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Cheap flights from St. Louis to Kansas City from $74

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 9/4. 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
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Kansas City

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:17 pm - 4:05 pmSTL  Lambert-St Louis-MCI Kansas City
21h 48m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
8:32 pm - 7:17 pmMCI  Kansas City-STL Lambert-St Louis
22h 45m1 stop Denver Intl
$166Frontier
Fri, Sep 4 - Fri, Sep 11
Frontier Logo
12:17 pm - 9:45 pmSTL  Lambert-St Louis-MCI Kansas City
9h 28m1 stop Las Vegas Harry Reid Intl
Frontier Logo
10:30 pm - 11:32 amMCI  Kansas City-STL Lambert-St Louis
13h 02m1 stop Las Vegas Harry Reid Intl
$193Frontier
Mon, Sep 21 - Mon, Sep 28
Frontier Logo
6:17 pm - 4:05 pmSTL  Lambert-St Louis-MCI Kansas City
21h 48m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
10:30 pm - 12:07 pmMCI  Kansas City-STL Lambert-St Louis
37h 37m2 stops Las Vegas Harry Reid Intl Denver Intl
$207Frontier
Fri, Sep 4 - Fri, Sep 11
Southwest Logo
2:15 pm - 3:20 pmSTL  Lambert-St Louis-MCI Kansas City
1h 05mnonstop
Southwest Logo
8:25 am - 9:30 amMCI  Kansas City-STL Lambert-St Louis
1h 05mnonstop
$217Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
2:15 pm - 3:20 pmSTL  Lambert-St Louis-MCI Kansas City
1h 05mnonstop
Southwest Logo
7:50 am - 1:45 pmMCI  Kansas City-STL Lambert-St Louis
5h 55m1 stop Washington, D.C. Reagan-National
$226Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
2:05 pm - 6:30 pmSTL  Lambert-St Louis-MCI Kansas City
4h 25m1 stop Dallas Love Field
Southwest Logo
12:00 pm - 7:55 pmMCI  Kansas City-STL Lambert-St Louis
7h 55m1 stop Washington, D.C. Reagan-National
$236Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
2:15 pm - 3:20 pmSTL  Lambert-St Louis-MCI Kansas City
1h 05mnonstop
Southwest Logo
8:25 am - 9:30 amMCI  Kansas City-STL Lambert-St Louis
1h 05mnonstop
$237Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
6:50 am - 10:55 amSTL  Lambert-St Louis-MCI Kansas City
4h 05m1 stop Dallas Love Field
Southwest Logo
8:25 am - 9:30 amMCI  Kansas City-STL Lambert-St Louis
1h 05mnonstop
$247Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
2:15 pm - 3:20 pmSTL  Lambert-St Louis-MCI Kansas City
1h 05mnonstop
Southwest Logo
7:50 am - 1:45 pmMCI  Kansas City-STL Lambert-St Louis
5h 55m1 stop Washington, D.C. Reagan-National
$247Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
2:15 pm - 3:20 pmSTL  Lambert-St Louis-MCI Kansas City
1h 05mnonstop
Southwest Logo
12:00 pm - 7:55 pmMCI  Kansas City-STL Lambert-St Louis
7h 55m1 stop Washington, D.C. Reagan-National
$247Southwest
Sat, Sep 5 - Sun, Sep 6

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United Airlines flights from St. Louis to Kansas City

Our best United Airlines deals on St. Louis to Kansas City flight tickets
United Airlines
Sep 5
STL5:30 pmLambert-St Louis
4h 14m
1 stop
MCI9:44 pmKansas City
Sep 6
MCI6:00 amKansas City
6h 02m
1 stop
STL12:02 pmLambert-St Louis
$257
United Airlines
Sep 5
STL8:40 amLambert-St Louis
6h 10m
1 stop
MCI2:50 pmKansas City
Sep 6
MCI9:14 amKansas City
7h 20m
1 stop
STL4:34 pmLambert-St Louis
$327
United Airlines
Oct 29
STL7:30 amLambert-St Louis
4h 53m
1 stop
MCI12:23 pmKansas City
Nov 2
MCI6:40 pmKansas City
3h 44m
1 stop
STL10:24 pmLambert-St Louis
$361

Frontier flights from St. Louis to Kansas City

Our best Frontier deals on St. Louis to Kansas City flight tickets
Frontier
Sep 4
STL6:17 pmLambert-St Louis
21h 48m
1 stop
MCI4:05 pmKansas City
Sep 11
MCI8:32 pmKansas City
22h 45m
1 stop
STL7:17 pmLambert-St Louis
$166
Frontier
Sep 21
STL12:17 pmLambert-St Louis
9h 28m
1 stop
MCI9:45 pmKansas City
Sep 28
MCI10:30 pmKansas City
13h 02m
1 stop
STL11:32 amLambert-St Louis
$193
Frontier
Sep 4
STL6:17 pmLambert-St Louis
21h 48m
1 stop
MCI4:05 pmKansas City
Sep 11
MCI10:30 pmKansas City
37h 37m
2 stops
STL12:07 pmLambert-St Louis
$207

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 10, 2026.
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

Cheapest round-trip

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Fri 9/4

6:17 pm-4:05 pm

1 stop21h 48m

Kansas City

Fri 9/11

8:32 pm-7:17 pm

1 stop22h 45m

$166

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Mon 9/21

12:17 pm-9:45 pm

1 stop9h 28m

Kansas City

Mon 9/28

10:30 pm-11:32 am

1 stop13h 02m

$193

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Fri 9/4

6:17 pm-4:05 pm

1 stop21h 48m

Kansas City

Fri 9/11

10:30 pm-12:07 pm

2 stops37h 37m

$207
Quickest round-trip

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Sat 9/5

2:15 pm-3:20 pm

Nonstop1h 05m

Kansas City

Sun 9/6

8:25 am-9:30 am

Nonstop1h 05m

$217

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Sat 9/5

2:15 pm-3:20 pm

Nonstop1h 05m

Kansas City

Sun 9/6

7:50 am-1:45 pm

1 stop5h 55m

$226

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Sat 9/5

2:05 pm-6:30 pm

1 stop4h 25m

Kansas City

Sun 9/6

12:00 pm-7:55 pm

1 stop7h 55m

$236

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Sat 9/5

2:15 pm-3:20 pm

Nonstop1h 05m

Kansas City

Sun 9/6

8:25 am-9:30 am

Nonstop1h 05m

$237

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Sat 9/5

6:50 am-10:55 am

1 stop4h 05m

Kansas City

Sun 9/6

8:25 am-9:30 am

Nonstop1h 05m

$247

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Sat 9/5

2:15 pm-3:20 pm

Nonstop1h 05m

Kansas City

Sun 9/6

7:50 am-1:45 pm

1 stop5h 55m

$247

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Sat 9/5

2:15 pm-3:20 pm

Nonstop1h 05m

Kansas City

Sun 9/6

12:00 pm-7:55 pm

1 stop7h 55m

$247

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, December 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 $0. If you’re not able to fly to Kansas City in December, then November is your next best option. Flight prices from St. Louis to Kansas City during November average around $179.

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 Tuesday when prices can be found for as low as $374. 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 Monday will generally be more expensive and average around $513. 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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $345 when looking at flights departing at noon. Try not to purchase tickets in the evening because they tend to be around $724. 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 St. Louis to Kansas City flights?

There is only 1 cabin class available to choose from on 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?

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

$240

Fastest flight time

1h 05m

Direct flights

Every day

Airports in Kansas City

1 airport
The best one-way flight to Kansas City from St. Louis in the past 72 hours is $240. The best round-trip flight deal from St. Louis to Kansas City found on momondo in the last 72 hours is $476.
The fastest flight from St. Louis to Kansas City takes 1h 05m
Direct flights go from St. Louis to Kansas City every day.
There is 1 airport in Kansas City. From St. Louis there are direct flights to Kansas City (MCI).
Search flight deals

Frequently asked questions about flying from St. Louis to Kansas City

  • 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 $157Free CancellationRating
8.0
4,218 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Kansas City

    Southwest flies from St. Louis to Kansas City around 14 times per week, with 4,218 momondo users rating the airline 8.0/10. The cheapest Southwest deal from St. Louis to Kansas City in the last 72 hours was $157 (round-trip), much lower than the average airfare cost of $513 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
Independence
Lawrence
Lenexa
Blue Springs
Olathe
Lee's Summit
Liberty
North Kansas City
Leavenworth
Gladstone
Belton
Shawnee
Warrensburg
Cameron
Excelsior Springs
Lansing
Missouri City

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.
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