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Cape Cod and the Islands

$108+ Cheap flights from Dulles Intl (IAD) to Cape Cod and the Islands

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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ACK
Aug 11 — Aug 181
Mon 8/11
Mon 8/18
1 adult, Economy
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Cheap flight deals from Dulles Intl to Cape Cod and the Islands

Keep the following information in mind while searching for Dulles Intl to Cape Cod and the Islands flight deals. Data was last updated August 6, 2025.

Round-trip from

$212
(Delta)

One-way from

$108
(United Airlines)

Popular in

April

Cheapest in

January

Average price

$208
From Washington, D.C. Dulles Intl to Cape Cod and the Islands
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One-way flight from Washington, D.C. Dulles Intl to Cape Cod and the Islands
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Highest demand for flights based on searches. 8% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Dulles Intl to Cape Cod and the Islands

Cheapest flights from Dulles Intl to Cape Cod and the Islands
Explore the most affordable flight options available from Dulles Intl to Cape Cod and the Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2025.

This Delta deal was found by Cheapflights users on 8/3. 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 8/196:00 amIAD - ACK
2 stops10h 09mDelta
Fri 8/223:26 pmACK - IAD
1 stop4h 17mDelta
Deal found 8/3$212
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Tue 8/198:40 amIAD - ACK
1 stop6h 40mUnited Airlines
Fri 8/226:46 pmACK - IAD
1 stop4h 13mUnited Airlines
Deal found 8/6$221
This Delta deal was found by Cheapflights users on 8/5. 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 8/56:00 amIAD - ACK
2 stops8h 42mDelta
Thu 8/143:26 pmACK - IAD
1 stop4h 17mDelta
Deal found 8/5$232
This Delta deal was found by Cheapflights users on 8/4. 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 8/266:00 amIAD - ACK
2 stops10h 09mDelta
Fri 8/293:26 pmACK - IAD
1 stop4h 17mDelta
Deal found 8/4$237
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Sat 8/236:34 amIAD - MVY
1 stop4h 33mAmerican Airlines
Wed 8/272:03 pmMVY - IAD
2 stops8h 53mAmerican Airlines
Deal found 8/5$252
This Delta deal was found by Cheapflights users on 8/3. 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 8/126:00 amIAD - ACK
2 stops8h 46mDelta
Thu 8/143:26 pmACK - IAD
1 stop4h 17mDelta
Deal found 8/3$252
This Delta deal was found by Cheapflights users on 8/3. 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.
Sat 8/308:23 pmIAD - MVY
1 stop17h 10mDelta
Wed 9/32:13 pmMVY - IAD
1 stop5h 30mDelta
Deal found 8/3$256
This Delta deal was found by Cheapflights users on 8/4. 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.
Mon 8/258:23 pmIAD - ACK
1 stop18h 23mDelta
Thu 8/283:26 pmACK - IAD
1 stop4h 17mDelta
Deal found 8/4$256
This Delta deal was found by Cheapflights users on 8/4. 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.
Mon 8/258:23 pmIAD - ACK
1 stop18h 23mDelta
Fri 8/293:26 pmACK - IAD
1 stop4h 17mDelta
Deal found 8/4$261
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Mon 9/156:20 amIAD - ACK
1 stop3h 35mUnited Airlines
Tue 9/164:31 pmACK - IAD
1 stop4h 10mUnited Airlines
Deal found 8/5$266
This Delta deal was found by Cheapflights users on 8/3. 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.
Mon 8/188:23 pmIAD - ACK
1 stop18h 23mDelta
Fri 8/223:26 pmACK - IAD
1 stop4h 17mDelta
Deal found 8/3$270
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Sat 8/236:34 amIAD - MVY
1 stop4h 33mAmerican Airlines
Tue 8/262:03 pmMVY - IAD
2 stops8h 53mAmerican Airlines
Deal found 8/5$272

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Cape Cod and the Islands 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 August 6, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands that are best for you.

Fly from

Dulles Intl

Fly to

Cape Cod and the Islands

Route

Depart

Return

Price

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Tue 8/19

6:00 am-4:09 pm

2 stops10h 09m

Nantucket Memorial

Fri 8/22

3:26 pm-7:43 pm

1 stop4h 17m

$212

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Tue 8/19

8:40 am-3:20 pm

1 stop6h 40m

Nantucket Memorial

Fri 8/22

6:46 pm-10:59 pm

1 stop4h 13m

$221

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Wed 8/20

8:40 am-2:50 pm

1 stop6h 10m

Nantucket Memorial

Fri 8/22

6:46 pm-10:59 pm

1 stop4h 13m

$232

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Tue 8/26

6:00 am-4:09 pm

2 stops10h 09m

Nantucket Memorial

Fri 8/29

3:26 pm-7:43 pm

1 stop4h 17m

$237

Washington, D.C.West Tisbury

IAD - MVY

IADMVY

Washington, D.C. Dulles Intl

Sat 8/23

6:34 am-11:07 am

1 stop4h 33m

West Tisbury Martha's Vineyard

Wed 8/27

2:03 pm-10:56 pm

2 stops8h 53m

$252

Washington, D.C.West Tisbury

IAD - MVY

IADMVY

Washington, D.C. Dulles Intl

Sat 8/30

8:23 pm-1:33 pm

1 stop17h 10m

West Tisbury Martha's Vineyard

Wed 9/3

2:13 pm-7:43 pm

1 stop5h 30m

$256

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Mon 8/25

8:23 pm-2:46 pm

1 stop18h 23m

Nantucket Memorial

Thu 8/28

3:26 pm-7:43 pm

1 stop4h 17m

$256

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Mon 8/25

8:23 pm-2:46 pm

1 stop18h 23m

Nantucket Memorial

Wed 8/27

3:26 pm-7:43 pm

1 stop4h 17m

$261

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Mon 9/15

6:20 am-9:55 am

1 stop3h 35m

Nantucket Memorial

Tue 9/16

4:31 pm-8:41 pm

1 stop4h 10m

$266

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Mon 8/18

8:23 pm-2:46 pm

1 stop18h 23m

Nantucket Memorial

Fri 8/22

3:26 pm-7:43 pm

1 stop4h 17m

$270

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

Showing 1-10 of 53 results
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Best time to book a flight from Dulles Intl to Cape Cod and the Islands

Have a flexible travel schedule? Discover the best time to fly to Cape Cod and the Islands from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Cape Cod and the Islands

Get insights into the airlines that provide service to Cape Cod and the Islands. 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 Cape Cod and the Islands. Reviews last updated August 6, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,985 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,917 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Cape Cod and the Islands. 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 Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $108. Users have also found prices from $129 and $133 on Delta and American Airlines, respectively.

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

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

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

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

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

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

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

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

See more FAQs

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Alternative routes for Dulles Intl to Cape Cod and the Islands

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