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Dulles Intl

$566+ Cheap flights from Nantucket (ACK) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
ACK — IAD
Feb 15 — Feb 221
Sun 2/15
Sun 2/22
1 adult, Economy
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Cheap flight deals from Nantucket to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Nantucket (ACK) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$566
(United Airlines)

Popular in

November

Cheapest in

January

Average price

$178
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 Nantucket Memorial to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 11% potential increase in price ($28 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 January 2026
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Find flight deals from Nantucket to Dulles Intl

Cheapest flights from Nantucket to Dulles Intl
Explore the most affordable flight options available from Nantucket to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2026.

This United Airlines deal was found by Cheapflights users on 1/13. 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 7/144:15 pm
ACK
-
IAD
1 stop6h 45m
United Airlines
Wed 7/156:00 am
IAD
-
ACK
1 stop3h 56m
United Airlines
Deal found 1/13$566

Cheapflights Fare Finder

 
Customize your flight search to find flights from Nantucket 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 January 16, 2026.
Use the filters below to find and compare flights from Nantucket to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Nantucket

Fly to

Dulles Intl

Route

Depart

Return

Price

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Tue 7/14

4:15 pm-11:00 pm

1 stop6h 45m

Washington, D.C. Dulles Intl

Wed 7/15

6:00 am-9:56 am

1 stop3h 56m

$566

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Best time to book a flight from Nantucket to Dulles Intl

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

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

Currently, May is the cheapest month in which you can book a flight from Nantucket to Washington, D.C. Dulles Intl Airport (average of $132). Flying from Nantucket to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $193). 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.

Related info for your journey

Find useful and relevant information for your journey from Nantucket 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 airport do you fly from for flights from Nantucket to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Nantucket, you will be flying from Memorial, which is the city’s only airport. Nantucket Memorial (ACK) is located 2.8 mi from the center of Nantucket. There are 0 flights from Memorial to Washington, D.C. Dulles Intl per day from 0 different airlines.

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

    Airlines like United Airlines fly from Nantucket to Washington, D.C. Dulles Intl Airport in about 6h 45m. The time it takes to get you to your destination can typically vary by up to . Nantucket and Washington, D.C. Dulles Intl Airport are separated by a distance of 421 mi.

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

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

  • How can I find direct flights from Nantucket to Dulles Intl?

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

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

    Yes. Cheapflights offers flight deals from Nantucket 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 Nantucket to Washington, D.C. Dulles Intl Airport?

    Currently, May is the cheapest month in which you can book a flight from Nantucket to Washington, D.C. Dulles Intl Airport (average of $132). Flying from Nantucket to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $193). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Hanover
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Largo
Bowie
McLean
Clinton
Herndon

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