What is the cheapest airline that flies from Washington, D.C. Reagan-National to Missouri?

Southwest, American Airlines, and Delta are the most popular carriers operating from Washington, D.C. Reagan-National to Missouri

What airlines fly to Missouri?

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to Missouri from Washington, D.C. Reagan-National Airport according to our data. Southwest is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 4 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Missouri?

As of June 2026, there are 4 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Missouri.

How old do you have to be to fly from Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport to Missouri.

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

The required travel and health documents for your Missouri trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Missouri. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$128 Cheap Flights from Washington, D.C. Reagan-National Airport to Missouri in 2026

Q: How many flights depart from Washington, D.C. Reagan-National Airport to Missouri on average per week?

51 flights are operational weekly from Washington, D.C. Reagan-National Airport to Missouri as of June 2026. The most popular departure day for this route is Thu, with 27% of flights per week taking off on this day.

Q: How many flights depart from Washington, D.C. Reagan-National Airport to Missouri on average per day?

As of June 2026, 7 flights take off from Washington, D.C. Reagan-National Airport and land in Missouri each day. The most common flight departure time for this route is 8:00AM, with 44% of daily flights taking off at noon.

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Missouri

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 pm - 7:23 pm

DCA

STL

26h 23m

1 stop

8:08 pm - 9:59 pm

STL

DCA

24h 51m

1 stop

$261Frontier

Fri, Aug 14 - Mon, Aug 17

11:45 am - 2:50 pm

DCA

STL

4h 05m

1 stop

3:55 pm - 6:55 pm

STL

DCA

2h 00mnonstop

$263Southwest

Tue, Jul 21 - Wed, Jul 22

11:30 am - 12:55 pm

DCA

STL

2h 25mnonstop

10:54 am - 1:59 pm

STL

DCA

2h 05mnonstop

$265American Airlines

Wed, Oct 28 - Sat, Oct 31

6:35 pm - 7:55 pm

DCA

STL

2h 20mnonstop

7:55 pm - 10:55 pm

STL

DCA

2h 00mnonstop

$266Southwest

Sat, Jul 18 - Tue, Jul 21

12:52 pm - 7:00 pm

DCA

STL

7h 08m

1 stop

6:43 am - 9:46 am

STL

DCA

2h 03mnonstop

$267American Airlines

Wed, Jul 1 - Tue, Jul 7

7:00 am - 7:23 pm

DCA

STL

13h 23m

1 stop

8:08 pm - 12:51 pm

STL

DCA

15h 43m

1 stop

$269Frontier

Fri, Aug 7 - Sun, Aug 9

7:40 am - 1:12 pm

DCA

STL

6h 32m

1 stop

6:00 am - 9:14 am

STL

DCA

2h 14mnonstop

$270American Airlines

Tue, Jun 30 - Mon, Aug 17

11:57 am - 5:36 pm

DCA

MCI

6h 39m

1 stop

1:08 pm - 6:52 pm

MCI

DCA

4h 44m

1 stop

$321United Airlines

Wed, Jul 22 - Sat, Nov 14

6:00 am - 10:53 am

DCA

SGF

5h 53m

1 stop

6:06 am - 11:27 am

SGF

DCA

4h 21m

1 stop

$344Delta

Wed, Aug 19 - Mon, Aug 24

7:10 pm - 11:27 pm

DCA

SGF

5h 17m

1 stop

7:45 am - 2:22 pm

SGF

DCA

5h 37m

1 stop

$392United Airlines

Sat, Jul 11 - Fri, Jul 24

United Airlines flights from Washington, D.C. Reagan-National Airport to Missouri

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Missouri flight tickets

United Airlines

Jul 22

DCA11:57 amWashington, D.C. Reagan-National

6h 39m

1 stop

MCI5:36 pmKansas City

Nov 14

MCI1:08 pmKansas City

4h 44m

1 stop

DCA6:52 pmWashington, D.C. Reagan-National

$321

United Airlines

Jun 24

DCA11:57 amWashington, D.C. Reagan-National

5h 03m

1 stop

MCI4:00 pmKansas City

Jun 27

MCI6:05 amKansas City

7h 18m

1 stop

DCA2:23 pmWashington, D.C. Reagan-National

$366

United Airlines

Jun 26

DCA7:10 pmWashington, D.C. Reagan-National

5h 07m

1 stop

MCI11:17 pmKansas City

Jun 30

MCI3:16 pmKansas City

4h 54m

1 stop

DCA9:10 pmWashington, D.C. Reagan-National

$380

Southwest flights from Washington, D.C. Reagan-National Airport to Missouri

Our best Southwest deals on Washington, D.C. Reagan-National Airport to Missouri flight tickets

Southwest

Jul 21

DCA11:45 amWashington, D.C. Reagan-National

4h 05m

1 stop

STL2:50 pmLambert-St Louis

Jul 22

STL3:55 pmLambert-St Louis

2h 00m

DCA6:55 pmWashington, D.C. Reagan-National

$263

Southwest

Jul 18

DCA6:35 pmWashington, D.C. Reagan-National

2h 20m

STL7:55 pmLambert-St Louis

Jul 21

STL7:55 pmLambert-St Louis

2h 00m

DCA10:55 pmWashington, D.C. Reagan-National

$266

Southwest

Jul 1

DCA11:45 amWashington, D.C. Reagan-National

4h 05m

1 stop

STL2:50 pmLambert-St Louis

Jul 8

STL4:00 pmLambert-St Louis

6h 50m

1 stop

DCA11:50 pmWashington, D.C. Reagan-National

$272

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Fri 8/14

6:00 pm-7:23 pm

1 stop26h 23m

Lambert-St Louis

Mon 8/17

8:08 pm-9:59 pm

1 stop24h 51m

$261

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 7/21

11:45 am-2:50 pm

1 stop4h 05m

Lambert-St Louis

Wed 7/22

3:55 pm-6:55 pm

Nonstop2h 00m

$263

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Wed 10/28

11:30 am-12:55 pm

Nonstop2h 25m

Lambert-St Louis

Sat 10/31

10:54 am-1:59 pm

Nonstop2h 05m

$265

Quickest round-trip

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 7/18

6:35 pm-7:55 pm

Nonstop2h 20m

Lambert-St Louis

Tue 7/21

7:55 pm-10:55 pm

Nonstop2h 00m

$266

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Wed 7/1

12:52 pm-7:00 pm

1 stop7h 08m

Lambert-St Louis

Tue 7/7

6:43 am-9:46 am

Nonstop2h 03m

$267

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Fri 8/7

7:00 am-7:23 pm

1 stop13h 23m

Lambert-St Louis

Sun 8/9

8:08 pm-12:51 pm

1 stop15h 43m

$269

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 6/30

7:40 am-1:12 pm

1 stop6h 32m

Lambert-St Louis

Mon 8/17

6:00 am-9:14 am

Nonstop2h 14m

$270

Washington, D.C.Kansas City

DCA - MCI

DCAMCI

Washington, D.C. Reagan-National

Wed 7/22

11:57 am-5:36 pm

1 stop6h 39m

Kansas City

Sat 11/14

1:08 pm-6:52 pm

1 stop4h 44m

$321

Washington, D.C.Springfield

DCA - SGF

DCASGF

Washington, D.C. Reagan-National

Wed 8/19

6:00 am-10:53 am

1 stop5h 53m

Springfield-Branson

Mon 8/24

6:06 am-11:27 am

1 stop4h 21m

$344

Washington, D.C.Springfield

DCA - SGF

DCASGF

Washington, D.C. Reagan-National

Sat 7/11

7:10 pm-11:27 pm

1 stop5h 17m

Springfield-Branson

Fri 7/24

7:45 am-2:22 pm

1 stop5h 37m

$392

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 Washington, D.C. Reagan-National Airport 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, September is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $117. If you aren’t able to travel to Missouri during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $131.

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

The cheapest day to depart from Washington, D.C. Reagan-National Airport to Missouri is on a Saturday when prices can be found for as low as $337. Flights from Washington, D.C. Reagan-National Airport to Missouri on a Sunday will generally be more expensive and average around $410. 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 Washington, D.C. Reagan-National Airport to Missouri in the evening for as low as $333. 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 in the afternoon, with an average ticket price of $385. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington, D.C. Reagan-National to Missouri flight route?

Fly from Washington, D.C. Reagan-National to Lambert-St Louis for the best Washington, D.C. Reagan-National - Missouri flight prices

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Missouri?

You are more likely to see cheaper flights to Missouri from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Missouri for around $358 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missouri from Washington, D.C. Reagan-National Airport for as low as $277 on momondo.

What cabin class options are available on Washington, D.C. Reagan-National Airport to Missouri flights?

There are 3 cabin classes available to choose from on Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport to Missouri flights?

You could potentially save up to 4% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Missouri flight.

Cheap Washington, D.C. Reagan-National Airport to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Missouri

Best Price Found	$159
Fastest flight time	2h 10m
Direct flights	Every day
Airports in Missouri	55 airports

The best one-way flight to Missouri from Washington, D.C. Reagan-National Airport in the past 72 hours is $159. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to Missouri found on momondo in the last 72 hours is $315.

The fastest flight from Washington, D.C. Reagan-National Airport to Missouri takes 2h 10m

Direct flights go from Washington, D.C. Reagan-National Airport to Missouri every day.

There are 55 airports in Missouri. From Washington, D.C. Reagan-National Airport there are direct flights to Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Missouri

When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Missouri?
Prices for flights from Washington, D.C. Reagan-National Airport to Missouri refresh daily.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Missouri?
As of June 2026, there are 4 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Missouri.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport to Missouri.
What documentation or ID do you need to fly to Missouri?
The required travel and health documents for your Missouri trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Missouri. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Washington, D.C. Reagan-National Airport to Missouri?
Based on momondo bookings for flights between Washington, D.C. Reagan-National Airport and Missouri, the leading plane model is Canadair (Bombardier) Regional Jet 900, making up 18.92% of the total bookings. Other popular models include Boeing 737 MAX 8 with 18.20%, Canadair (Bombardier) Regional Jet 700 with 17.08%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 9.18%.

Best airlines flying from Washington, D.C. Reagan-National Airport to Missouri

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Missouri with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $179	Free Cancellation	Rating 7.1 11,641 reviews	Search American Airlines flights
Southwest	PriceFrom $204	Free Cancellation	Rating 8.0 4,256 reviews	Search Southwest flights
Delta	PriceFrom $248	Free Cancellation	Rating 7.8 8,395 reviews	Search Delta flights
United Airlines	PriceFrom $248	Free Cancellation	Rating 7.4 9,773 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Missouri?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Missouri for you.

Can I find flights from Washington, D.C. to Missouri with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Missouri from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Missouri?

Once you have performed a search for Washington, D.C. to Missouri 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 Washington, D.C. 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 Washington, D.C. and alert you when they change.

An easier way to manage your Missouri trip

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Popular cities in Missouri

Flights to New Yorkfrom $60

Flights to Los Angelesfrom $49

Flights to Orlandofrom $68

Flights to Miamifrom $69

Flights to Chicagofrom $64

Flights to San Franciscofrom $59

Flights to Las Vegasfrom $50

Flights to Washington, D.C.from $42

Flights to Bostonfrom $79

Flights to Atlantafrom $50

Flights to Fort Lauderdalefrom $59

Flights to Dallasfrom $63

Cheap flights from Washington, D.C. Reagan-National Airport to Missouri from $128

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Missouri

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United Airlines flights from Washington, D.C. Reagan-National Airport to Missouri

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Missouri flight tickets

Southwest flights from Washington, D.C. Reagan-National Airport to Missouri

Our best Southwest deals on Washington, D.C. Reagan-National Airport to Missouri flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Missouri that are best for you.

See travel insights to Missouri from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to Missouri

What is the cheapest month to fly to Missouri?

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

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

What is the cheapest Washington, D.C. Reagan-National to Missouri flight route?

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Missouri?

What cabin class options are available on Washington, D.C. Reagan-National Airport to Missouri flights?

Can stopping save me money on Washington, D.C. Reagan-National Airport to Missouri flights?

What is the cheapest airline that flies from Washington, D.C. Reagan-National to Missouri?

What airlines fly to Missouri?

How many flights depart from Washington, D.C. Reagan-National Airport to Missouri on average per day?

How many flights depart from Washington, D.C. Reagan-National Airport to Missouri on average per week?

Cheap Washington, D.C. Reagan-National Airport to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Missouri

Best Price Found

Fastest flight time

Direct flights

Airports in Missouri

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Missouri

Best airlines flying from Washington, D.C. Reagan-National Airport to Missouri

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Missouri with momondo

Why use momondo?

An easier way to manage your Missouri trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Missouri

Popular cities in Missouri

Popular flights according to clicks in the last 7 days on momondo

Washington, D.C. Reagan-National Airport flight routes

According to popular flight searches on momondo this year

Missouri flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year