How long is the flight from Missouri to Washington, D.C. Dulles Intl Airport?

There are many flights that can get you from Missouri to Washington, D.C. Dulles Intl Airport in 5h 06m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. Missouri and Washington, D.C. Dulles Intl Airport are separated by a distance of 873 mi. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Missouri to Washington, D.C. Dulles Intl Airport?

When deciding which route to take from Missouri to Washington, D.C. Dulles Intl Airport consider Kansas City - Washington, D.C. Dulles Intl, Lambert-St Louis - Washington, D.C. Dulles Intl or Springfield-Branson - Washington, D.C. Dulles Intl as they are the most popular.

What are the cheapest flights from Missouri to Washington, D.C. Dulles Intl Airport?

On average you can expect to pay $638 for a flight from Missouri to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $153 while the most popular route, (Kansas City - Washington, D.C. Dulles Intl) is currently priced at $133.

What are the most reliable airlines from Missouri to Washington, D.C. Dulles Intl Airport?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Missouri to Washington, D.C. Dulles Intl Airport on time: Avianca (84%), Copa Airlines (84%), Lufthansa (79%).

What are the most popular airlines that fly from Missouri to Washington, D.C. Dulles Intl Airport?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Missouri to Washington, D.C. Dulles Intl Airport.

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

To save up to 140% on this flight, we recommend booking at least 11 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Missouri to Washington, D.C. Dulles Intl Airport from $259 1-2 weeks out and tickets from $853 for flights departing within the next 72 hours.

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

Our data shows that August tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Missouri. Users have commonly found prices around $341 for the month, but tickets can be as low as $144. Due to multiple factors, prepare for potentially higher prices in March.

Can I find deals for flights from Missouri to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Missouri to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Missouri to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Dulles Intl.

Can I find deals for business class flights from Missouri to Dulles Intl?

Yes. Cheapflights offers flight deals from Missouri to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$55+ Cheap Flights from Missouri to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Missouri to Dulles Intl

Round-trip from	$186 (Frontier)
One-way from	$55 (Trip.com)
Popular in	March
Cheapest in	August
Average price	$354
Good round-trip deal	$613 or less
Good one-way deal	$265 or less

From Missouri to Washington, D.C. Dulles Intl

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One-way flight from Missouri to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).

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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Price to beat on a round-trip flight from Missouri to Washington, D.C. Dulles Intl.

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Price to beat on a one-way flight from Missouri to Washington, D.C. Dulles Intl.

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Find flight deals from Missouri to Dulles Intl

Cheapest flights from Missouri to Dulles Intl
Explore the most affordable flight options available from Missouri to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Thu 10/210:49 amSTL - IAD

2 stops11h 50mFrontier

Mon 10/66:10 amIAD - STL

1 stop9h 54mFrontier

Deal found 9/11

$186

Mon 9/224:00 pmSTL - IAD

1 stop7h 15mFrontier

Thu 9/256:10 amIAD - STL

1 stop9h 54mFrontier

Deal found 9/9

$188

Thu 11/1311:07 amSTL - IAD

1 stop4h 27mFrontier

Sun 11/166:00 amIAD - STL

1 stop5h 12mFrontier

Deal found 9/10

$190

Thu 9/114:00 pmSTL - IAD

1 stop7h 15mFrontier

Thu 10/166:15 amIAD - STL

1 stop5h 22mFrontier

Deal found 9/10

$193

Fri 10/36:42 pmSTL - IAD

1 stop4h 31mDelta

Tue 10/77:05 amIAD - STL

1 stop6h 30mDelta

Deal found 9/11

$197

Sun 10/2611:32 amSTL - IAD

1 stop10h 57mFrontier

Thu 10/306:00 amIAD - STL

1 stop5h 12mFrontier

Deal found 9/8

$199

Fri 10/176:05 pmSTL - IAD

1 stop25h 48mFrontier

Sun 10/196:15 amIAD - STL

1 stop5h 22mFrontier

Deal found 9/8

$201

Thu 9/184:00 pmSTL - IAD

1 stop7h 15mFrontier

Sun 9/2110:09 pmIAD - STL

2 stops17h 55mFrontier

Deal found 9/10

$206

Fri 9/191:57 pmSTL - IAD

1 stop27h 27mFrontier

Sun 9/217:09 pmIAD - STL

1 stop18h 53mFrontier

Deal found 9/8

$209

Sun 10/54:00 pmSTL - IAD

1 stop6h 39mFrontier

Thu 10/96:15 amIAD - STL

1 stop5h 22mFrontier

Deal found 9/9

$210

Sun 9/214:00 pmSTL - IAD

1 stop7h 15mFrontier

Mon 9/226:10 amIAD - STL

1 stop9h 54mFrontier

Deal found 9/9

$212

Thu 10/25:15 pmMCI - IAD

1 stop5h 24mFrontier

Sun 10/510:09 pmIAD - MCI

2 stops19h 11mFrontier

Deal found 9/10

$213

Best flights from Missouri to Dulles Intl
Discover carefully curated flight deals from Missouri to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Fri 10/37:10 amSTL - IAD

1 stop6h 23mDelta

Mon 10/67:35 pmIAD - STL

1 stop5h 06mDelta

Deal found 9/9

$197

Sat 11/16:43 pmSTL - IAD

1 stop4h 16mUnited Airlines

Mon 11/36:30 amIAD - STL

1 stop5h 21mUnited Airlines

Deal found 9/10

$235

Fri 12/124:28 pmSGF - IAD

1 stop5h 40mAmerican Airlines

Mon 1/56:05 amIAD - SGF

1 stop6h 31mAmerican Airlines

Deal found 9/9

$249

Fri 10/1711:37 amMCI - IAD

1 stop10h 52mFrontier

Sun 10/198:02 pmIAD - MCI

2 stops15h 40mFrontier

Deal found 9/11

$258

Fri 10/36:42 pmSTL - IAD

1 stop4h 31mDelta

Tue 10/77:05 amIAD - STL

1 stop6h 30mDelta

Deal found 9/10

$197

Fri 12/56:06 pmSTL - IAD

1 stop4h 02mDelta

Sun 12/77:01 amIAD - STL

1 stop4h 40mDelta

Deal found 9/9

$197

Thu 11/137:02 pmSTL - IAD

1 stop4h 16mDelta

Mon 11/175:59 pmIAD - STL

1 stop6h 41mDelta

Deal found 9/10

$197

Wed 10/15:47 pmMCI - IAD

Nonstop2h 38mUnited Airlines

Sun 10/58:20 amIAD - MCI

1 stop7h 00mUnited Airlines

Deal found 9/10

$244

Sat 11/86:00 amSGF - IAD

1 stop6h 12mAmerican Airlines

Wed 11/127:55 amIAD - SGF

1 stop5h 25mAmerican Airlines

Deal found 9/11

$249

Mon 11/33:59 pmSTL - IAD

1 stop6h 20mDelta

Tue 11/412:27 pmIAD - STL

1 stop6h 35mDelta

Deal found 9/10

$197

Sat 11/89:58 amMCI - IAD

1 stop6h 32mUnited Airlines

Sat 11/151:00 pmIAD - MCI

Nonstop2h 59mUnited Airlines

Deal found 9/10

$246

Thu 12/117:03 amSGF - IAD

1 stop8h 05mAmerican Airlines

Mon 1/56:05 amIAD - SGF

1 stop6h 31mAmerican Airlines

Deal found 9/10

$249

Last-minute flights from Missouri to Dulles Intl
Discover last-minute flight deals from Missouri to Dulles Intl. Data last updated September 11, 2025 and is based on user searches.

Thu 9/114:00 pmSTL - IAD

1 stop7h 15mFrontier

Thu 10/166:15 amIAD - STL

1 stop5h 22mFrontier

Deal found 9/10

$193

Thu 9/184:00 pmSTL - IAD

1 stop7h 15mFrontier

Sun 9/2110:09 pmIAD - STL

2 stops17h 55mFrontier

Deal found 9/10

$206

Thu 9/255:15 pmMCI - IAD

1 stop6h 00mFrontier

Thu 10/306:00 amIAD - MCI

1 stop5h 17mFrontier

Deal found 9/9

$214

Thu 9/255:15 pmMCI - IAD

1 stop6h 00mFrontier

Sun 9/281:55 pmIAD - MCI

1 stop27h 25mFrontier

Deal found 9/8

$215

Thu 9/255:15 pmMCI - IAD

1 stop6h 00mFrontier

Mon 9/296:10 amIAD - MCI

1 stop11h 10mFrontier

Deal found 9/9

$216

Wed 10/110:33 amMCI - IAD

1 stop4h 34mDelta

Fri 10/37:22 pmIAD - MCI

1 stop5h 22mDelta

Deal found 9/11

$217

Thu 10/210:49 amSTL - IAD

2 stops11h 50mFrontier

Mon 10/66:10 amIAD - STL

1 stop9h 54mFrontier

Deal found 9/11

$186

Thu 10/25:15 pmMCI - IAD

1 stop5h 24mFrontier

Sun 10/510:09 pmIAD - MCI

2 stops19h 11mFrontier

Deal found 9/10

$213

Fri 10/36:42 pmSTL - IAD

1 stop4h 31mDelta

Tue 10/77:05 amIAD - STL

1 stop6h 30mDelta

Deal found 9/11

$197

Sun 10/57:55 pmSTL - IAD

2 stops16h 00mFrontier

Sun 10/126:15 amIAD - STL

1 stop5h 22mFrontier

Deal found 9/9

$190

Thu 10/95:00 amSTL - IAD

1 stop5h 55mUnited Airlines

Sun 10/128:40 amIAD - STL

Nonstop2h 22mUnited Airlines

Deal found 9/11

$214

Fri 10/176:05 pmSTL - IAD

1 stop25h 48mFrontier

Sun 10/196:15 amIAD - STL

1 stop5h 22mFrontier

Deal found 9/11

$210

One-way flights from Missouri to Dulles Intl
Search for one-way flight options from Missouri to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Mon 11/1011:12 amMCI - IAD

1 stop11h 59mFrontier

Deal found 9/10

$55

Fri 11/1411:12 amMCI - IAD

1 stop11h 59mFrontier

Deal found 9/9

$60

Sun 11/911:12 amMCI - IAD

1 stop28h 22mFrontier

Deal found 9/9

$61

Fri 10/3111:12 amMCI - IAD

1 stop11h 17mFrontier

Deal found 9/10

$66

Tue 11/188:25 amSTL - IAD

Nonstop2h 08mUnited Airlines

Deal found 9/11

$67

Sat 10/185:47 pmMCI - IAD

Nonstop2h 38mUnited Airlines

Deal found 9/10

$67

Thu 9/255:15 pmMCI - IAD

1 stop6h 00mFrontier

Deal found 9/9

$71

Thu 9/184:00 pmSTL - IAD

1 stop7h 15mFrontier

Deal found 9/11

$72

Mon 11/311:12 amMCI - IAD

1 stop5h 11mFrontier

Deal found 9/10

$72

Thu 11/611:07 amSTL - IAD

1 stop4h 27mFrontier

Deal found 9/9

$73

Mon 10/64:00 pmSTL - IAD

1 stop6h 16mFrontier

Deal found 9/11

$77

Fri 10/246:42 pmSTL - IAD

1 stop25h 11mFrontier

Deal found 9/10

$78

Cheapflights 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

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Fri 10/3

7:10 am-2:33 pm

1 stop6h 23m

Washington, D.C. Dulles Intl

Mon 10/6

7:35 pm-11:41 pm

1 stop5h 06m

$197

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Fri 10/3

6:42 pm-12:13 am

1 stop4h 31m

Washington, D.C. Dulles Intl

Tue 10/7

7:05 am-12:35 pm

1 stop6h 30m

$197

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Fri 12/5

6:06 pm-11:08 pm

1 stop4h 02m

Washington, D.C. Dulles Intl

Sun 12/7

7:01 am-10:41 am

1 stop4h 40m

$197

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Thu 11/13

7:02 pm-12:18 am

1 stop4h 16m

Washington, D.C. Dulles Intl

Mon 11/17

5:59 pm-11:40 pm

1 stop6h 41m

$197

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Mon 11/3

3:59 pm-11:19 pm

1 stop6h 20m

Washington, D.C. Dulles Intl

Tue 11/4

12:27 pm-6:02 pm

1 stop6h 35m

$197

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Thu 11/6

1:30 pm-6:38 pm

1 stop4h 08m

Washington, D.C. Dulles Intl

Mon 11/10

7:21 pm-11:40 pm

1 stop5h 19m

$197

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 10/25

5:15 pm-11:18 pm

1 stop5h 03m

Washington, D.C. Dulles Intl

Mon 10/27

7:35 pm-11:41 pm

1 stop5h 06m

$197

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 11/1

1:30 pm-7:24 pm

1 stop4h 54m

Washington, D.C. Dulles Intl

Wed 11/5

10:11 am-2:43 pm

1 stop5h 32m

$197

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Tue 10/7

4:39 pm-11:18 pm

1 stop5h 39m

Washington, D.C. Dulles Intl

Sat 10/18

5:52 pm-11:52 pm

1 stop7h 00m

$217

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 10/1

10:19 am-6:22 pm

1 stop7h 03m

Washington, D.C. Dulles Intl

Sun 10/5

6:00 am-11:03 am

1 stop6h 03m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 59 results

...

Best time to book a flight from Missouri to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Missouri with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Missouri to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Missouri to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Missouri to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MO to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Washington, D.C. Dulles Intl Airport as you normally would.

Weekly flight availability from Missouri to Washington, D.C. Dulles Intl Airport

The most flights from USMO to IAD are scheduled on a Thursday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Related info for your journey

How long is the flight from Missouri to Washington, D.C. Dulles Intl Airport?
There are many flights that can get you from Missouri to Washington, D.C. Dulles Intl Airport in 5h 06m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. Missouri and Washington, D.C. Dulles Intl Airport are separated by a distance of 873 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the most popular routes from Missouri to Washington, D.C. Dulles Intl Airport?
When deciding which route to take from Missouri to Washington, D.C. Dulles Intl Airport consider Kansas City - Washington, D.C. Dulles Intl, Lambert-St Louis - Washington, D.C. Dulles Intl or Springfield-Branson - Washington, D.C. Dulles Intl as they are the most popular.
What are the most reliable airlines from Missouri to Washington, D.C. Dulles Intl Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Missouri to Washington, D.C. Dulles Intl Airport on time: Avianca (84%), Copa Airlines (84%), Lufthansa (79%).
What are the cheapest flights from Missouri to Washington, D.C. Dulles Intl Airport?
On average you can expect to pay $638 for a flight from Missouri to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $153 while the most popular route, (Kansas City - Washington, D.C. Dulles Intl) is currently priced at $133.
Can I find deals for flights from Missouri to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Missouri to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Missouri to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Dulles Intl.
Can I find deals for business class flights from Missouri to Dulles Intl?
Yes. Cheapflights offers flight deals from Missouri to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Missouri to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Missouri to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Missouri to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Woodbridge

Alexandria

Arlington

Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

Oxon Hill

Laurel

Towson

Dundalk

National Harbor

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Missouri to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$129	Average$352	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$168	Average$280	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$211	Average$438	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$308	Average$379	FlexibilityNo cancel fee	On-time63%

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$55+ Cheap flights from Missouri to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Missouri to Dulles Intl

Keep the following information in mind while searching for Missouri to Dulles Intl flight deals. Data was last updated September 11, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Missouri to Dulles Intl

Cheapest flights from Missouri to Dulles IntlExplore the most affordable flight options available from Missouri to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Missouri to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights 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.

Best time to book a flight from Missouri to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Missouri with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Missouri to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to fly from MO to IAD?

Find hourly flight availability from Missouri to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Weekly flight availability from Missouri to Washington, D.C. Dulles Intl Airport

Related info for your journey

Find useful and relevant information for your journey from Missouri to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Missouri to Washington, D.C. Dulles Intl Airport?

What are the most popular routes from Missouri to Washington, D.C. Dulles Intl Airport?

What are the most reliable airlines from Missouri to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from Missouri to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Missouri to Dulles Intl that include hotel bookings?

How can I find direct flights from Missouri to Dulles Intl?

Can I find deals for business class flights from Missouri to Dulles Intl?

What is the cheapest month to book a flight from Missouri to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Missouri to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Missouri to Dulles Intl

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Cheapest flights from Missouri to Dulles Intl
Explore the most affordable flight options available from Missouri to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.