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Cheap flights from Missouri to the United States from $54

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 7/29. 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 Missouri to the United States

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:46 pm - 2:29 pm
STL
-
LAS
3h 43mnonstop
Frontier Logo
8:17 am - 5:44 pm
LAS
-
STL
7h 27m
1 stop
$155Frontier
Tue, Sep 15 - Mon, Sep 21
Frontier Logo
4:32 pm - 5:40 pm
MCI
-
LAS
3h 08mnonstop
Frontier Logo
10:52 am - 3:47 pm
LAS
-
MCI
2h 55mnonstop
$160Frontier
Fri, Jul 24 - Mon, Jul 27
Multiple Airlines Logo
4:09 pm - 11:36 am
STL
-
EWR
18h 27m
2 stops
Multiple Airlines Logo
5:55 am - 5:37 pm
EWR
-
STL
12h 42m
1 stop
$285Multiple Airlines
Wed, Jul 15 - Tue, Jul 28
Southwest Logo
8:30 am - 4:55 pm
STL
-
LGA
7h 25m
1 stop
Southwest Logo
3:15 pm - 5:05 pm
LGA
-
STL
2h 50mnonstop
$301Southwest
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
8:00 pm - 11:20 pm
STL
-
LGA
2h 20mnonstop
Southwest Logo
6:30 am - 1:15 pm
LGA
-
STL
7h 45m
1 stop
$302Southwest
Thu, Aug 6 - Mon, Aug 10
United Airlines Logo
6:41 pm - 8:33 pm
MCI
-
ORD
1h 52mnonstop
United Airlines Logo
2:12 pm - 4:00 pm
ORD
-
MCI
1h 48mnonstop
$302United Airlines
Sun, Jul 26 - Wed, Jul 29
Delta Logo
9:24 am - 3:50 pm
STL
-
LGA
5h 26m
1 stop
Delta Logo
6:29 pm - 8:35 pm
LGA
-
STL
3h 06mnonstop
$303Delta
Tue, Jul 21 - Tue, Jul 28
United Airlines Logo
6:00 am - 7:48 am
MCI
-
ORD
1h 48mnonstop
United Airlines Logo
2:25 pm - 4:07 pm
ORD
-
MCI
1h 42mnonstop
$305United Airlines
Tue, Aug 11 - Tue, Aug 11
Delta Logo
6:05 am - 9:38 am
STL
-
LGA
2h 33mnonstop
Delta Logo
6:30 am - 8:08 am
LGA
-
STL
2h 38mnonstop
$307Delta
Mon, Aug 10 - Tue, Aug 11
Multiple Airlines Logo
1:45 pm - 9:17 am
MCI
-
SEA
21h 32m
1 stop
Multiple Airlines Logo
6:27 pm - 11:59 pm
SEA
-
MCI
3h 32mnonstop
$373Multiple Airlines
Wed, Jul 22 - Tue, Jul 28

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Frontier flights from Missouri to United States

Our best Frontier deals on Missouri to United States flight tickets
Frontier
Sep 15
STL12:46 pmLambert-St Louis
3h 43m
LAS2:29 pmLas Vegas Harry Reid Intl
Sep 21
LAS8:17 amLas Vegas Harry Reid Intl
7h 27m
1 stop
STL5:44 pmLambert-St Louis
$155
Frontier
Jul 24
MCI4:32 pmKansas City
3h 08m
LAS5:40 pmLas Vegas Harry Reid Intl
Jul 27
LAS10:52 amLas Vegas Harry Reid Intl
2h 55m
MCI3:47 pmKansas City
$160
Frontier
Aug 4
MCI1:45 pmKansas City
11h 44m
1 stop
LAS11:29 pmLas Vegas Harry Reid Intl
Aug 6
LAS10:52 amLas Vegas Harry Reid Intl
2h 55m
MCI3:47 pmKansas City
$162

Southwest flights from Missouri to United States

Our best Southwest deals on Missouri to United States flight tickets
Southwest
Jul 20
MCI4:55 pmKansas City
5h 05m
1 stop
LAS8:00 pmLas Vegas Harry Reid Intl
Jul 22
LAS11:30 amLas Vegas Harry Reid Intl
5h 45m
1 stop
MCI7:15 pmKansas City
$194
Southwest
Jul 27
MCI4:55 pmKansas City
5h 05m
1 stop
LAS8:00 pmLas Vegas Harry Reid Intl
Aug 3
LAS8:55 pmLas Vegas Harry Reid Intl
2h 50m
MCI1:45 amKansas City
$195
Southwest
Aug 10
STL8:50 pmLambert-St Louis
3h 25m
LAS10:15 pmLas Vegas Harry Reid Intl
Aug 13
LAS2:20 pmLas Vegas Harry Reid Intl
5h 35m
1 stop
STL9:55 pmLambert-St Louis
$199

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 June 30, 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

Cheapest round-trip

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 9/15

12:46 pm-2:29 pm

Nonstop3h 43m

Las Vegas Harry Reid Intl

Mon 9/21

8:17 am-5:44 pm

1 stop7h 27m

$155

Kansas CityLas Vegas

MCI - LAS

MCILAS

Kansas City

Fri 7/24

4:32 pm-5:40 pm

Nonstop3h 08m

Las Vegas Harry Reid Intl

Mon 7/27

10:52 am-3:47 pm

Nonstop2h 55m

$160

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Wed 7/15

4:09 pm-11:36 am

2 stops18h 27m

Newark

Tue 7/28

5:55 am-5:37 pm

1 stop12h 42m

$285

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Wed 8/12

8:30 am-4:55 pm

1 stop7h 25m

New York LaGuardia

Wed 8/19

3:15 pm-5:05 pm

Nonstop2h 50m

$301

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Thu 8/6

8:00 pm-11:20 pm

Nonstop2h 20m

New York LaGuardia

Mon 8/10

6:30 am-1:15 pm

1 stop7h 45m

$302

Kansas CityChicago

MCI - ORD

MCIORD

Kansas City

Sun 7/26

6:41 pm-8:33 pm

Nonstop1h 52m

Chicago O'Hare Intl

Wed 7/29

2:12 pm-4:00 pm

Nonstop1h 48m

$302

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Tue 7/21

9:24 am-3:50 pm

1 stop5h 26m

New York LaGuardia

Tue 7/28

6:29 pm-8:35 pm

Nonstop3h 06m

$303
Quickest round-trip

Kansas CityChicago

MCI - ORD

MCIORD

Kansas City

Tue 8/11

6:00 am-7:48 am

Nonstop1h 48m

Chicago O'Hare Intl

Tue 8/11

2:25 pm-4:07 pm

Nonstop1h 42m

$305

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Mon 8/10

6:05 am-9:38 am

Nonstop2h 33m

New York LaGuardia

Tue 8/11

6:30 am-8:08 am

Nonstop2h 38m

$307

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 7/22

1:45 pm-9:17 am

1 stop21h 32m

Seattle/Tacoma Intl

Tue 7/28

6:27 pm-11:59 pm

Nonstop3h 32m

$373

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, October 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 $326. If you aren’t able to travel during the month of October, then book flights to United States from Missouri during September instead. Flights to United States in September, while not as cheap as those in October, still average around $337.

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 $434. 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 $751. 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 $388. Try not to purchase tickets in the afternoon because they tend to be around $531. 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 Atlanta Hartsfield-Jackson for the best Missouri - United States flight prices

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 00m

Direct flights

Every day

Airports in United States

4,297 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 $100.
The fastest flight from Missouri to United States takes 1h 00m
Direct flights go from Missouri to United States every day.
There are 4,297 airports in United States. From Missouri there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

Frequently asked questions about flying from Missouri to the United States

  • 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 $55Free CancellationRating
5.6
2,852 reviews
Search Frontier flights
ContourPriceFrom $87Free CancellationRating
7.7
42 reviews
Search Contour flights
DeltaPriceFrom $117Free CancellationRating
7.8
8,451 reviews
Search Delta flights
JetBluePriceFrom $121Free CancellationRating
7.1
3,013 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $133Free CancellationRating
7.9
12,598 reviews
Search Alaska Airlines flights
Allegiant AirPriceFrom $136Free CancellationRating
7.3
689 reviews
Search Allegiant Air flights
Hawaiian AirlinesPriceFrom $138Free CancellationRating
7.8
2,826 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $152Free CancellationRating
7.9
4,248 reviews
Search Southwest flights
American AirlinesPriceFrom $168Free CancellationRating
7.1
11,765 reviews
Search American Airlines flights
United AirlinesPriceFrom $178Free CancellationRating
7.4
9,899 reviews
Search United 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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