What is the cheapest airline that flies from Lambert-St Louis to Missouri?

Southwest and United Airlines are the most popular carriers operating from Lambert-St Louis to Missouri

How many flights depart from St. Louis to Missouri on average per week?

As of September 2026, 6 flights take off from St. Louis and land in Missouri each week. The most common flight departure day for this route is Tue, with 50% of weekly flights taking off on this day.

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

Prices for flights from Lambert-St Louis Airport to Missouri refresh daily.

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

There is 1 operator available for flights from Lambert-St Louis Airport to Missouri as of September 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Missouri?

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 Missouri.

What documentation or ID do you need to fly to Missouri?

The travel and health documents you'll need for your trip to Missouri 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 Missouri. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$111 Cheap Flights from St. Louis to Missouri in 2026

Find the cheapest flights from St. Louis to Missouri

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:10 pm - 7:37 pmSTL Lambert-St Louis-MCI Kansas City

23h 27m1 stop Denver Intl

10:30 pm - 11:17 amMCI Kansas City-STL Lambert-St Louis

12h 47m1 stop Las Vegas Harry Reid Intl

$250Frontier

Wed, Sep 23 - Sun, Sep 27

12:17 pm - 9:45 pmSTL Lambert-St Louis-MCI Kansas City

9h 28m1 stop Las Vegas Harry Reid Intl

8:32 pm - 7:17 pmMCI Kansas City-STL Lambert-St Louis

22h 45m1 stop Denver Intl

$270Frontier

Mon, Sep 21 - Fri, Sep 25

12:40 pm - 1:45 pmSTL Lambert-St Louis-MCI Kansas City

1h 05mnonstop

8:15 am - 9:30 amMCI Kansas City-STL Lambert-St Louis

1h 15mnonstop

$277Southwest

Tue, Dec 1 - Thu, Dec 3

8:30 am - 9:35 amSTL Lambert-St Louis-MCI Kansas City

1h 05mnonstop

6:20 am - 7:20 amMCI Kansas City-STL Lambert-St Louis

1h 00mnonstop

$277Southwest

Thu, Oct 29 - Sat, Oct 31

9:45 pm - 10:55 pmSTL Lambert-St Louis-MCI Kansas City

1h 10mnonstop

6:05 pm - 7:10 pmMCI Kansas City-STL Lambert-St Louis

1h 05mnonstop

$277Southwest

Mon, Nov 2 - Mon, Nov 9

9:50 pm - 11:00 pmSTL Lambert-St Louis-MCI Kansas City

1h 10mnonstop

6:00 pm - 7:05 pmMCI Kansas City-STL Lambert-St Louis

1h 05mnonstop

$277Southwest

Mon, Oct 5 - Mon, Oct 12

9:50 pm - 11:00 pmSTL Lambert-St Louis-MCI Kansas City

1h 10mnonstop

6:00 pm - 7:05 pmMCI Kansas City-STL Lambert-St Louis

1h 05mnonstop

$277Southwest

Thu, Oct 8 - Mon, Oct 12

8:30 am - 9:35 amSTL Lambert-St Louis-MCI Kansas City

1h 05mnonstop

1:50 pm - 2:55 pmMCI Kansas City-STL Lambert-St Louis

1h 05mnonstop

$277Southwest

Thu, Oct 22 - Thu, Oct 22

8:30 am - 9:35 amSTL Lambert-St Louis-MCI Kansas City

1h 05mnonstop

8:15 am - 9:15 amMCI Kansas City-STL Lambert-St Louis

1h 00mnonstop

$277Southwest

Tue, Oct 6 - Tue, Oct 13

3:05 pm - 4:10 pmSTL Lambert-St Louis-MCI Kansas City

1h 05mnonstop

1:50 pm - 2:55 pmMCI Kansas City-STL Lambert-St Louis

1h 05mnonstop

$277Southwest

Thu, Oct 1 - Mon, Oct 5

Cheap last minute flights

Enter your travel dates to find the best prices.

12:17 pm - 9:45 pmSTL Lambert-St Louis-MCI Kansas City

9h 28m1 stop Las Vegas Harry Reid Intl

10:30 pm - 11:27 amMCI Kansas City-STL Lambert-St Louis

12h 57m1 stop Las Vegas Harry Reid Intl

$310Frontier

Mon, Sep 14 - Thu, Sep 17

8:10 pm - 7:37 pmSTL Lambert-St Louis-MCI Kansas City

23h 27m1 stop Denver Intl

11:20 am - 7:17 pmMCI Kansas City-STL Lambert-St Louis

7h 57m1 stop Denver Intl

$335Frontier

Sat, Sep 12 - Mon, Sep 14

12:17 pm - 9:45 pmSTL Lambert-St Louis-MCI Kansas City

9h 28m1 stop Las Vegas Harry Reid Intl

10:30 pm - 11:32 amMCI Kansas City-STL Lambert-St Louis

13h 02m1 stop Las Vegas Harry Reid Intl

$420Frontier

Thu, Sep 17 - Mon, Sep 21

1:02 pm - 9:45 pmSTL Lambert-St Louis-MCI Kansas City

32h 43m2 stops Denver Intl Las Vegas Harry Reid Intl

8:43 pm - 3:24 pmMCI Kansas City-STL Lambert-St Louis

18h 41m1 stop Denver Intl

$509Frontier

Sun, Sep 13 - Tue, Oct 13

11:01 am - 3:22 pmSTL Lambert-St Louis-MCI Kansas City

4h 21m1 stop Chicago O'Hare Intl

5:13 am - 10:18 amMCI Kansas City-STL Lambert-St Louis

5h 05m1 stop Chicago O'Hare Intl

$540American Airlines

Sat, Sep 12 - Sun, Sep 13

5:00 am - 11:48 amSTL Lambert-St Louis-MCI Kansas City

6h 48m1 stop Chicago O'Hare Intl

7:35 pm - 12:27 amMCI Kansas City-STL Lambert-St Louis

4h 52m1 stop Chicago O'Hare Intl

$540American Airlines

Sat, Sep 12 - Sun, Sep 13

10:20 am - 10:25 amSTL Lambert-St Louis-MCI Kansas City

24h 05m2 stops Dallas/Fort Worth Denver Intl

8:32 pm - 7:17 pmMCI Kansas City-STL Lambert-St Louis

22h 45m1 stop Denver Intl

$542Frontier

Sun, Sep 13 - Thu, Sep 17

1:02 pm - 7:37 pmSTL Lambert-St Louis-MCI Kansas City

6h 35m1 stop Denver Intl

3:17 pm - 11:59 pmMCI Kansas City-STL Lambert-St Louis

8h 42m1 stop Seattle/Tacoma Intl

$552Multiple Airlines

Sun, Sep 13 - Tue, Oct 13

6:45 am - 11:15 amSTL Lambert-St Louis-MCI Kansas City

4h 30m1 stop Denver Intl

12:55 pm - 2:00 pmMCI Kansas City-STL Lambert-St Louis

1h 05mnonstop

$616Southwest

Sun, Sep 13 - Tue, Oct 13

2:40 pm - 3:45 pmSTL Lambert-St Louis-MCI Kansas City

1h 05mnonstop

4:35 pm - 5:40 pmMCI Kansas City-STL Lambert-St Louis

1h 05mnonstop

$616Southwest

Sun, Sep 13 - Tue, Oct 13

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Frontier flights from St. Louis to Missouri

Our best Frontier deals on St. Louis to Missouri flight tickets

Frontier

Sep 23

STL8:10 pmLambert-St Louis

23h 27m

1 stop

MCI7:37 pmKansas City

Sep 27

MCI10:30 pmKansas City

12h 47m

1 stop

STL11:17 amLambert-St Louis

$250

Frontier

Sep 21

STL12:17 pmLambert-St Louis

9h 28m

1 stop

MCI9:45 pmKansas City

Sep 25

MCI8:32 pmKansas City

22h 45m

1 stop

STL7:17 pmLambert-St Louis

$270

Frontier

Oct 2

STL8:10 pmLambert-St Louis

23h 27m

1 stop

MCI7:37 pmKansas City

Oct 9

MCI8:43 pmKansas City

22h 14m

1 stop

STL6:57 pmLambert-St Louis

$307

United Airlines flights from St. Louis to Missouri

Our best United Airlines deals on St. Louis to Missouri flight tickets

United Airlines

Oct 29

STL8:50 amLambert-St Louis

7h 21m

1 stop

MCI4:11 pmKansas City

Oct 30

MCI11:27 amKansas City

4h 16m

1 stop

STL3:43 pmLambert-St Louis

$385

United Airlines

Oct 29

STL9:59 amLambert-St Louis

11h 52m

2 stops

MCI9:51 pmKansas City

Oct 30

MCI11:27 amKansas City

4h 16m

1 stop

STL3:43 pmLambert-St Louis

$390

United Airlines

Nov 25

STL3:15 pmLambert-St Louis

4h 28m

1 stop

MCI7:43 pmKansas City

Nov 28

MCI6:00 amKansas City

6h 06m

1 stop

STL12:06 pmLambert-St Louis

$431

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

Wed 9/23

8:10 pm-7:37 pm

1 stop23h 27m

Kansas City

Sun 9/27

10:30 pm-11:17 am

1 stop12h 47m

$250

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

Fri 9/25

8:32 pm-7:17 pm

1 stop22h 45m

$270

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Tue 12/1

12:40 pm-1:45 pm

Nonstop1h 05m

Kansas City

Thu 12/3

8:15 am-9:30 am

Nonstop1h 15m

$277

Quickest round-trip

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Thu 10/29

8:30 am-9:35 am

Nonstop1h 05m

Kansas City

Sat 10/31

6:20 am-7:20 am

Nonstop1h 00m

$277

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Mon 11/2

9:45 pm-10:55 pm

Nonstop1h 10m

Kansas City

Mon 11/9

6:05 pm-7:10 pm

Nonstop1h 05m

$277

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Mon 10/5

9:50 pm-11:00 pm

Nonstop1h 10m

Kansas City

Mon 10/12

6:00 pm-7:05 pm

Nonstop1h 05m

$277

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Thu 10/8

9:50 pm-11:00 pm

Nonstop1h 10m

Kansas City

Mon 10/12

6:00 pm-7:05 pm

Nonstop1h 05m

$277

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Thu 10/22

8:30 am-9:35 am

Nonstop1h 05m

Kansas City

Thu 10/22

1:50 pm-2:55 pm

Nonstop1h 05m

$277

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Tue 10/6

8:30 am-9:35 am

Nonstop1h 05m

Kansas City

Tue 10/13

8:15 am-9:15 am

Nonstop1h 00m

$277

St. LouisKansas City

STL Lambert-St Louis - MCI Kansas City

STLMCI

Lambert-St Louis

Thu 10/1

3:05 pm-4:10 pm

Nonstop1h 05m

Kansas City

Mon 10/5

1:50 pm-2:55 pm

Nonstop1h 05m

$277

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Other information

What is the cheapest month to fly to Missouri?

In general, December is the cheapest month to fly from St. Louis to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel to Missouri during the month of December, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $179.

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

Fly from Lambert-St Louis to Kansas City for the best Lambert-St Louis - Missouri flight prices

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

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

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

Cheap St. Louis to Missouri flight deals and tips

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

Best Price Found	$111
Fastest flight time	1h 05m
Direct flights	Every day
Airports in Missouri	55 airports

The best one-way flight to Missouri from St. Louis in the past 72 hours is $111. The best round-trip flight deal from St. Louis to Missouri found on momondo in the last 72 hours is $250.

The fastest flight from St. Louis to Missouri takes 1h 05m

Direct flights go from St. Louis to Missouri every day.

There are 55 airports in Missouri. From St. Louis there are direct flights to Kansas City (MCI).

Search flight deals

Frequently asked questions about flying from St. Louis to Missouri

When did momondo last update prices for flights from Lambert-St Louis Airport to Missouri?
Prices for flights from Lambert-St Louis Airport to Missouri refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Missouri?
There is 1 operator available for flights from Lambert-St Louis Airport to Missouri as of September 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Missouri?
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 Missouri.
What documentation or ID do you need to fly to Missouri?
The travel and health documents you'll need for your trip to Missouri 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 Missouri. 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 Missouri?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Missouri is Boeing 737 MAX 8, representing 31.03% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 13.79%, Airbus A319 at 10.34%, and Embraer 175 at 5.17%.

Best airlines flying from St. Louis to Missouri

Compare and see reviews for airlines that fly from St. Louis to Missouri with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $254	Free Cancellation	Rating 8.0 4,195 reviews		Search Southwest flights

Why use momondo?

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

It is quick and easy to find St. Louis to Missouri flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Missouri that suits you.

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

Flights from St. Louis to Missouri with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between St. Louis and Missouri by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Missouri, momondo offers a useful price alert feature which will track prices for flights to Missouri from St. Louis and alert you when they change.