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Cheap flights from St. Louis to Kansas City from $62

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 12/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Southwest Logo
10:30 pm - 11:40 pmSTL-MCI
1h 10mnonstop
Southwest Logo
3:35 pm - 10:20 pmMCI-STL
6h 45m1 stop
$147Southwest
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Mon, Jan 5 - Mon, Jan 26
Southwest Logo
10:30 pm - 11:40 pmSTL-MCI
1h 10mnonstop
Southwest Logo
11:00 am - 4:50 pmMCI-STL
5h 50m2 stops
$152Southwest
Find Deal
Mon, Jan 5 - Mon, Jan 26
Southwest Logo
7:10 pm - 12:15 amSTL-MCI
5h 05m1 stop
Southwest Logo
11:00 am - 4:50 pmMCI-STL
5h 50m2 stops
$162Southwest
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Mon, Jan 5 - Mon, Jan 26
Multiple Airlines Logo
6:21 pm - 6:28 pmSTL-MCI
24h 07m1 stop
Multiple Airlines Logo
12:31 pm - 11:24 amMCI-STL
22h 53m1 stop
$208Multiple Airlines
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Sun, Nov 9 - Thu, Nov 13
Frontier Logo
2:12 pm - 10:17 amSTL-MCI
20h 05m2 stops
Frontier Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
$214Frontier
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Thu, Nov 13 - Mon, Nov 17
Frontier Logo
11:07 am - 10:17 amSTL-MCI
23h 10m1 stop
Frontier Logo
8:28 pm - 9:07 amMCI-STL
12h 39m1 stop
$223Frontier
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Thu, Nov 13 - Mon, Nov 17
Multiple Airlines Logo
7:45 pm - 7:33 pmSTL-MCI
23h 48m1 stop
Multiple Airlines Logo
6:00 am - 1:17 pmMCI-STL
7h 17m1 stop
$263Multiple Airlines
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Fri, Nov 14 - Sun, Nov 16
American Airlines Logo
6:00 am - 2:00 pmSTL-MCI
8h 00m1 stop
American Airlines Logo
5:35 pm - 10:34 pmMCI-STL
4h 59m1 stop
$329American Airlines
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Mon, Nov 24 - Mon, Dec 1
American Airlines Logo
6:00 am - 10:07 amSTL-MCI
4h 07m1 stop
American Airlines Logo
1:56 pm - 7:29 pmMCI-STL
5h 33m1 stop
$331American Airlines
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Wed, Jan 7 - Thu, Jan 8
United Airlines Logo
4:37 pm - 4:05 pmSTL-MCI
23h 28m1 stop
United Airlines Logo
8:00 am - 10:45 pmMCI-STL
14h 45m1 stop
$475United Airlines
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Wed, Dec 10 - Wed, Dec 17

Southwest flights from St. Louis to Kansas City

Our best Southwest deals on St. Louis to Kansas City flight tickets
Southwest
Jan 5
STL10:30 pmLambert-St Louis
1h 10m
MCI11:40 pmKansas City
Jan 26
MCI3:35 pmKansas City
6h 45m
1 stop
STL10:20 pmLambert-St Louis
$147
Find similar
Southwest
Jan 5
STL10:30 pmLambert-St Louis
1h 10m
MCI11:40 pmKansas City
Jan 26
MCI11:00 amKansas City
5h 50m
2 stops
STL4:50 pmLambert-St Louis
$152
Find similar
Southwest
Jan 5
STL7:10 pmLambert-St Louis
5h 05m
1 stop
MCI12:15 amKansas City
Jan 26
MCI11:00 amKansas City
5h 50m
2 stops
STL4:50 pmLambert-St Louis
$162
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Frontier flights from St. Louis to Kansas City

Our best Frontier deals on St. Louis to Kansas City flight tickets
Frontier
Nov 13
STL2:12 pmLambert-St Louis
20h 05m
2 stops
MCI10:17 amKansas City
Nov 17
MCI8:28 pmKansas City
12h 39m
1 stop
STL9:07 amLambert-St Louis
$214
Find similar
Frontier
Nov 13
STL11:07 amLambert-St Louis
23h 10m
1 stop
MCI10:17 amKansas City
Nov 17
MCI8:28 pmKansas City
12h 39m
1 stop
STL9:07 amLambert-St Louis
$223
Find similar
Frontier
Nov 9
STL5:12 pmLambert-St Louis
17h 05m
2 stops
MCI10:17 amKansas City
Nov 13
MCI12:31 pmKansas City
22h 53m
1 stop
STL11:24 amLambert-St Louis
$251
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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 October 27, 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

Mon 1/5

10:30 pm-11:40 pm

Nonstop1h 10m

Kansas City

Mon 1/26

3:35 pm-10:20 pm

1 stop6h 45m

$147

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 1/5

10:30 pm-11:40 pm

Nonstop1h 10m

Kansas City

Mon 1/26

11:00 am-4:50 pm

2 stops5h 50m

$152

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 1/5

7:10 pm-12:15 am

1 stop5h 05m

Kansas City

Mon 1/26

11:00 am-4:50 pm

2 stops5h 50m

$162

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sun 11/9

6:21 pm-6:28 pm

1 stop24h 07m

Kansas City

Thu 11/13

12:31 pm-11:24 am

1 stop22h 53m

$208

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 11/13

2:12 pm-10:17 am

2 stops20h 05m

Kansas City

Mon 11/17

8:28 pm-9:07 am

1 stop12h 39m

$214

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Thu 11/13

11:07 am-10:17 am

1 stop23h 10m

Kansas City

Mon 11/17

8:28 pm-9:07 am

1 stop12h 39m

$223

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

6:00 am-1:17 pm

1 stop7h 17m

$263

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 11/24

6:00 am-2:00 pm

1 stop8h 00m

Kansas City

Mon 12/1

5:35 pm-10:34 pm

1 stop4h 59m

$329

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 1/7

6:00 am-10:07 am

1 stop4h 07m

Kansas City

Thu 1/8

1:56 pm-7:29 pm

1 stop5h 33m

$331

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 12/10

4:37 pm-4:05 pm

1 stop23h 28m

Kansas City

Wed 12/17

8:00 am-10:45 pm

1 stop14h 45m

$475

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, 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 Wednesday will generally be more expensive and average around $488. 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 afternoon 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 afternoon. Try not to purchase tickets in the evening because they tend to be around $496. 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 is only 1 cabin class 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.

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

As of October 2025, prices for St. Louis to Kansas City flights are approximately 44% cheaper 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

$195

Fastest flight time

1h 05m

Direct flights

Mon, Tue, 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 $195. The best round-trip flight deal from St. Louis to Kansas City found on momondo in the last 72 hours is $299.
The fastest flight from St. Louis to Kansas City takes 1h 05m
Direct flights go from St. Louis to Kansas City on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near Kansas City: Kansas City (MCI)
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  • 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
4,236 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Kansas City

    Southwest flies from St. Louis to Kansas City around 11 times per week, with 4,236 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 $330 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
Topeka
Overland Park
Kansas City
Independence
Lawrence
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

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