What is the cheapest airline that flies from United States to Missouri?

Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from United States to Missouri

How long is the flight from United States to Missouri?

The flight from United States to Missouri depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from New York (a popular airport in United States) to St. Louis (the most popular airport in Missouri), then the flight time is 2h 45m on average. If you fly from Boston (another popular airport in United States) to St. Louis, then the average flight time is 2h 50m.

How many flights depart from United States to Missouri on average per week?

The number of flights available between United States and Missouri is 1,431 per week as of January 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.

How many flights depart from United States to Missouri on average per day?

As of January 2026, 204 flights take off from United States and land in Missouri each day. The most common flight departure time for this route is 6:00PM, with 56% of daily flights taking off in the evening.

What airlines fly to Missouri?

Southwest, American Airlines and Delta are the top three most popular airlines that fly to Missouri from United States according to our data. Southwest is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 13 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from United States to Missouri?

Prices for flights from United States to Missouri are refreshed on a daily basis.

How many operators does momondo search for flights from United States to Missouri?

The number of operators available for flights from United States to Missouri is 8 as of January 2026.

How old do you have to be to fly from United States to Missouri?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Missouri.

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

The travel and health documents required for your trip to Missouri can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Missouri. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$28 Cheap Flights from the United States to Missouri in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from the United States to Missouri

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from the United States to Missouri

Enter your travel dates to find the best prices.

10:30 pm - 6:51 am

EWR

STL

9h 21m

1 stop

8:22 pm - 11:30 pm

STL

EWR

26h 08m

1 stop

$127Multiple Airlines

Sun, Feb 8 - Mon, Feb 9

6:00 pm - 8:04 am

EWR

STL

15h 04m

1 stop

8:17 pm - 8:05 am

STL

EWR

10h 48m

1 stop

$131Multiple Airlines

Sat, Feb 7 - Wed, Feb 11

6:15 am - 7:46 pm

SFO

MCI

11h 31m

1 stop

10:55 am - 9:39 pm

MCI

SFO

12h 44m

1 stop

$138Frontier

Sat, Feb 28 - Mon, Mar 2

6:15 am - 7:48 pm

SFO

MCI

11h 33m

1 stop

9:24 pm - 12:28 am

MCI

SFO

29h 04m

1 stop

$148Frontier

Mon, Feb 23 - Thu, Feb 26

10:14 am - 12:01 pm

ORD

MCI

1h 47mnonstop

7:57 pm - 9:40 pm

MCI

ORD

1h 43mnonstop

$221American Airlines

Fri, Mar 13 - Tue, Mar 17

10:11 pm - 11:54 pm

ORD

MCI

1h 43mnonstop

6:00 am - 7:46 am

MCI

ORD

1h 46mnonstop

$224American Airlines

Thu, Apr 2 - Wed, Apr 8

12:38 pm - 4:42 pm

IAD

STL

5h 04m

1 stop

10:14 am - 4:28 pm

STL

IAD

5h 14m

1 stop

$253Delta

Sat, Feb 14 - Sat, Feb 21

6:50 am - 8:45 am

LGA

STL

2h 55mnonstop

7:40 pm - 10:55 pm

STL

LGA

2h 15mnonstop

$264Southwest

Sat, Mar 28 - Sat, Mar 28

6:30 am - 5:10 pm

LGA

STL

11h 40m

2 stops

7:40 pm - 10:55 pm

STL

LGA

2h 15mnonstop

$268Southwest

Wed, Mar 4 - Sat, Mar 7

5:20 pm - 8:55 am

JFK

MCI

16h 35m

1 stop

7:59 pm - 8:57 pm

MCI

JFK

23h 58m

1 stop

$325Delta

Tue, Mar 10 - Sun, Mar 15

Frontier flights from United States to Missouri

Our best Frontier deals on United States to Missouri flight tickets

Frontier

Feb 28

SFO6:15 amSan Francisco

11h 31m

1 stop

MCI7:46 pmKansas City

Mar 2

MCI10:55 amKansas City

12h 44m

1 stop

SFO9:39 pmSan Francisco

$138

Frontier

Feb 23

SFO6:15 amSan Francisco

11h 33m

1 stop

MCI7:48 pmKansas City

Feb 26

MCI9:24 pmKansas City

29h 04m

1 stop

SFO12:28 amSan Francisco

$148

Frontier

Feb 3

EWR10:30 pmNewark

9h 21m

1 stop

STL6:51 amLambert-St Louis

Feb 6

STL8:22 pmLambert-St Louis

24h 13m

1 stop

EWR9:35 pmNewark

$151

United Airlines flights from United States to Missouri

Our best United Airlines deals on United States to Missouri flight tickets

United Airlines

Feb 21

ORD12:41 pmChicago O'Hare Intl

1h 43m

MCI2:24 pmKansas City

Feb 28

MCI8:00 amKansas City

1h 40m

ORD9:40 amChicago O'Hare Intl

$231

United Airlines

Feb 17

ORD1:55 pmChicago O'Hare Intl

1h 50m

MCI3:45 pmKansas City

Feb 19

MCI8:00 amKansas City

1h 40m

ORD9:40 amChicago O'Hare Intl

$234

United Airlines

Apr 1

ORD6:00 pmChicago O'Hare Intl

1h 45m

MCI7:45 pmKansas City

Apr 5

MCI6:15 amKansas City

1h 43m

ORD7:58 amChicago O'Hare Intl

$260

Fly from

Fly to

Route

Depart

Return

Price

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Sun 2/8

10:30 pm-6:51 am

1 stop9h 21m

Lambert-St Louis

Mon 2/9

8:22 pm-11:30 pm

1 stop26h 08m

$127

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Sat 2/7

6:00 pm-8:04 am

1 stop15h 04m

Lambert-St Louis

Wed 2/11

8:17 pm-8:05 am

1 stop10h 48m

$131

San FranciscoKansas City

SFO - MCI

SFOMCI

San Francisco

Sat 2/28

6:15 am-7:46 pm

1 stop11h 31m

Kansas City

Mon 3/2

10:55 am-9:39 pm

1 stop12h 44m

$138

San FranciscoKansas City

SFO - MCI

SFOMCI

San Francisco

Mon 2/23

6:15 am-7:48 pm

1 stop11h 33m

Kansas City

Thu 2/26

9:24 pm-12:28 am

1 stop29h 04m

$148

ChicagoKansas City

ORD - MCI

ORDMCI

Chicago O'Hare Intl

Fri 3/13

10:14 am-12:01 pm

Nonstop1h 47m

Kansas City

Tue 3/17

7:57 pm-9:40 pm

Nonstop1h 43m

$221

ChicagoKansas City

ORD - MCI

ORDMCI

Chicago O'Hare Intl

Thu 4/2

10:11 pm-11:54 pm

Nonstop1h 43m

Kansas City

Wed 4/8

6:00 am-7:46 am

Nonstop1h 46m

$224

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Sat 2/14

12:38 pm-4:42 pm

1 stop5h 04m

Lambert-St Louis

Sat 2/21

10:14 am-4:28 pm

1 stop5h 14m

$253

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Sat 3/28

6:50 am-8:45 am

Nonstop2h 55m

Lambert-St Louis

Sat 3/28

7:40 pm-10:55 pm

Nonstop2h 15m

$264

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 3/4

6:30 am-5:10 pm

2 stops11h 40m

Lambert-St Louis

Sat 3/7

7:40 pm-10:55 pm

Nonstop2h 15m

$268

New YorkKansas City

JFK - MCI

JFKMCI

New York John F Kennedy Intl

Tue 3/10

5:20 pm-8:55 am

1 stop16h 35m

Kansas City

Sun 3/15

7:59 pm-8:57 pm

1 stop23h 58m

$325

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 United States 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, March is the cheapest month to fly from United States to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $302. If you aren’t able to travel to Missouri during the month of March, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $308.

What is the cheapest day to depart on your flight to Missouri?

The cheapest day to depart from United States to Missouri is on a Friday when prices can be found for as low as $388. Flights from United States to Missouri on a Sunday will generally be more expensive and average around $428. 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 Missouri?

According to our data, the cheapest time of day to fly to Missouri is in the evening. momondo users have found flights departing from United States to Missouri in the evening for as low as $351. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Missouri are more costly at noon, with an average ticket price of $407. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest United States to Missouri flight route?

Fly from Orlando to Lambert-St Louis for the best United States - Missouri flight prices

What cabin class options are available on United States to Missouri flights?

There are 4 cabin classes available to choose from on United States 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 United States to Missouri flights?

No. A direct flight is the cheapest option for a flight between United States to Missouri.

Cheap United States to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Missouri

Best Price Found	$54
Fastest flight time	1h 05m
Direct flights	Every day
Airports in Missouri	55 airports

The best one-way flight to Missouri from United States in the past 72 hours is $54. The best round-trip flight deal from United States to Missouri found on momondo in the last 72 hours is $61.

The fastest flight from United States to Missouri takes 1h 05m

Direct flights go from United States to Missouri every day.

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

Search flight deals

When did momondo last update prices for flights from United States to Missouri?
Prices for flights from United States to Missouri are refreshed on a daily basis.
How many operators does momondo search for flights from United States to Missouri?
The number of operators available for flights from United States to Missouri is 8 as of January 2026.
How old do you have to be to fly from United States to Missouri?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Missouri.
What documentation or ID do you need to fly to Missouri?
The travel and health documents required for your trip to Missouri can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Missouri. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from United States to Missouri?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from United States to Missouri is Boeing 737 MAX 8 (20.35% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (13.60%), Embraer 175 (6.91%), and Embraer 175 (Enhanced Winglets) (6.78%).

Best airlines flying from United States to Missouri

Compare and see reviews for airlines that fly from United States to Missouri with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $52	Free Cancellation	Rating 5.7 3,057 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $54	Free Cancellation	Rating 6.3 8,381 reviews	Search Spirit Airlines flights
United Airlines	PriceFrom $121	Free Cancellation	Rating 7.4 9,199 reviews	Search United Airlines flights
Delta	PriceFrom $126	Free Cancellation	Rating 7.9 8,113 reviews	Search Delta flights
Allegiant Air	PriceFrom $130	Free Cancellation	Rating 7.2 706 reviews	Search Allegiant Air flights
American Airlines	PriceFrom $133	Free Cancellation	Rating 7.2 11,188 reviews	Search American Airlines flights
Southwest	PriceFrom $157	Free Cancellation	Rating 8.0 4,268 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $257	Free Cancellation	Rating 8.0 11,792 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $385	Free Cancellation	Rating 7.2 2,892 reviews	Search JetBlue flights

Why use momondo?

Why should I use momondo to find a flight deal from United States to Missouri?

It is quick and easy to find United States 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 United States to Missouri with flexible booking policies on momondo?

Flights from United States 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 United States to Missouri?

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 Missouri from United States.

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

Of course. momondo tracks the price of United States to Missouri flights. All you need is a valid email address and we will do the rest; it is that quick and easy.