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Cheap flights from Missouri to the United States from $27

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to the United States departing on 4/18. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:49 pm - 7:18 pm
STL
-
MCO
2h 29mnonstop
Frontier Logo
9:33 pm - 11:19 pm
MCO
-
STL
2h 46mnonstop
$67Frontier
Tue, Mar 3 - Tue, Mar 10
Frontier Logo
3:49 pm - 7:18 pm
STL
-
MCO
2h 29mnonstop
Frontier Logo
9:33 pm - 11:19 pm
MCO
-
STL
2h 46mnonstop
$68Frontier
Sat, Feb 28 - Tue, Mar 10
Frontier Logo
8:12 pm - 9:49 pm
STL
-
DEN
2h 37mnonstop
Frontier Logo
6:35 am - 9:49 am
DEN
-
STL
2h 14mnonstop
$71Frontier
Sat, Mar 7 - Wed, Mar 11
Multiple Airlines Logo
2:51 pm - 11:36 pm
MCI
-
LAS
10h 45m
1 stop
Multiple Airlines Logo
6:48 pm - 11:33 pm
LAS
-
MCI
2h 45mnonstop
$123Multiple Airlines
Sat, Apr 18 - Wed, Apr 22
Multiple Airlines Logo
7:00 am - 8:14 am
MCI
-
LAS
3h 14mnonstop
Multiple Airlines Logo
6:30 am - 3:44 pm
LAS
-
MCI
7h 14m
1 stop
$124Multiple Airlines
Tue, Mar 3 - Wed, Mar 4
Spirit Airlines Logo
6:04 pm - 7:12 pm
MCI
-
LAS
3h 08mnonstop
Spirit Airlines Logo
12:25 pm - 5:09 pm
LAS
-
MCI
2h 44mnonstop
$125Spirit Airlines
Mon, Mar 16 - Wed, Mar 18
Spirit Airlines Logo
6:04 pm - 7:12 pm
MCI
-
LAS
3h 08mnonstop
Spirit Airlines Logo
12:25 pm - 5:09 pm
LAS
-
MCI
2h 44mnonstop
$126Spirit Airlines
Sun, Apr 12 - Tue, Apr 14
Delta Logo
2:27 pm - 10:01 pm
STL
-
SEA
9h 34m
1 stop
Delta Logo
11:59 pm - 8:46 am
SEA
-
STL
6h 47m
1 stop
$177Delta
Fri, May 8 - Mon, May 18
Delta Logo
2:20 pm - 6:30 pm
STL
-
SEA
6h 10m
1 stop
Delta Logo
11:14 pm - 9:42 am
SEA
-
STL
8h 28m
1 stop
$187Delta
Thu, Apr 30 - Mon, May 4
Southwest Logo
6:00 am - 9:20 am
STL
-
LGA
2h 20mnonstop
Southwest Logo
6:00 am - 12:40 pm
LGA
-
STL
7h 40m
1 stop
$269Southwest
Wed, Mar 25 - Wed, Apr 1

Frontier flights from Missouri to United States

Our best Frontier deals on Missouri to United States flight tickets
Frontier
Mar 3
STL3:49 pmLambert-St Louis
2h 29m
MCO7:18 pmOrlando
Mar 10
MCO9:33 pmOrlando
2h 46m
STL11:19 pmLambert-St Louis
$67
Frontier
Feb 28
STL3:49 pmLambert-St Louis
2h 29m
MCO7:18 pmOrlando
Mar 10
MCO9:33 pmOrlando
2h 46m
STL11:19 pmLambert-St Louis
$68
Frontier
Mar 7
STL8:12 pmLambert-St Louis
2h 37m
DEN9:49 pmDenver Intl
Mar 11
DEN6:35 amDenver Intl
2h 14m
STL9:49 amLambert-St Louis
$71

Spirit Airlines flights from Missouri to United States

Our best Spirit Airlines deals on Missouri to United States flight tickets
Spirit Airlines
Mar 16
MCI6:04 pmKansas City
3h 08m
LAS7:12 pmLas Vegas Harry Reid Intl
Mar 18
LAS12:25 pmLas Vegas Harry Reid Intl
2h 44m
MCI5:09 pmKansas City
$125
Spirit Airlines
Apr 12
MCI6:04 pmKansas City
3h 08m
LAS7:12 pmLas Vegas Harry Reid Intl
Apr 14
LAS12:25 pmLas Vegas Harry Reid Intl
2h 44m
MCI5:09 pmKansas City
$126
Spirit Airlines
Mar 15
MCI6:04 pmKansas City
3h 08m
LAS7:12 pmLas Vegas Harry Reid Intl
Mar 18
LAS12:25 pmLas Vegas Harry Reid Intl
2h 44m
MCI5:09 pmKansas City
$129

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to United States 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 February 10, 2026.
Use the filters below to find and compare flights from Missouri to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

Tue 3/3

3:49 pm-7:18 pm

Nonstop2h 29m

Orlando

Tue 3/10

9:33 pm-11:19 pm

Nonstop2h 46m

$67

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

Sat 2/28

3:49 pm-7:18 pm

Nonstop2h 29m

Orlando

Tue 3/10

9:33 pm-11:19 pm

Nonstop2h 46m

$68

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sat 3/7

8:12 pm-9:49 pm

Nonstop2h 37m

Denver Intl

Wed 3/11

6:35 am-9:49 am

Nonstop2h 14m

$71

Kansas CityLas Vegas

MCI - LAS

MCILAS

Kansas City

Sat 4/18

2:51 pm-11:36 pm

1 stop10h 45m

Las Vegas Harry Reid Intl

Wed 4/22

6:48 pm-11:33 pm

Nonstop2h 45m

$123

Kansas CityLas Vegas

MCI - LAS

MCILAS

Kansas City

Tue 3/3

7:00 am-8:14 am

Nonstop3h 14m

Las Vegas Harry Reid Intl

Wed 3/4

6:30 am-3:44 pm

1 stop7h 14m

$124

Kansas CityLas Vegas

MCI - LAS

MCILAS

Kansas City

Mon 3/16

6:04 pm-7:12 pm

Nonstop3h 08m

Las Vegas Harry Reid Intl

Wed 3/18

12:25 pm-5:09 pm

Nonstop2h 44m

$125

Kansas CityLas Vegas

MCI - LAS

MCILAS

Kansas City

Sun 4/12

6:04 pm-7:12 pm

Nonstop3h 08m

Las Vegas Harry Reid Intl

Tue 4/14

12:25 pm-5:09 pm

Nonstop2h 44m

$126

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Fri 5/8

2:27 pm-10:01 pm

1 stop9h 34m

Seattle/Tacoma Intl

Mon 5/18

11:59 pm-8:46 am

1 stop6h 47m

$177

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Thu 4/30

2:20 pm-6:30 pm

1 stop6h 10m

Seattle/Tacoma Intl

Mon 5/4

11:14 pm-9:42 am

1 stop8h 28m

$187

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Wed 3/25

6:00 am-9:20 am

Nonstop2h 20m

New York LaGuardia

Wed 4/1

6:00 am-12:40 pm

1 stop7h 40m

$269

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 the United States from

How to get the cheapest flight ticket from Missouri to United States

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 United States?

In general, April is the cheapest month to fly from Missouri to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $267. If you aren’t able to travel during the month of April, then book flights to United States from Missouri during August instead. Flights to United States in August, while not as cheap as those in April, still average around $284.

What is the cheapest day to depart on your flight to United States?

According to our data, Wednesday is the cheapest day to fly to United States from Missouri. The lowest ticket price found for a Wednesday departure recently was $336. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $437. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

What is the cheapest time of day to depart on your flight to United States?

The cheapest time of day to fly to United States is in the evening when flights can be purchased for as low as $310. Try not to purchase tickets in the afternoon because they tend to be around $404. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Missouri to United States flight route?

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

How far in advance should I book a flight to United States?

You are more likely to see cheaper flights to United States from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $323 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Missouri for as low as $236 on momondo.

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

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

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

Cheap Missouri to United States flight deals and tips

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

Best Price Found

$59

Fastest flight time

1h 05m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in United States

4,296 airports
The best one-way flight to United States from Missouri in the past 72 hours is $59. The best round-trip flight deal from Missouri to United States found on momondo in the last 72 hours is $87.
The fastest flight from Missouri to United States takes 1h 05m
Direct flights go from Missouri to United States on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: United Airlines, Southwest and Delta.
There are 4,296 airports in United States. From Missouri there are direct flights to Denver Intl (DEN).
Search flight deals

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

    Prices for flights from Missouri to United States refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to United States.

  • What documentation or ID do you need to fly to United States?

    The necessary travel and health documents for your United States trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Missouri to United States?

Best airlines flying from Missouri to United States

Compare and see reviews for airlines that fly from Missouri to United States with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $48Free CancellationRating
5.7
3,052 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $73Free CancellationRating
6.3
8,437 reviews
Search Spirit Airlines flights
DeltaPriceFrom $108Free CancellationRating
7.9
8,178 reviews
Search Delta flights
United AirlinesPriceFrom $128Free CancellationRating
7.4
9,266 reviews
Search United Airlines flights
Allegiant AirPriceFrom $130Free CancellationRating
7.2
711 reviews
Search Allegiant Air flights
SouthwestPriceFrom $144Free CancellationRating
8.0
4,281 reviews
Search Southwest flights
American AirlinesPriceFrom $157Free CancellationRating
7.2
11,259 reviews
Search American Airlines flights
JetBluePriceFrom $206Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $248Free CancellationRating
8.0
11,871 reviews
Search Alaska Airlines flights

Why use momondo?

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

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

Can I find flights from Missouri to United States with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to United States from Missouri with this policy.

How can momondo help me find flights from Missouri to United States?

Once you have performed a search for Missouri to United States flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

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

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