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Cheap flights from Kansas to St. Louis from $72

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 2/27. 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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0 bags

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Find the cheapest flights from Kansas to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:41 pm - 2:46 pm
MCI
-
STL
18h 05m1 stop
Frontier Logo
1:40 pm - 7:51 pm
STL
-
MCI
6h 11m1 stop
$152Frontier
Fri, Jan 23 - Mon, Jan 26
Multiple Airlines Logo
7:00 am - 8:50 pm
MCI
-
STL
13h 50m1 stop
Multiple Airlines Logo
1:40 pm - 7:51 pm
STL
-
MCI
6h 11m1 stop
$196Multiple Airlines
Mon, Jan 26 - Mon, Feb 2
Frontier Logo
8:41 pm - 6:51 am
MCI
-
STL
34h 10m2 stops
Frontier Logo
1:40 pm - 7:51 pm
STL
-
MCI
6h 11m1 stop
$199Frontier
Mon, Jan 26 - Mon, Feb 2
Multiple Airlines Logo
7:00 am - 8:50 pm
MCI
-
STL
13h 50m1 stop
Multiple Airlines Logo
5:42 pm - 4:09 pm
STL
-
MCI
22h 27m1 stop
$213Multiple Airlines
Mon, Feb 2 - Tue, Feb 3
American Airlines Logo
12:46 pm - 6:14 pm
ICT
-
STL
5h 28m1 stop
American Airlines Logo
5:14 am - 9:40 am
STL
-
ICT
4h 26m1 stop
$229American Airlines
Wed, Feb 11 - Tue, Feb 17
United Airlines Logo
5:45 am - 1:16 pm
MCI
-
STL
7h 31m1 stop
United Airlines Logo
6:00 pm - 11:30 pm
STL
-
MCI
5h 30m1 stop
$273United Airlines
Wed, Jan 28 - Wed, Jan 28
American Airlines Logo
12:21 pm - 7:25 pm
ICT
-
STL
7h 04m1 stop
American Airlines Logo
4:06 pm - 9:42 pm
STL
-
ICT
5h 36m1 stop
$279American Airlines
Thu, Feb 12 - Tue, Feb 17
United Airlines Logo
9:00 am - 3:52 pm
ICT
-
STL
6h 52m1 stop
United Airlines Logo
8:45 am - 4:29 pm
STL
-
ICT
7h 44m1 stop
$289United Airlines
Tue, Jan 27 - Wed, Jan 28
Southwest Logo
2:55 pm - 12:30 am
TUL
-
STL
9h 35m1 stop
Southwest Logo
7:45 pm - 9:05 pm
STL
-
TUL
1h 20mnonstop
$291Southwest
Sun, Mar 1 - Wed, Mar 4
Southwest Logo
10:45 am - 5:55 pm
TUL
-
STL
7h 10m2 stops
Southwest Logo
5:20 pm - 10:20 pm
STL
-
TUL
5h 00m1 stop
$294Southwest
Tue, Jun 2 - Tue, Jun 16

Frontier flights from Kansas to St. Louis

Our best Frontier deals on Kansas to St. Louis flight tickets
Frontier
Jan 23
MCI8:41 pmKansas City
18h 05m
1 stop
STL2:46 pmLambert-St Louis
Jan 26
STL1:40 pmLambert-St Louis
6h 11m
1 stop
MCI7:51 pmKansas City
$152
Find similar
Frontier
Jan 26
MCI8:41 pmKansas City
34h 10m
2 stops
STL6:51 amLambert-St Louis
Feb 2
STL1:40 pmLambert-St Louis
6h 11m
1 stop
MCI7:51 pmKansas City
$199
Find similar
Frontier
Jan 18
MCI8:27 pmKansas City
22h 24m
1 stop
STL6:51 pmLambert-St Louis
Jan 25
STL9:27 pmLambert-St Louis
22h 24m
2 stops
MCI7:51 pmKansas City
$233
Find similar

Alaska Airlines flights from Kansas to St. Louis

Our best Alaska Airlines deals on Kansas to St. Louis flight tickets
Alaska Airlines
Jun 17
MCI5:00 pmKansas City
24h 13m
1 stop
STL5:13 pmLambert-St Louis
Jun 22
STL6:20 pmLambert-St Louis
21h 46m
1 stop
MCI4:06 pmKansas City
$544
Find similar
Alaska Airlines
May 28
TUL5:32 pmTulsa
25h 28m
1 stop
STL7:00 pmLambert-St Louis
May 30
STL6:00 amLambert-St Louis
10h 55m
1 stop
TUL4:55 pmTulsa
$684
Find similar

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 December 28, 2025.
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

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Fri 1/23

8:41 pm-2:46 pm

1 stop18h 05m

Lambert-St Louis

Mon 1/26

1:40 pm-7:51 pm

1 stop6h 11m

$152

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 1/26

7:00 am-8:50 pm

1 stop13h 50m

Lambert-St Louis

Mon 2/2

1:40 pm-7:51 pm

1 stop6h 11m

$196

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 1/26

8:41 pm-6:51 am

2 stops34h 10m

Lambert-St Louis

Mon 2/2

1:40 pm-7:51 pm

1 stop6h 11m

$199

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 2/2

7:00 am-8:50 pm

1 stop13h 50m

Lambert-St Louis

Tue 2/3

5:42 pm-4:09 pm

1 stop22h 27m

$213

WichitaSt. Louis

ICT - STL

ICTSTL

Wichita Eisenhower National

Wed 2/11

12:46 pm-6:14 pm

1 stop5h 28m

Lambert-St Louis

Tue 2/17

5:14 am-9:40 am

1 stop4h 26m

$229

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 1/28

5:45 am-1:16 pm

1 stop7h 31m

Lambert-St Louis

Wed 1/28

6:00 pm-11:30 pm

1 stop5h 30m

$273

WichitaSt. Louis

ICT - STL

ICTSTL

Wichita Eisenhower National

Thu 2/12

12:21 pm-7:25 pm

1 stop7h 04m

Lambert-St Louis

Tue 2/17

4:06 pm-9:42 pm

1 stop5h 36m

$279

WichitaSt. Louis

ICT - STL

ICTSTL

Wichita Eisenhower National

Tue 1/27

9:00 am-3:52 pm

1 stop6h 52m

Lambert-St Louis

Wed 1/28

8:45 am-4:29 pm

1 stop7h 44m

$289

TulsaSt. Louis

TUL - STL

TULSTL

Tulsa

Sun 3/1

2:55 pm-12:30 am

1 stop9h 35m

Lambert-St Louis

Wed 3/4

7:45 pm-9:05 pm

Nonstop1h 20m

$291

TulsaSt. Louis

TUL - STL

TULSTL

Tulsa

Tue 6/2

10:45 am-5:55 pm

2 stops7h 10m

Lambert-St Louis

Tue 6/16

5:20 pm-10:20 pm

1 stop5h 00m

$294

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, April 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 $144. The month of August is another great option to travel to St. Louis, with average flight prices from Kansas averaging around $193.

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 $381. 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 Sunday because tickets tend to average around $447. 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 $401 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 $420 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 Lambert-St Louis flights?

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

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

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

$203

Fastest flight time

1h 05m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Kansas in the past 72 hours is $203. The best round-trip flight deal from Kansas to St. Louis found on momondo in the last 72 hours is $390.
The fastest flight from Kansas to St. Louis takes 1h 05m
Direct flights go from Kansas to St. Louis every day.
There is 1 airport in St. Louis. From Kansas there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • 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
4,256 reviews
Search Southwest flights
American AirlinesPriceFrom $278Free CancellationRating
7.2
11,072 reviews
Search American 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
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Glencoe
Eureka
Festus
Edwardsville
Litchfield
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.

An easier way to manage your St. Louis trip

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