLambert-St Louis
1h 05m
MCI2:25 pmKansas City
Sep 19
MCI5:25 amKansas City
1h 05m
STL6:30 amLambert-St Louis
$231
Find similar

Frontier flights from St. Louis to Kansas City

Our best Frontier deals on St. Louis to Kansas City flight tickets
Frontier
Oct 30
STL8:40 pmLambert-St Louis
22h 53m
1 stop
MCI7:33 pmKansas City
Nov 1
MCI8:28 pmKansas City
13h 39m
1 stop
STL10:07 amLambert-St Louis
$157
Find similar
Frontier
Nov 14
STL7:45 pmLambert-St Louis
23h 48m
1 stop
MCI7:33 pmKansas City
Nov 16
MCI8:28 pmKansas City
12h 39m
1 stop
STL9:07 amLambert-St Louis
$159
Find similar
Frontier
Oct 30
STL8:40 pmLambert-St Louis
22h 53m
1 stop
MCI7:33 pmKansas City
Nov 3
MCI8:28 pmKansas City
12h 39m
1 stop
STL9:07 amLambert-St Louis
$169
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Kansas City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 25, 2025.
Use the filters below to find and compare flights from St. Louis to Kansas City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 10/30

8:40 pm-7:33 pm

1 stop22h 53m

Kansas City

Sat 11/1

8:28 pm-10:07 am

1 stop13h 39m

$157

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 11/14

7:45 pm-7:33 pm

1 stop23h 48m

Kansas City

Sun 11/16

8:28 pm-9:07 am

1 stop12h 39m

$159

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 10/30

8:40 pm-7:33 pm

1 stop22h 53m

Kansas City

Mon 11/3

8:28 pm-9:07 am

1 stop12h 39m

$169

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 10/29

8:40 pm-7:33 pm

1 stop22h 53m

Kansas City

Sat 11/1

8:28 pm-10:07 am

1 stop13h 39m

$184

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 12/10

10:20 am-11:30 am

Nonstop1h 10m

Kansas City

Wed 12/17

12:00 pm-1:00 pm

Nonstop1h 00m

$191

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 10/2

7:55 pm-1:48 pm

1 stop17h 53m

Kansas City

Mon 10/13

5:11 pm-10:02 am

1 stop16h 51m

$214

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 9/25

10:35 am-10:18 am

1 stop23h 43m

Kansas City

Fri 9/26

3:01 pm-9:06 am

1 stop18h 05m

$216

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 10/23

9:50 am-10:55 am

Nonstop1h 05m

Kansas City

Tue 10/28

10:40 am-11:45 am

Nonstop1h 05m

$221

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Tue 10/28

10:57 am-8:45 pm

2 stops33h 48m

Kansas City

Mon 11/3

5:11 pm-10:02 am

1 stop16h 51m

$280

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 10/30

10:57 am-4:16 pm

1 stop29h 19m

Kansas City

Wed 11/5

10:09 am-11:01 am

2 stops24h 52m

$285

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Kansas City from

How to get the cheapest flight ticket from St. Louis to Kansas City

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Kansas City?

In general, March is the cheapest month to fly from St. Louis to Kansas City. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $132. If you’re not able to fly to Kansas City in March, then June is your next best option. Flight prices from St. Louis to Kansas City during June average around $214.

What is the cheapest day to depart on your flight to Kansas City?

The cheapest day to depart on your flight to Kansas City is on a Saturday when prices can be found for as low as $335. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Kansas City on a Sunday will generally be more expensive and average around $503. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Kansas City?

Flying to Kansas City from St. Louis in the evening is the least expensive time of day to depart. momondo users have found prices as low as $351 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around $401. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Lambert-St Louis to Kansas City flight route?

Fly from Lambert-St Louis to Kansas City for the best Lambert-St Louis - Kansas City flight prices

What cabin class options are available on Lambert-St Louis to Kansas City flights?

There are 1 cabin classes available to choose from on Lambert-St Louis to Kansas City flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Kansas City flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Kansas City.

How have St. Louis to Kansas City flight prices changed over time?

As of August 2025, prices for St. Louis to Kansas City flights are approximately 341% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Kansas City

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Kansas City according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Kansas City (STL to MCI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Kansas City

Best Price Found

$58

Fastest flight time

1h 05m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Kansas City

1 airport
The best one-way flight to Kansas City from St. Louis in the past 72 hours is $58. The best round-trip flight deal from St. Louis to Kansas City found on momondo in the last 72 hours is $208.
The fastest flight from St. Louis to Kansas City takes 1h 05m
Direct flights go from St. Louis to Kansas City on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near Kansas City: Kansas City (MCI)
Search flight deals

  • How far is Lambert-St Louis to Kansas City by plane?

    There are 237.1 mi between Lambert-St Louis and Kansas City. By plane, this route typically takes 1h 05m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Kansas City Airport?

    Prices for flights from Lambert-St Louis Airport to Kansas City Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Kansas City Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Kansas City Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Kansas City Airport.

  • What documentation or ID do you need to fly to Kansas City Airport?

    The travel and health documents you'll need for your trip to Kansas City Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kansas City Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Kansas City?

  • What is the most popular airline from St. Louis to Kansas City?

Best airlines flying from St. Louis to Kansas City

Compare and see reviews for airlines that fly from St. Louis to Kansas City with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $97Free CancellationRating
8.0
4,243 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Kansas City

    Southwest flies from St. Louis to Kansas City around 12 times per week, with 4,243 momondo users rating the airline 8.0/10. The cheapest Southwest deal from St. Louis to Kansas City in the last 72 hours was $97 (round-trip), much lower than the average airfare cost of $331 for Southwest flights on this route.

Traveling to a place near Kansas City?

Book flights to Kansas City if you plan to visit one of these locations
Overland Park
Topeka
Kansas City
Lawrence
Independence
Olathe
Liberty
Blue Springs
Lenexa
Lee's Summit
Shawnee
Excelsior Springs
Leavenworth
North Kansas City
Warrensburg
Belton
Gladstone
Cameron
Missouri City
Lansing

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Kansas City?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kansas City from St. Louis.

Can I find flights from St. Louis to Kansas City with flexible booking policies on momondo?

momondo does allow users to show only those flights to Kansas City from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Kansas City?

Once all potential St. Louis to Kansas City flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Kansas City right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Kansas City from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Kansas City trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 8/30
Sat 9/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States