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Dulles Intl

$143+ Cheap flights from Cape Cod and the Islands 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
ACK — IAD
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from Cape Cod and the Islands to Dulles Intl

Keep the following information in mind while searching for Cape Cod and the Islands to Dulles Intl flight deals. Data was last updated April 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$353
(American Airlines)

One-way from

$143
(Delta)

Popular in

April

Cheapest in

January

Average price

$239
Provider with most accurate pricing for Boston Logan Intl-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Washington, D.C. (WAS) flights.
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From Cape Cod and the Islands to Washington, D.C. Dulles Intl
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One-way flight from Cape Cod and the Islands to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 7% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Cape Cod and the Islands to Dulles Intl

Cheapest flights from Cape Cod and the Islands to Dulles Intl
Explore the most affordable flight options available from Cape Cod and the Islands to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/182:08 pmMVY - IAD
2 stops9h 51mAmerican Airlines
Sat 8/236:34 amIAD - MVY
1 stop4h 34mAmerican Airlines
Deal found 4/29$353
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/273:08 pmMVY - IAD
1 stop4h 34mDelta
Tue 6/36:00 amIAD - MVY
2 stops8h 28mDelta
Deal found 4/28$408
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/302:12 pmACK - IAD
1 stop5h 30mDelta
Mon 6/26:00 amIAD - ACK
2 stops8h 59mDelta
Deal found 4/29$494
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2712:19 pmHYA - IAD
2 stops11h 40mAmerican Airlines
Mon 6/305:41 pmIAD - HYA
2 stops18h 07mAmerican Airlines
Deal found 4/28$608
This United deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/213:00 pmMVY - IAD
1 stop16h 10mMultiple Airlines
Fri 9/2610:18 pmIAD - MVY
1 stop9h 47mMultiple Airlines
Deal found 4/28$924
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/144:55 pmACK - IAD
1 stop4h 02mMultiple Airlines
Sun 5/189:00 amIAD - ACK
1 stop4h 45mMultiple Airlines
Deal found 4/29$1,076

Cheapflights Fare Finder

Customize your flight search to find flights from Cape Cod and the Islands to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2025.
Use the filters below to find and compare flights from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Cape Cod and the Islands

Fly to

Dulles Intl

Route

Depart

Return

Price

West TisburyWashington, D.C.

MVY - IAD

MVYIAD

West Tisbury Martha's Vineyard

Mon 8/18

2:08 pm-11:59 pm

2 stops9h 51m

Washington, D.C. Dulles Intl

Sat 8/23

6:34 am-11:08 am

1 stop4h 34m

$353

West TisburyWashington, D.C.

MVY - IAD

MVYIAD

West Tisbury Martha's Vineyard

Tue 5/27

3:08 pm-7:42 pm

1 stop4h 34m

Washington, D.C. Dulles Intl

Tue 6/3

6:00 am-2:28 pm

2 stops8h 28m

$408

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Fri 5/30

2:12 pm-7:42 pm

1 stop5h 30m

Washington, D.C. Dulles Intl

Mon 6/2

6:00 am-2:59 pm

2 stops8h 59m

$494

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Fri 6/27

12:19 pm-11:59 pm

2 stops11h 40m

Washington, D.C. Dulles Intl

Mon 6/30

5:41 pm-11:48 am

2 stops18h 07m

$608

West TisburyWashington, D.C.

MVY - IAD

MVYIAD

West Tisbury Martha's Vineyard

Sun 9/21

3:00 pm-7:10 am

1 stop16h 10m

Washington, D.C. Dulles Intl

Fri 9/26

10:18 pm-8:05 am

1 stop9h 47m

$924

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Wed 5/14

4:55 pm-8:57 pm

1 stop4h 02m

Washington, D.C. Dulles Intl

Sun 5/18

9:00 am-1:45 pm

1 stop4h 45m

$1,076

West TisburyWashington, D.C.

MVY - IAD

MVYIAD

West Tisbury Martha's Vineyard

Fri 6/13

2:16 pm-7:50 pm

1 stop5h 34m

$143

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Tue 5/20

3:50 pm-1:41 pm

1 stop21h 51m

$248

West TisburyWashington, D.C.

MVY - IAD

MVYIAD

West Tisbury Martha's Vineyard

Fri 5/16

7:28 pm-11:11 am

2 stops15h 43m

$368

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Fri 5/9

4:55 pm-8:57 pm

1 stop4h 02m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 15 results
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Best time to book a flight from Cape Cod and the Islands to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Cape Cod and the Islands 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 Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

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.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated April 30, 2025.
See what other customers who have flown with Delta, United Airlines and American Airlines from Cape Cod and the Islands to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

  • What are the cheapest airlines to fly from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $143. American Airlines flights start at $467 while deals on United Airlines start at $496 one-way.

  • What are the most popular routes from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport?

    The most popular route from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport is West Tisbury Martha's Vineyard - Washington, D.C. Dulles Intl. You may also consider Hyannis Barnstable - Washington, D.C. Dulles Intl or Nantucket Memorial - Washington, D.C. Dulles Intl.

  • Can I find deals for flights from Cape Cod and the Islands to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Cape Cod and the Islands to Dulles Intl?

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

  • Can I find deals for business class flights from Cape Cod and the Islands to Dulles Intl?

    Yes. Cheapflights offers flight deals from Cape Cod and the Islands 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 Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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

Traveling to a place near Cape Cod and the Islands?

Book flights to Cape Cod and the Islands if you plan to visit one of these locations
Alexandria
Arlington
Woodbridge
Tysons
Fairfax
Springfield
Rockville
Fredericksburg
Silver Spring
Gaithersburg
Linthicum Heights
Falls Church
Laurel
Easton
Towson
Herndon
Sterling
Bowie
National Harbor
Oxon Hill

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