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

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

What airlines fly to Washington, D.C. Reagan-National Airport?

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to Washington, D.C. Reagan-National Airport from Missouri according to our data. Southwest is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Washington, D.C. Reagan-National Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Reagan-National Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Washington, D.C. Reagan-National Airport?

Flight times from Missouri to Washington, D.C. Reagan-National Airport vary, but if you’re flying out of St. Louis and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 2h 06m on average. Another popular route from Missouri to Washington, D.C. Reagan-National Airport is flying from Kansas City to Washington, D.C. Dulles Intl Airport, which will take roughly 2h 22m. Keep in mind that layovers or delays could extend your travel time.

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

There are 5 operators available for flights from Missouri to Washington, D.C. Reagan-National Airport as of May 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Washington, D.C. Reagan-National Airport.

What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

The required travel and health documents for your Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$100 Cheap Flights from Missouri to Washington, D.C. Reagan-National Airport in 2026

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

As of May 2026, there are 68 flights per week flying from Missouri to Washington, D.C. Reagan-National Airport. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.

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

9 flights are operational daily from Missouri to Washington, D.C. Reagan-National Airport as of May 2026. The most popular departure time for this route is 3:00PM, with 52% of flights per day taking off at noon.

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Find the cheapest flights from Missouri to Washington, D.C.

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:08 pm - 12:59 pm

STL

DCA

15h 51m

1 stop

7:00 am - 6:53 pm

DCA

STL

12h 53m

1 stop

$244Frontier

Sat, Jun 6 - Sat, Jun 13

8:08 pm - 12:51 pm

STL

DCA

15h 43m

1 stop

7:00 am - 7:23 pm

DCA

STL

13h 23m

1 stop

$250Frontier

Sat, Aug 1 - Thu, Aug 6

8:30 am - 11:25 am

STL

DCA

1h 55mnonstop

8:00 am - 9:10 am

DCA

STL

2h 10mnonstop

$257Southwest

Tue, Jun 30 - Tue, Jul 7

1:24 pm - 4:29 pm

STL

DCA

2h 05mnonstop

7:45 pm - 9:12 pm

DCA

STL

2h 27mnonstop

$261American Airlines

Mon, Oct 5 - Tue, Oct 13

3:00 pm - 6:00 pm

STL

DCA

2h 00mnonstop

6:50 pm - 8:00 pm

DCA

STL

2h 10mnonstop

$265Southwest

Sat, Sep 5 - Mon, Sep 7

5:33 am - 9:19 am

MCI

DCA

2h 46mnonstop

7:30 am - 9:24 am

DCA

MCI

2h 54mnonstop

$289American Airlines

Wed, Jun 10 - Wed, Jun 17

4:00 pm - 9:45 pm

SGF

DCA

4h 45m

1 stop

4:00 pm - 10:19 pm

DCA

SGF

7h 19m

1 stop

$339Delta

Sat, May 23 - Wed, May 27

7:40 am - 3:38 pm

JLN

DCA

6h 58m

1 stop

7:00 pm - 11:19 pm

DCA

JLN

5h 19m

1 stop

$344United Airlines

Thu, Oct 15 - Mon, Oct 19

3:30 pm - 11:44 pm

SGF

DCA

7h 14m

1 stop

6:59 am - 10:46 am

DCA

SGF

4h 47m

1 stop

$359Delta

Thu, Jun 25 - Mon, Jun 29

8:00 am - 2:23 pm

COU

DCA

5h 23m

1 stop

5:10 pm - 10:35 pm

DCA

COU

6h 25m

1 stop

$388United Airlines

Wed, Aug 26 - Sat, Aug 29

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

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

Southwest

Jun 30

STL8:30 amLambert-St Louis

1h 55m

DCA11:25 amWashington, D.C. Reagan-National

Jul 7

DCA8:00 amWashington, D.C. Reagan-National

2h 10m

STL9:10 amLambert-St Louis

$257

Southwest

Jun 30

STL8:30 amLambert-St Louis

1h 55m

DCA11:25 amWashington, D.C. Reagan-National

Jul 7

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

4h 05m

1 stop

STL2:50 pmLambert-St Louis

$263

Southwest

Sep 5

STL3:00 pmLambert-St Louis

2h 00m

DCA6:00 pmWashington, D.C. Reagan-National

Sep 7

DCA6:50 pmWashington, D.C. Reagan-National

2h 10m

STL8:00 pmLambert-St Louis

$265

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

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

United Airlines

Oct 15

JLN7:40 amJoplin

6h 58m

1 stop

DCA3:38 pmWashington, D.C. Reagan-National

Oct 19

DCA7:00 pmWashington, D.C. Reagan-National

5h 19m

1 stop

JLN11:19 pmJoplin

$344

United Airlines

Aug 26

COU8:00 amColumbia Regional

5h 23m

1 stop

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

Aug 29

DCA5:10 pmWashington, D.C. Reagan-National

6h 25m

1 stop

COU10:35 pmColumbia Regional

$388

United Airlines

Jun 26

SGF3:07 pmSpringfield-Branson

6h 47m

1 stop

DCA10:54 pmWashington, D.C. Reagan-National

Jun 30

DCA1:00 pmWashington, D.C. Reagan-National

5h 51m

1 stop

SGF5:51 pmSpringfield-Branson

$403

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 6/6

8:08 pm-12:59 pm

1 stop15h 51m

Washington, D.C. Reagan-National

Sat 6/13

7:00 am-6:53 pm

1 stop12h 53m

$244

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 8/1

8:08 pm-12:51 pm

1 stop15h 43m

Washington, D.C. Reagan-National

Thu 8/6

7:00 am-7:23 pm

1 stop13h 23m

$250

Quickest round-trip

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Tue 6/30

8:30 am-11:25 am

Nonstop1h 55m

Washington, D.C. Reagan-National

Tue 7/7

8:00 am-9:10 am

Nonstop2h 10m

$257

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Mon 10/5

1:24 pm-4:29 pm

Nonstop2h 05m

Washington, D.C. Reagan-National

Tue 10/13

7:45 pm-9:12 pm

Nonstop2h 27m

$261

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 9/5

3:00 pm-6:00 pm

Nonstop2h 00m

Washington, D.C. Reagan-National

Mon 9/7

6:50 pm-8:00 pm

Nonstop2h 10m

$265

Kansas CityWashington, D.C.

MCI - DCA

MCIDCA

Kansas City

Wed 6/10

5:33 am-9:19 am

Nonstop2h 46m

Washington, D.C. Reagan-National

Wed 6/17

7:30 am-9:24 am

Nonstop2h 54m

$289

SpringfieldWashington, D.C.

SGF - DCA

SGFDCA

Springfield-Branson

Sat 5/23

4:00 pm-9:45 pm

1 stop4h 45m

Washington, D.C. Reagan-National

Wed 5/27

4:00 pm-10:19 pm

1 stop7h 19m

$339

JoplinWashington, D.C.

JLN - DCA

JLNDCA

Joplin

Thu 10/15

7:40 am-3:38 pm

1 stop6h 58m

Washington, D.C. Reagan-National

Mon 10/19

7:00 pm-11:19 pm

1 stop5h 19m

$344

SpringfieldWashington, D.C.

SGF - DCA

SGFDCA

Springfield-Branson

Thu 6/25

3:30 pm-11:44 pm

1 stop7h 14m

Washington, D.C. Reagan-National

Mon 6/29

6:59 am-10:46 am

1 stop4h 47m

$359

ColumbiaWashington, D.C.

COU - DCA

COUDCA

Columbia Regional

Wed 8/26

8:00 am-2:23 pm

1 stop5h 23m

Washington, D.C. Reagan-National

Sat 8/29

5:10 pm-10:35 pm

1 stop6h 25m

$388

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 Missouri to Washington, D.C. Reagan-National Airport

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 Washington, D.C. Reagan-National Airport?

The month of March is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Missouri, with most prices found around $96. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of March, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $98.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Missouri to Washington, D.C. Reagan-National Airport is on a Saturday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Saturday will often find tickets for as low as $312. Flights from Missouri to Washington, D.C. Reagan-National Airport on a Monday will generally be more expensive and average around $407. 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 Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Missouri to Washington, D.C. Reagan-National Airport flights are usually those with departure times at noon. Our users have found flights to Washington, D.C. Reagan-National Airport at noon for as low as $333. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the evening when prices are around $373.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $349 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Missouri for as low as $214 on momondo.

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

You could potentially save up to 10% on your flight if you consider stops on a Missouri to Washington, D.C. Reagan-National Airport flight.

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

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

Best Price Found	$182
Fastest flight time	1h 55m
Direct flights	Every day

The best one-way flight to Washington, D.C. Reagan-National Airport from Missouri in the past 72 hours is $182. The best round-trip flight deal from Missouri to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $327.

The fastest flight from Missouri to Washington, D.C. Reagan-National Airport takes 1h 55m

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

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

When did momondo last update prices for flights from Missouri to Washington, D.C. Reagan-National Airport?
Prices for flights from Missouri to Washington, D.C. Reagan-National Airport were last updated today.
How many operators does momondo search for flights from Missouri to Washington, D.C. Reagan-National Airport?
There are 5 operators available for flights from Missouri to Washington, D.C. Reagan-National Airport as of May 2026.
How old do you have to be to fly from Missouri to Washington, D.C. Reagan-National Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Washington, D.C. Reagan-National Airport.
What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?
The required travel and health documents for your Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport. 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 Missouri to Washington, D.C. Reagan-National Airport?
Based on momondo bookings for flights between Missouri and Washington, D.C. Reagan-National Airport, the leading plane model is Canadair (Bombardier) Regional Jet 900, making up 22.93% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 700 with 19.67%, Boeing 737 MAX 8 with 19.29%, and Embraer 175 with 10.80%.

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

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $96	Free Cancellation	Rating 5.6 2,950 reviews	Search Frontier flights
American Airlines	PriceFrom $156	Free Cancellation	Rating 7.1 11,661 reviews	Search American Airlines flights
Southwest	PriceFrom $197	Free Cancellation	Rating 8.0 4,295 reviews	Search Southwest flights
United Airlines	PriceFrom $248	Free Cancellation	Rating 7.4 9,701 reviews	Search United Airlines flights
Delta	PriceFrom $248	Free Cancellation	Rating 7.9 8,446 reviews	Search Delta flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Gaithersburg

Colonial Beach

Fredericksburg

Silver Spring

Towson

Rockville

Manassas

Linthicum Heights

Tysons

Bethesda

Springfield

Fairfax

College Park

Why use momondo?

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

It is quick and easy to find Missouri to Washington, D.C. 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 Washington, D.C. that suits you.

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

Yes. All flights to Washington, D.C. from Missouri on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 Washington, D.C. from Missouri.

I’m not ready to book a flight from Missouri to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Missouri to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Missouri to Washington, D.C. from $113

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 Washington, D.C. departing on 6/1. 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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Southwest flights from Missouri to Washington, D.C. Reagan-National Airport

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

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

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

momondo Fare Finder

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

See travel insights to Washington, D.C. from

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

What is the cheapest month to fly to Washington, D.C. Reagan-National Airport?

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

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

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

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

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

What airlines fly to Washington, D.C. Reagan-National Airport?

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

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

How long does it take to fly to Washington, D.C. Reagan-National Airport?

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

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

Best Price Found

Fastest flight time

Direct flights

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

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

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

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