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 66% 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 10m 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 31m. 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 Southwest 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 March 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.

$65 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 week?

As of March 2026, there are 53 flights per week flying from Missouri to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Fri, with 26% of flights taking off on this day.

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

As of March 2026, there are 7 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 67% of flights taking off in the afternoon.

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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.

8:23 pm - 9:54 am

STL

IAD

12h 31m

1 stop

6:19 pm - 11:19 pm

IAD

STL

30h 00m

2 stops

$237Frontier

Fri, Apr 17 - Mon, Apr 20

5:27 pm - 10:12 am

STL

IAD

15h 45m

1 stop

11:12 am - 12:21 am

IAD

STL

14h 09m

2 stops

$239Frontier

Sat, May 16 - Mon, May 18

8:08 pm - 10:12 am

STL

IAD

13h 04m

2 stops

7:45 am - 5:33 pm

IAD

STL

10h 48m

1 stop

$241Frontier

Fri, May 29 - Thu, Jun 4

9:10 am - 4:03 pm

STL

IAD

5h 53m

1 stop

5:26 pm - 9:13 pm

IAD

STL

4h 47m

1 stop

$242United Airlines

Tue, Apr 21 - Tue, Apr 28

6:30 am - 11:48 am

STL

IAD

4h 18m

1 stop

9:00 am - 10:31 am

IAD

STL

2h 31mnonstop

$253United Airlines

Sat, Apr 18 - Sat, Apr 25

6:12 pm - 12:13 am

SGF

IAD

5h 01m

1 stop

6:18 am - 12:16 pm

IAD

SGF

6h 58m

1 stop

$279American Airlines

Tue, Jun 2 - Tue, Jun 9

5:13 pm - 12:51 am

MCI

IAD

6h 38m

1 stop

6:58 pm - 11:16 pm

IAD

MCI

5h 18m

1 stop

$283Delta

Wed, May 27 - Mon, Jun 1

5:12 pm - 12:42 am

MCI

IAD

6h 30m

1 stop

6:00 am - 1:01 pm

IAD

MCI

8h 01m

1 stop

$291Delta

Tue, Apr 14 - Sat, Apr 18

10:16 am - 11:59 pm

COU

IAD

12h 43m

2 stops

10:32 am - 9:30 pm

IAD

COU

11h 58m

2 stops

$329American Airlines

Fri, May 1 - Tue, May 5

1:40 pm - 7:34 am

IRK

IAD

16h 54m

2 stops

6:00 am - 7:20 pm

IAD

IRK

14h 20m

2 stops

$1,251Multiple Airlines

Tue, May 26 - Thu, May 28

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

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

Frontier

Apr 1

STL4:54 pmLambert-St Louis

13h 53m

1 stop

IAD7:47 amWashington, D.C. Dulles Intl

Apr 4

IAD1:33 pmWashington, D.C. Dulles Intl

10h 52m

1 stop

STL11:25 pmLambert-St Louis

$237

Frontier

May 16

STL5:27 pmLambert-St Louis

15h 45m

1 stop

IAD10:12 amWashington, D.C. Dulles Intl

May 18

IAD11:12 amWashington, D.C. Dulles Intl

14h 09m

2 stops

STL12:21 amLambert-St Louis

$239

Frontier

Mar 28

STL4:21 pmLambert-St Louis

13h 59m

1 stop

IAD7:20 amWashington, D.C. Dulles Intl

Apr 4

IAD1:33 pmWashington, D.C. Dulles Intl

10h 52m

1 stop

STL11:25 pmLambert-St Louis

$240

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

Apr 18

STL1:03 pmLambert-St Louis

5h 53m

1 stop

IAD7:56 pmWashington, D.C. Dulles Intl

Apr 20

IAD7:19 pmWashington, D.C. Dulles Intl

5h 17m

1 stop

STL11:36 pmLambert-St Louis

$263

Delta

Apr 14

STL7:25 amLambert-St Louis

5h 39m

1 stop

IAD2:04 pmWashington, D.C. Dulles Intl

Apr 22

IAD7:19 pmWashington, D.C. Dulles Intl

5h 17m

1 stop

STL11:36 pmLambert-St Louis

$273

Delta

May 27

MCI5:13 pmKansas City

6h 38m

1 stop

IAD12:51 amWashington, D.C. Dulles Intl

Jun 1

IAD6:58 pmWashington, D.C. Dulles Intl

5h 18m

1 stop

MCI11:16 pmKansas City

$283

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

Fri 4/17

8:23 pm-9:54 am

1 stop12h 31m

Washington, D.C. Dulles Intl

Mon 4/20

6:19 pm-11:19 pm

2 stops30h 00m

$237

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 5/16

5:27 pm-10:12 am

1 stop15h 45m

Washington, D.C. Dulles Intl

Mon 5/18

11:12 am-12:21 am

2 stops14h 09m

$239

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Fri 5/29

8:08 pm-10:12 am

2 stops13h 04m

Washington, D.C. Dulles Intl

Thu 6/4

7:45 am-5:33 pm

1 stop10h 48m

$241

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Tue 4/21

9:10 am-4:03 pm

1 stop5h 53m

Washington, D.C. Dulles Intl

Tue 4/28

5:26 pm-9:13 pm

1 stop4h 47m

$242

Quickest round-trip

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 4/18

6:30 am-11:48 am

1 stop4h 18m

Washington, D.C. Dulles Intl

Sat 4/25

9:00 am-10:31 am

Nonstop2h 31m

$253

SpringfieldWashington, D.C.

SGF - IAD

SGFIAD

Springfield-Branson

Tue 6/2

6:12 pm-12:13 am

1 stop5h 01m

Washington, D.C. Dulles Intl

Tue 6/9

6:18 am-12:16 pm

1 stop6h 58m

$279

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 5/27

5:13 pm-12:51 am

1 stop6h 38m

Washington, D.C. Dulles Intl

Mon 6/1

6:58 pm-11:16 pm

1 stop5h 18m

$283

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Tue 4/14

5:12 pm-12:42 am

1 stop6h 30m

Washington, D.C. Dulles Intl

Sat 4/18

6:00 am-1:01 pm

1 stop8h 01m

$291

ColumbiaWashington, D.C.

COU - IAD

COUIAD

Columbia Regional

Fri 5/1

10:16 am-11:59 pm

2 stops12h 43m

Washington, D.C. Dulles Intl

Tue 5/5

10:32 am-9:30 pm

2 stops11h 58m

$329

KirksvilleWashington, D.C.

IRK - IAD

IRKIAD

Kirksville Cannon Memorial

Tue 5/26

1:40 pm-7:34 am

2 stops16h 54m

Washington, D.C. Dulles Intl

Thu 5/28

6:00 am-7:20 pm

2 stops14h 20m

$1,251

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 $170. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $315.

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

Our data shows that Friday 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 $823. 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 $1,141.

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 $849 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 $1,124 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 Lambert-St Louis 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 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 $377 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 $233 on momondo.

What cabin class options are available on Missouri to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on Missouri to Washington, D.C. Dulles Intl 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 Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 32% 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	$381
Fastest flight time	2h 10m
Direct flights	Every day

The best one-way flight to Washington, D.C. Dulles Intl Airport from Missouri in the past 72 hours is $381. The best round-trip flight deal from Missouri to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $455.

The fastest flight from Missouri to Washington, D.C. Dulles Intl Airport takes 2h 10m

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

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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 March 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) (21.26% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet CRJ-550 (14.49%), Canadair (Bombardier) Regional Jet 900 (13.53%), and Boeing 737 MAX 8 (12.08%).

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 5.7 3,013 reviews	Search Frontier flights
Delta	PriceFrom $99	Free Cancellation	Rating 7.9 8,357 reviews	Search Delta flights
American Airlines	PriceFrom $257	Free Cancellation	Rating 7.1 11,520 reviews	Search American Airlines flights
United Airlines	PriceFrom $259	Free Cancellation	Rating 7.4 9,499 reviews	Search United Airlines flights

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Waldorf

Woodbridge

Laurel

Colonial Beach

Gaithersburg

Towson

Silver Spring

Fredericksburg

Rockville

Tysons

Manassas

Sterling

Linthicum Heights

Springfield

Bethesda

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Missouri to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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 $65

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 6/10. 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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Frontier flights from Missouri to Washington, D.C. Dulles Intl Airport

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

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

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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 to Washington, D.C. Dulles Intl Airport?

What cabin class options are available on Missouri to Washington, D.C. Dulles Intl flights?

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

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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List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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