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Cheap flights from Kansas to St. Louis from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kansas to St. Louis departing on 9/10. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Kansas to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:32 pm - 7:17 pmMCI  Kansas City-STL Lambert-St Louis
22h 45m1 stop Denver Intl
Frontier Logo
8:10 pm - 7:37 pmSTL  Lambert-St Louis-MCI Kansas City
23h 27m1 stop Denver Intl
$149Frontier
Thu, Sep 10 - Mon, Sep 14
Frontier Logo
10:30 pm - 11:17 amMCI  Kansas City-STL Lambert-St Louis
12h 47m1 stop Las Vegas Harry Reid Intl
Frontier Logo
12:17 pm - 9:45 pmSTL  Lambert-St Louis-MCI Kansas City
9h 28m1 stop Las Vegas Harry Reid Intl
$162Frontier
Thu, Sep 10 - Mon, Sep 14
Frontier Logo
8:32 pm - 1:10 pmMCI  Kansas City-STL Lambert-St Louis
40h 38m2 stops Denver Intl Atlanta Hartsfield-Jackson
Frontier Logo
8:10 pm - 7:37 pmSTL  Lambert-St Louis-MCI Kansas City
23h 27m1 stop Denver Intl
$208Frontier
Sat, Sep 12 - Mon, Sep 14
Southwest Logo
2:25 pm - 3:25 pmMCI  Kansas City-STL Lambert-St Louis
1h 00mnonstop
Southwest Logo
11:40 am - 12:45 pmSTL  Lambert-St Louis-MCI Kansas City
1h 05mnonstop
$217Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
2:25 pm - 3:25 pmMCI  Kansas City-STL Lambert-St Louis
1h 00mnonstop
Southwest Logo
2:50 pm - 3:55 pmSTL  Lambert-St Louis-MCI Kansas City
1h 05mnonstop
$225Southwest
Sat, Sep 5 - Tue, Sep 8
American Airlines Logo
10:40 am - 4:14 pmTUL  Tulsa-STL Lambert-St Louis
5h 34m1 stop Dallas/Fort Worth
American Airlines Logo
6:45 pm - 11:57 pmSTL  Lambert-St Louis-TUL Tulsa
5h 12m1 stop Dallas/Fort Worth
$234American Airlines
Sat, Sep 5 - Sun, Sep 6
American Airlines Logo
5:00 am - 9:24 amTUL  Tulsa-STL Lambert-St Louis
4h 24m1 stop Dallas/Fort Worth
American Airlines Logo
3:34 pm - 9:51 pmSTL  Lambert-St Louis-TUL Tulsa
6h 17m1 stop Dallas/Fort Worth
$249American Airlines
Tue, Sep 8 - Wed, Sep 9
Southwest Logo
6:05 pm - 10:45 pmTUL  Tulsa-STL Lambert-St Louis
4h 40m1 stop Dallas Love Field
Southwest Logo
5:10 am - 10:20 amSTL  Lambert-St Louis-TUL Tulsa
5h 10m1 stop Dallas Love Field
$257Southwest
Thu, Oct 1 - Thu, Oct 8
United Airlines Logo
2:49 pm - 9:40 pmICT  Wichita Eisenhower National-STL Lambert-St Louis
6h 51m1 stop Chicago O'Hare Intl
United Airlines Logo
6:15 am - 11:40 amSTL  Lambert-St Louis-ICT Wichita Eisenhower National
5h 25m1 stop Houston George Bush Intcntl
$266United Airlines
Tue, Oct 27 - Wed, Oct 28
United Airlines Logo
7:30 am - 11:57 amICT  Wichita Eisenhower National-STL Lambert-St Louis
4h 27m1 stop Chicago O'Hare Intl
United Airlines Logo
8:35 am - 1:53 pmSTL  Lambert-St Louis-ICT Wichita Eisenhower National
5h 18m1 stop Houston George Bush Intcntl
$271United Airlines
Wed, Sep 16 - Wed, Sep 23

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Frontier flights from Kansas to St. Louis

Our best Frontier deals on Kansas to St. Louis flight tickets
Frontier
Sep 10
MCI8:32 pmKansas City
22h 45m
1 stop
STL7:17 pmLambert-St Louis
Sep 14
STL8:10 pmLambert-St Louis
23h 27m
1 stop
MCI7:37 pmKansas City
$149
Frontier
Sep 10
MCI10:30 pmKansas City
12h 47m
1 stop
STL11:17 amLambert-St Louis
Sep 14
STL12:17 pmLambert-St Louis
9h 28m
1 stop
MCI9:45 pmKansas City
$162
Frontier
Sep 10
MCI10:30 pmKansas City
20h 47m
2 stops
STL7:17 pmLambert-St Louis
Sep 14
STL8:10 pmLambert-St Louis
23h 27m
1 stop
MCI7:37 pmKansas City
$208

Southwest flights from Kansas to St. Louis

Our best Southwest deals on Kansas to St. Louis flight tickets
Southwest
Sep 5
MCI2:25 pmKansas City
1h 00m
STL3:25 pmLambert-St Louis
Sep 6
STL11:40 amLambert-St Louis
1h 05m
MCI12:45 pmKansas City
$217
Southwest
Sep 5
MCI2:25 pmKansas City
1h 00m
STL3:25 pmLambert-St Louis
Sep 8
STL2:50 pmLambert-St Louis
1h 05m
MCI3:55 pmKansas City
$225
Southwest
Sep 5
MCI3:10 pmKansas City
5h 35m
1 stop
STL8:45 pmLambert-St Louis
Sep 6
STL11:40 amLambert-St Louis
1h 05m
MCI12:45 pmKansas City
$226

momondo Fare Finder

 
Customize your flight search to find flights from Kansas to St. Louis 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 18, 2026.
Use the filters below to find and compare flights from Kansas to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CitySt. Louis

MCI Kansas City - STL Lambert-St Louis

MCISTL

Kansas City

Thu 9/10

8:32 pm-7:17 pm

1 stop22h 45m

Lambert-St Louis

Mon 9/14

8:10 pm-7:37 pm

1 stop23h 27m

$149

Kansas CitySt. Louis

MCI Kansas City - STL Lambert-St Louis

MCISTL

Kansas City

Thu 9/10

10:30 pm-11:17 am

1 stop12h 47m

Lambert-St Louis

Mon 9/14

12:17 pm-9:45 pm

1 stop9h 28m

$162

Kansas CitySt. Louis

MCI Kansas City - STL Lambert-St Louis

MCISTL

Kansas City

Sat 9/12

8:32 pm-1:10 pm

2 stops40h 38m

Lambert-St Louis

Mon 9/14

8:10 pm-7:37 pm

1 stop23h 27m

$208
Quickest round-trip

Kansas CitySt. Louis

MCI Kansas City - STL Lambert-St Louis

MCISTL

Kansas City

Sat 9/5

2:25 pm-3:25 pm

Nonstop1h 00m

Lambert-St Louis

Sun 9/6

11:40 am-12:45 pm

Nonstop1h 05m

$217

Kansas CitySt. Louis

MCI Kansas City - STL Lambert-St Louis

MCISTL

Kansas City

Sat 9/5

2:25 pm-3:25 pm

Nonstop1h 00m

Lambert-St Louis

Tue 9/8

2:50 pm-3:55 pm

Nonstop1h 05m

$225

TulsaSt. Louis

TUL Tulsa - STL Lambert-St Louis

TULSTL

Tulsa

Sat 9/5

10:40 am-4:14 pm

1 stop5h 34m

Lambert-St Louis

Sun 9/6

6:45 pm-11:57 pm

1 stop5h 12m

$234

TulsaSt. Louis

TUL Tulsa - STL Lambert-St Louis

TULSTL

Tulsa

Tue 9/8

5:00 am-9:24 am

1 stop4h 24m

Lambert-St Louis

Wed 9/9

3:34 pm-9:51 pm

1 stop6h 17m

$249

TulsaSt. Louis

TUL Tulsa - STL Lambert-St Louis

TULSTL

Tulsa

Thu 10/1

6:05 pm-10:45 pm

1 stop4h 40m

Lambert-St Louis

Thu 10/8

5:10 am-10:20 am

1 stop5h 10m

$257

WichitaSt. Louis

ICT Wichita Eisenhower National - STL Lambert-St Louis

ICTSTL

Wichita Eisenhower National

Tue 10/27

2:49 pm-9:40 pm

1 stop6h 51m

Lambert-St Louis

Wed 10/28

6:15 am-11:40 am

1 stop5h 25m

$266

WichitaSt. Louis

ICT Wichita Eisenhower National - STL Lambert-St Louis

ICTSTL

Wichita Eisenhower National

Wed 9/16

7:30 am-11:57 am

1 stop4h 27m

Lambert-St Louis

Wed 9/23

8:35 am-1:53 pm

1 stop5h 18m

$271

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 St. Louis from

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

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 St. Louis?

In general, February is the cheapest month to fly from Kansas to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $181. The month of September is another great option to travel to St. Louis, with average flight prices from Kansas averaging around $278.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $334. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $465. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Kansas in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $420 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $446 per ticket.

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

Fly from Wichita Eisenhower National to Lambert-St Louis for the best Kansas - Lambert-St Louis flight prices

What cabin class options are available on Kansas to St. Louis flights?

There is only 1 cabin class available to choose from on Kansas to St. Louis 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 Kansas to St. Louis flights?

You could potentially save up to 70% on your flight if you consider stops on a Kansas to St. Louis flight.

Cheap Kansas to St. Louis flight deals and tips

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

Best Price Found

$64

Fastest flight time

1h 00m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Kansas in the past 72 hours is $64. The best round-trip flight deal from Kansas to St. Louis found on momondo in the last 72 hours is $149.
The fastest flight from Kansas to St. Louis takes 1h 00m
Direct flights go from Kansas to St. Louis on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in St. Louis. From Kansas there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Kansas to St. Louis

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

    Prices for flights from Kansas to Lambert-St Louis Airport were last updated today.

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

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

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis 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 Lambert-St Louis 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 Kansas to St. Louis?

Best airlines flying from Kansas to St. Louis

Compare and see reviews for airlines that fly from Kansas to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $97Free CancellationRating
8.0
4,218 reviews
Search Southwest flights
United AirlinesPriceFrom $209Free CancellationRating
7.4
10,106 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Maryland Heights
St. Peters
Hermann
Collinsville
Florissant
Alton
O'Fallon
Farmington
Clayton
Fenton
Festus
Wentzville
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Kansas to St. Louis. momondo saves you time and could save you money on your trip.

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

Yes. All flights to St. Louis from Kansas on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Kansas.

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

Price alerts on flights to St. Louis from Kansas are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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