What airlines fly to Washington, D.C. Dulles Intl Airport?

United Airlines, Delta and Frontier are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Missouri according to our data. United Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 4 different airlines that fly to Washington, D.C. Dulles Intl 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. Dulles Intl Airport?

Flight times from Missouri to Washington, D.C. Dulles Intl 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. Dulles Intl 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.

What is the cheapest airline that flies from Missouri to Washington, D.C. Dulles Intl?

Delta, United Airlines, and Allegiant Air are the most popular carriers operating from Missouri to Washington, D.C. Dulles Intl

How many operators does momondo search for flights from Missouri to Washington, D.C. Dulles Intl Airport?

As of May 2026, there are 4 operators available to choose from for flights from Missouri to Washington, D.C. Dulles Intl Airport.

How old do you have to be to fly from Missouri to Washington, D.C. Dulles Intl Airport?

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 Washington, D.C. Dulles Intl Airport.

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$123 Cheap Flights from Missouri to Washington, D.C. Dulles Intl Airport in 2026

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

As of May 2026, there are 12 flights per day flying from Missouri to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 12:00PM, with 76% of flights taking off in the afternoon.

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

As of May 2026, there are 87 flights per week flying from Missouri to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Sun, with 18% of flights taking off on this day.

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

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Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:03 pm - 8:20 am

STL

IAD

12h 17m

1 stop

1:23 pm - 11:59 pm

IAD

STL

11h 36m

1 stop

$244Frontier

Tue, Jul 7 - Sat, Jul 11

8:08 pm - 10:12 am

STL

IAD

13h 04m

2 stops

8:47 pm - 8:55 am

IAD

STL

13h 08m

1 stop

$246Frontier

Thu, Jun 4 - Sun, Jun 7

4:52 pm - 11:13 pm

STL

IAD

5h 21m

1 stop

2:52 pm - 11:59 pm

IAD

STL

10h 07m

2 stops

$250Multiple Airlines

Sat, Aug 15 - Mon, Aug 17

12:30 pm - 4:03 pm

MCI

IAD

2h 33mnonstop

5:15 pm - 7:03 pm

IAD

MCI

2h 48mnonstop

$281United Airlines

Tue, Jul 14 - Tue, Jul 28

3:09 pm - 8:04 pm

MCI

IAD

27h 55m

1 stop

8:57 pm - 1:00 pm

IAD

MCI

17h 03m

2 stops

$285Multiple Airlines

Fri, Jun 12 - Wed, Jun 17

5:10 pm - 12:45 am

MCI

IAD

6h 35m

1 stop

5:15 pm - 7:03 pm

IAD

MCI

2h 48mnonstop

$291United Airlines

Wed, Jul 8 - Tue, Jul 14

4:52 pm - 11:47 pm

SGF

IAD

5h 55m

1 stop

7:57 am - 11:46 am

IAD

SGF

4h 49m

1 stop

$309American Airlines

Sat, Aug 8 - Tue, Aug 18

4:52 pm - 11:47 pm

SGF

IAD

5h 55m

1 stop

7:57 am - 6:13 pm

IAD

SGF

11h 16m

2 stops

$314American Airlines

Sat, Aug 8 - Tue, Aug 18

6:49 pm - 12:51 am

SGF

IAD

5h 02m

1 stop

6:00 am - 10:55 am

IAD

SGF

5h 55m

1 stop

$324Delta

Tue, Jun 2 - Tue, Jun 9

6:57 pm - 12:44 am

SGF

IAD

4h 47m

1 stop

6:00 am - 10:46 am

IAD

SGF

5h 46m

1 stop

$354Delta

Wed, Jun 24 - Wed, Jul 1

Delta flights from Missouri to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Missouri to Washington, D.C. Dulles Intl Airport flight tickets

Delta

Sep 24

STL5:30 pmLambert-St Louis

5h 40m

1 stop

IAD12:10 amWashington, D.C. Dulles Intl

Sep 28

IAD7:00 amWashington, D.C. Dulles Intl

6h 53m

1 stop

STL12:53 pmLambert-St Louis

$289

Delta

Jun 15

STL7:12 pmLambert-St Louis

4h 32m

1 stop

IAD12:44 amWashington, D.C. Dulles Intl

Jun 23

IAD5:29 pmWashington, D.C. Dulles Intl

4h 10m

1 stop

STL8:39 pmLambert-St Louis

$296

Delta

Jun 10

MCI7:00 amKansas City

6h 02m

1 stop

IAD2:02 pmWashington, D.C. Dulles Intl

Jun 17

IAD6:00 amWashington, D.C. Dulles Intl

6h 20m

1 stop

MCI11:20 amKansas City

$301

United Airlines flights from Missouri to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Missouri to Washington, D.C. Dulles Intl Airport flight tickets

United Airlines

Jun 30

STL12:55 pmLambert-St Louis

2h 12m

IAD4:07 pmWashington, D.C. Dulles Intl

Jul 14

IAD5:42 pmWashington, D.C. Dulles Intl

4h 44m

1 stop

STL9:26 pmLambert-St Louis

$267

United Airlines

Jul 14

MCI12:30 pmKansas City

2h 33m

IAD4:03 pmWashington, D.C. Dulles Intl

Jul 28

IAD5:15 pmWashington, D.C. Dulles Intl

2h 48m

MCI7:03 pmKansas City

$281

United Airlines

Jun 6

STL12:55 pmLambert-St Louis

2h 12m

IAD4:07 pmWashington, D.C. Dulles Intl

Jun 10

IAD10:31 amWashington, D.C. Dulles Intl

6h 15m

1 stop

STL3:46 pmLambert-St Louis

$284

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Tue 7/7

7:03 pm-8:20 am

1 stop12h 17m

Washington, D.C. Dulles Intl

Sat 7/11

1:23 pm-11:59 pm

1 stop11h 36m

$244

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Thu 6/4

8:08 pm-10:12 am

2 stops13h 04m

Washington, D.C. Dulles Intl

Sun 6/7

8:47 pm-8:55 am

1 stop13h 08m

$246

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 8/15

4:52 pm-11:13 pm

1 stop5h 21m

Washington, D.C. Dulles Intl

Mon 8/17

2:52 pm-11:59 pm

2 stops10h 07m

$250

Quickest round-trip

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Tue 7/14

12:30 pm-4:03 pm

Nonstop2h 33m

Washington, D.C. Dulles Intl

Tue 7/28

5:15 pm-7:03 pm

Nonstop2h 48m

$281

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Fri 6/12

3:09 pm-8:04 pm

1 stop27h 55m

Washington, D.C. Dulles Intl

Wed 6/17

8:57 pm-1:00 pm

2 stops17h 03m

$285

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 7/8

5:10 pm-12:45 am

1 stop6h 35m

Washington, D.C. Dulles Intl

Tue 7/14

5:15 pm-7:03 pm

Nonstop2h 48m

$291

SpringfieldWashington, D.C.

SGF - IAD

SGFIAD

Springfield-Branson

Sat 8/8

4:52 pm-11:47 pm

1 stop5h 55m

Washington, D.C. Dulles Intl

Tue 8/18

7:57 am-11:46 am

1 stop4h 49m

$309

SpringfieldWashington, D.C.

SGF - IAD

SGFIAD

Springfield-Branson

Sat 8/8

4:52 pm-11:47 pm

1 stop5h 55m

Washington, D.C. Dulles Intl

Tue 8/18

7:57 am-6:13 pm

2 stops11h 16m

$314

SpringfieldWashington, D.C.

SGF - IAD

SGFIAD

Springfield-Branson

Tue 6/2

6:49 pm-12:51 am

1 stop5h 02m

Washington, D.C. Dulles Intl

Tue 6/9

6:00 am-10:55 am

1 stop5h 55m

$324

SpringfieldWashington, D.C.

SGF - IAD

SGFIAD

Springfield-Branson

Wed 6/24

6:57 pm-12:44 am

1 stop4h 47m

Washington, D.C. Dulles Intl

Wed 7/1

6:00 am-10:46 am

1 stop5h 46m

$354

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. Dulles Intl 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. Dulles Intl Airport?

In general, February is the cheapest month to fly from Missouri to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $73. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $90.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Tuesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $809. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Missouri to Washington, D.C. Dulles Intl Airport for around $1,130.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Missouri in the morning is the least expensive time of day to depart. momondo users have found prices as low as $847 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,121 on average. Flights to Washington, D.C. Dulles Intl Airport from Missouri at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Missouri to Washington, D.C. Dulles Intl flight route?

Fly from Kansas City to Washington, D.C. Dulles Intl for the best Missouri - Washington, D.C. Dulles Intl flight prices

How far in advance should I book a flight from Missouri to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $356 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Missouri for as low as $236 on momondo.

Can stopping save me money on Missouri to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 48% on your flight if you consider stops on a Missouri to Washington, D.C. Dulles Intl Airport flight.

Cheap Missouri to Washington, D.C. Dulles Intl Airport flight deals and tips

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

Best Price Found	$268
Fastest flight time	2h 06m
Direct flights	Every day

The best one-way flight to Washington, D.C. Dulles Intl Airport from Missouri in the past 72 hours is $268. The best round-trip flight deal from Missouri to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $502.

The fastest flight from Missouri to Washington, D.C. Dulles Intl Airport takes 2h 06m

Direct flights go from Missouri to Washington, D.C. Dulles Intl Airport every day.

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Frequently asked questions about flying from Missouri to Washington, D.C. Dulles Intl Airport

When did momondo last update prices for flights from Missouri to Washington, D.C. Dulles Intl Airport?
Prices for flights from Missouri to Washington, D.C. Dulles Intl Airport were last updated today.
How many operators does momondo search for flights from Missouri to Washington, D.C. Dulles Intl Airport?
As of May 2026, there are 4 operators available to choose from for flights from Missouri to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Missouri to Washington, D.C. Dulles Intl Airport?
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 Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Missouri to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Missouri to Washington, D.C. Dulles Intl Airport is Embraer 175 (Enhanced Winglets) (26.09% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet CRJ-550 (13.44%), Airbus A319 (11.86%), and Canadair (Bombardier) Regional Jet 900 (11.86%).

Best airlines flying from Missouri to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Missouri to Washington, D.C. Dulles Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $90	Free Cancellation	Rating 5.6 2,948 reviews	Search Frontier flights
Delta	PriceFrom $141	Free Cancellation	Rating 7.9 8,451 reviews	Search Delta flights
American Airlines	PriceFrom $257	Free Cancellation	Rating 7.1 11,654 reviews	Search American Airlines flights
United Airlines	PriceFrom $266	Free Cancellation	Rating 7.4 9,731 reviews	Search United Airlines flights

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Waldorf

Woodbridge

Laurel

Gaithersburg

Colonial Beach

Fredericksburg

Silver Spring

Towson

Rockville

Manassas

Sterling

Linthicum Heights

Tysons

Bethesda

Springfield

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

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

Yes. momondo allows you to filter the results for Missouri to Washington, D.C. flights to just show those with flexible booking policies.

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

Once all potential Missouri to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Washington, D.C. from Missouri are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Missouri to Washington, D.C. from $123

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 6/8. 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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Delta flights from Missouri to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Missouri to Washington, D.C. Dulles Intl Airport flight tickets

United Airlines flights from Missouri to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Missouri to Washington, D.C. Dulles Intl Airport flight tickets

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Use the filters below to find and compare flights from Missouri to Washington, D.C. Dulles Intl 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. Dulles Intl Airport

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest Missouri to Washington, D.C. Dulles Intl flight route?

How far in advance should I book a flight from Missouri to Washington, D.C. Dulles Intl Airport?

Can stopping save me money on Missouri to Washington, D.C. Dulles Intl Airport flights?

What is the cheapest airline that flies from Missouri to Washington, D.C. Dulles Intl?

What airlines fly to Washington, D.C. Dulles Intl Airport?

How many flights depart from Missouri to Washington, D.C. Dulles Intl Airport on average per day?

How many flights depart from Missouri to Washington, D.C. Dulles Intl Airport on average per week?

How long does it take to fly to Washington, D.C. Dulles Intl Airport?

Cheap Missouri to Washington, D.C. Dulles Intl Airport flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Missouri to Washington, D.C. Dulles Intl Airport

Best airlines flying from Missouri to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Missouri to Washington, D.C. Dulles Intl Airport with momondo

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