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Cheap flights from St. Louis to Kansas City from $90

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 3/28. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:50 pm - 12:12 am
STL
-
MCI
5h 22m
1 stop
American Airlines Logo
10:54 am - 5:13 pm
MCI
-
STL
6h 19m
1 stop
$179American Airlines
Sat, Mar 28 - Sat, Apr 4
Southwest Logo
8:25 am - 9:35 am
STL
-
MCI
1h 10mnonstop
Southwest Logo
5:20 pm - 12:05 am
MCI
-
STL
6h 45m
1 stop
$203Southwest
Sat, Mar 28 - Sat, Apr 4
Southwest Logo
8:25 am - 9:35 am
STL
-
MCI
1h 10mnonstop
Southwest Logo
5:45 pm - 6:50 pm
MCI
-
STL
1h 05mnonstop
$213Southwest
Sat, Mar 28 - Sat, Apr 4
Southwest Logo
8:25 am - 9:35 am
STL
-
MCI
1h 10mnonstop
Southwest Logo
7:45 am - 1:25 pm
MCI
-
STL
5h 40m
1 stop
$243Southwest
Fri, Mar 27 - Fri, Apr 3
United Airlines Logo
7:41 am - 2:20 pm
STL
-
MCI
6h 39m
1 stop
United Airlines Logo
6:15 am - 10:45 am
MCI
-
STL
4h 30m
1 stop
$253United Airlines
Fri, Mar 27 - Fri, Apr 3
American Airlines Logo
6:11 pm - 12:07 am
STL
-
MCI
5h 56m
1 stop
American Airlines Logo
5:35 am - 11:47 am
MCI
-
STL
6h 12m
1 stop
$261American Airlines
Mon, Apr 20 - Wed, Apr 29
Multiple Airlines Logo
8:16 pm - 7:58 pm
STL
-
MCI
23h 42m
1 stop
Multiple Airlines Logo
12:24 pm - 6:50 am
MCI
-
STL
42h 26m
2 stops
$280Multiple Airlines
Fri, Apr 3 - Mon, Apr 13
Frontier Logo
8:12 pm - 7:55 pm
STL
-
MCI
23h 43m
1 stop
Frontier Logo
8:43 pm - 9:48 am
MCI
-
STL
13h 05m
1 stop
$289Frontier
Fri, Mar 27 - Fri, Apr 3
United Airlines Logo
5:00 am - 10:29 am
STL
-
MCI
5h 29m
1 stop
United Airlines Logo
4:29 pm - 10:28 pm
MCI
-
STL
5h 59m
1 stop
$293United Airlines
Sat, Mar 28 - Sat, Apr 4
Southwest Logo
8:25 am - 9:35 am
STL
-
MCI
1h 10mnonstop
Southwest Logo
5:35 pm - 6:40 pm
MCI
-
STL
1h 05mnonstop
$302Southwest
Fri, Mar 27 - Fri, Apr 3

American Airlines flights from St. Louis to Kansas City

Our best American Airlines deals on St. Louis to Kansas City flight tickets
American Airlines
Mar 28
STL6:50 pmLambert-St Louis
5h 22m
1 stop
MCI12:12 amKansas City
Apr 4
MCI10:54 amKansas City
6h 19m
1 stop
STL5:13 pmLambert-St Louis
$179
American Airlines
Apr 20
STL6:11 pmLambert-St Louis
5h 56m
1 stop
MCI12:07 amKansas City
Apr 29
MCI5:35 amKansas City
6h 12m
1 stop
STL11:47 amLambert-St Louis
$261
American Airlines
Mar 10
STL2:37 pmLambert-St Louis
4h 50m
1 stop
MCI7:27 pmKansas City
Mar 12
MCI5:00 amKansas City
5h 03m
1 stop
STL10:03 amLambert-St Louis
$622

United Airlines flights from St. Louis to Kansas City

Our best United Airlines deals on St. Louis to Kansas City flight tickets
United Airlines
Mar 27
STL7:41 amLambert-St Louis
6h 39m
1 stop
MCI2:20 pmKansas City
Apr 3
MCI6:15 amKansas City
4h 30m
1 stop
STL10:45 amLambert-St Louis
$253
United Airlines
May 4
STL5:28 pmLambert-St Louis
6h 03m
1 stop
MCI11:31 pmKansas City
May 6
MCI5:15 pmKansas City
3h 58m
1 stop
STL9:13 pmLambert-St Louis
$268
United Airlines
Mar 28
STL5:00 amLambert-St Louis
5h 29m
1 stop
MCI10:29 amKansas City
Apr 4
MCI4:29 pmKansas City
5h 59m
1 stop
STL10:28 pmLambert-St Louis
$293

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 March 2, 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

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 3/28

6:50 pm-12:12 am

1 stop5h 22m

Kansas City

Sat 4/4

10:54 am-5:13 pm

1 stop6h 19m

$179

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 3/28

8:25 am-9:35 am

Nonstop1h 10m

Kansas City

Sat 4/4

5:20 pm-12:05 am

1 stop6h 45m

$203

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 3/28

8:25 am-9:35 am

Nonstop1h 10m

Kansas City

Sat 4/4

5:45 pm-6:50 pm

Nonstop1h 05m

$213

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 3/27

8:25 am-9:35 am

Nonstop1h 10m

Kansas City

Fri 4/3

7:45 am-1:25 pm

1 stop5h 40m

$243

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 3/27

7:41 am-2:20 pm

1 stop6h 39m

Kansas City

Fri 4/3

6:15 am-10:45 am

1 stop4h 30m

$253

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Mon 4/20

6:11 pm-12:07 am

1 stop5h 56m

Kansas City

Wed 4/29

5:35 am-11:47 am

1 stop6h 12m

$261

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 4/3

8:16 pm-7:58 pm

1 stop23h 42m

Kansas City

Mon 4/13

12:24 pm-6:50 am

2 stops42h 26m

$280

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 3/27

8:12 pm-7:55 pm

1 stop23h 43m

Kansas City

Fri 4/3

8:43 pm-9:48 am

1 stop13h 05m

$289

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 3/28

5:00 am-10:29 am

1 stop5h 29m

Kansas City

Sat 4/4

4:29 pm-10:28 pm

1 stop5h 59m

$293

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 3/27

8:25 am-9:35 am

Nonstop1h 10m

Kansas City

Fri 4/3

5:35 pm-6:40 pm

Nonstop1h 05m

$302

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 day to depart on your flight to Kansas City?

The cheapest day to depart on your flight to Kansas City is on a Wednesday when prices can be found for as low as $283. 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 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 $377. 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.

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

$226

Fastest flight time

1h 05m

Direct flights

Mon, Tue, Wed, Thu, 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 $226. The best round-trip flight deal from St. Louis to Kansas City found on momondo in the last 72 hours is $353.
The fastest flight from St. Louis to Kansas City takes 1h 05m
Direct flights go from St. Louis to Kansas City on Monday, Tuesday, Wednesday, Thursday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport in Kansas City. From St. Louis there are direct flights to 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
4,302 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Kansas City

    Southwest flies from St. Louis to Kansas City around 3 times per week, with 4,302 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 $382 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
Olathe
Liberty
Lenexa
Blue Springs
North Kansas City
Lee's Summit
Warrensburg
Leavenworth
Gladstone
Belton
Excelsior Springs
Shawnee
Cameron
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

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