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Cheap flights from the United States to Missouri from $40

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Missouri departing on 4/25. 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 the United States to Missouri

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

Enter your travel dates to find the best prices.
Frontier Logo
6:40 am - 9:48 am
DEN
-
STL
2h 08mnonstop
Frontier Logo
8:17 pm - 9:50 pm
STL
-
DEN
2h 33mnonstop
$108Frontier
Fri, Apr 10 - Sat, Apr 18
Frontier Logo
4:20 pm - 7:32 pm
DEN
-
STL
2h 12mnonstop
Frontier Logo
9:55 pm - 12:09 am
STL
-
DEN
27h 14m
1 stop
$110Frontier
Sat, May 2 - Mon, May 4
American Airlines Logo
5:00 am - 10:15 am
ORD
-
MCI
5h 15m
1 stop
American Airlines Logo
7:50 pm - 9:40 pm
MCI
-
ORD
1h 50mnonstop
$243American Airlines
Thu, Apr 23 - Tue, Apr 28
Southwest Logo
3:45 pm - 11:25 pm
ORD
-
MCI
7h 40m
1 stop
Southwest Logo
5:30 am - 11:10 am
MCI
-
ORD
5h 40m
1 stop
$253Southwest
Mon, Apr 27 - Wed, Apr 29
Delta Logo
5:27 pm - 9:19 pm
IAD
-
STL
4h 52m
1 stop
Delta Logo
1:02 pm - 8:52 pm
STL
-
IAD
6h 50m
1 stop
$273Delta
Tue, Apr 14 - Tue, Apr 21
Southwest Logo
4:30 pm - 11:10 pm
IAD
-
STL
7h 40m
1 stop
Southwest Logo
6:20 am - 3:50 pm
STL
-
IAD
8h 30m
1 stop
$278Southwest
Wed, May 6 - Thu, May 7
United Airlines Logo
5:45 pm - 7:22 pm
IAD
-
STL
2h 37mnonstop
United Airlines Logo
9:10 am - 5:09 pm
STL
-
IAD
6h 59m
1 stop
$281United Airlines
Wed, Apr 15 - Mon, Apr 20
United Airlines Logo
10:10 am - 2:24 pm
IAD
-
STL
5h 14m
1 stop
United Airlines Logo
8:30 am - 11:43 am
STL
-
IAD
2h 13mnonstop
$284United Airlines
Fri, Apr 17 - Sat, Apr 18
American Airlines Logo
9:09 am - 11:09 am
LGA
-
STL
3h 00mnonstop
American Airlines Logo
3:42 pm - 7:19 pm
STL
-
LGA
2h 37mnonstop
$294American Airlines
Mon, Apr 13 - Tue, Apr 14
Delta Logo
11:00 am - 3:32 pm
LGA
-
STL
5h 32m
1 stop
Delta Logo
6:00 am - 1:42 pm
STL
-
LGA
6h 42m
1 stop
$296Delta
Wed, May 6 - Wed, Jul 8

Frontier flights from United States to Missouri

Our best Frontier deals on United States to Missouri flight tickets
Frontier
Apr 10
DEN6:40 amDenver Intl
2h 08m
STL9:48 amLambert-St Louis
Apr 18
STL8:17 pmLambert-St Louis
2h 33m
DEN9:50 pmDenver Intl
$108
Frontier
May 2
DEN4:20 pmDenver Intl
2h 12m
STL7:32 pmLambert-St Louis
May 4
STL9:55 pmLambert-St Louis
27h 14m
1 stop
DEN12:09 amDenver Intl
$110
Frontier
Apr 10
DEN6:40 amDenver Intl
2h 08m
STL9:48 amLambert-St Louis
Apr 16
STL8:06 pmLambert-St Louis
2h 33m
DEN9:39 pmDenver Intl
$111

Southwest flights from United States to Missouri

Our best Southwest deals on United States to Missouri flight tickets
Southwest
Apr 21
DEN7:55 pmDenver Intl
1h 40m
MCI10:35 pmKansas City
Apr 28
MCI7:45 amKansas City
5h 10m
1 stop
DEN11:55 amDenver Intl
$171
Southwest
Apr 21
DEN6:45 amDenver Intl
5h 35m
1 stop
MCI1:20 pmKansas City
Apr 28
MCI7:10 amKansas City
1h 50m
DEN8:00 amDenver Intl
$173
Southwest
Apr 27
ORD3:45 pmChicago O'Hare Intl
7h 40m
1 stop
MCI11:25 pmKansas City
Apr 29
MCI5:30 amKansas City
5h 40m
1 stop
ORD11:10 amChicago O'Hare Intl
$253

momondo Fare Finder

 
Customize your flight search to find flights from United States to Missouri 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 March 26, 2026.
Use the filters below to find and compare flights from the United States to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Fri 4/10

6:40 am-9:48 am

Nonstop2h 08m

Lambert-St Louis

Sat 4/18

8:17 pm-9:50 pm

Nonstop2h 33m

$108

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Sat 5/2

4:20 pm-7:32 pm

Nonstop2h 12m

Lambert-St Louis

Mon 5/4

9:55 pm-12:09 am

1 stop27h 14m

$110

ChicagoKansas City

ORD - MCI

ORDMCI

Chicago O'Hare Intl

Thu 4/23

5:00 am-10:15 am

1 stop5h 15m

Kansas City

Tue 4/28

7:50 pm-9:40 pm

Nonstop1h 50m

$243

ChicagoKansas City

ORD - MCI

ORDMCI

Chicago O'Hare Intl

Mon 4/27

3:45 pm-11:25 pm

1 stop7h 40m

Kansas City

Wed 4/29

5:30 am-11:10 am

1 stop5h 40m

$253

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 4/14

5:27 pm-9:19 pm

1 stop4h 52m

Lambert-St Louis

Tue 4/21

1:02 pm-8:52 pm

1 stop6h 50m

$273

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 5/6

4:30 pm-11:10 pm

1 stop7h 40m

Lambert-St Louis

Thu 5/7

6:20 am-3:50 pm

1 stop8h 30m

$278

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 4/15

5:45 pm-7:22 pm

Nonstop2h 37m

Lambert-St Louis

Mon 4/20

9:10 am-5:09 pm

1 stop6h 59m

$281

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Fri 4/17

10:10 am-2:24 pm

1 stop5h 14m

Lambert-St Louis

Sat 4/18

8:30 am-11:43 am

Nonstop2h 13m

$284

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Mon 4/13

9:09 am-11:09 am

Nonstop3h 00m

Lambert-St Louis

Tue 4/14

3:42 pm-7:19 pm

Nonstop2h 37m

$294

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 5/6

11:00 am-3:32 pm

1 stop5h 32m

Lambert-St Louis

Wed 7/8

6:00 am-1:42 pm

1 stop6h 42m

$296

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 Missouri from

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

What is the cheapest month to fly to Missouri?

In general, August 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 $306. If you aren’t able to travel to Missouri during the month of August, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $312.

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 Wednesday when prices can be found for as low as $389. Flights from United States to Missouri on a Monday will generally be more expensive and average around $461. 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 $350. 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 $440. 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 Atlanta Hartsfield-Jackson to Kansas City 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

$64

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 $64. 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?

  • 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?

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
FrontierPriceFrom $53Free CancellationRating
5.7
3,015 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $54Free CancellationRating
6.3
8,547 reviews
Search Spirit Airlines flights
DeltaPriceFrom $116Free CancellationRating
7.9
8,336 reviews
Search Delta flights
ContourPriceFrom $128Free CancellationRating
7.6
42 reviews
Search Contour flights
Allegiant AirPriceFrom $128Free CancellationRating
7.3
710 reviews
Search Allegiant Air flights
American AirlinesPriceFrom $144Free CancellationRating
7.1
11,497 reviews
Search American Airlines flights
United AirlinesPriceFrom $166Free CancellationRating
7.4
9,489 reviews
Search United Airlines flights
SouthwestPriceFrom $169Free CancellationRating
8.0
4,331 reviews
Search Southwest flights
JetBluePriceFrom $243Free CancellationRating
7.2
2,905 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $257Free CancellationRating
7.9
12,119 reviews
Search Alaska Airlines 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.

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