$103 Cheap Flights from Nantucket (ACK) to Washington (IAD)

View $103 flight on Wed, Jun 3, 2026Opens in a new window

Popular airlines from Nantucket, MA (ACK-Nantucket Memorial) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Nantucket to Washington (ACK-IAD)

Prices were available within the past 7 days and start at $103 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Jun 3 - Sat, Jun 6
ACK
Nantucket
IAD
Washington
$244 Roundtrip, found 1 day ago
$244
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jun 3 from Nantucket to Washington, returning Sat, Jun 6, priced at $244 found 1 day ago
United
Thu, May 21 - Sun, May 24
ACK
Nantucket
IAD
Washington
$511 Roundtrip, found 1 day ago
$511
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 21 from Nantucket to Washington, returning Sun, May 24, priced at $511 found 1 day ago
United
Sat, Jun 6 - Tue, Jun 9
ACK
Nantucket
IAD
Washington
$540 Roundtrip, found 1 day ago
$540
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jun 6 from Nantucket to Washington, returning Tue, Jun 9, priced at $540 found 1 day ago
United
Thu, Jun 4 - Sun, Jun 7
ACK
Nantucket
IAD
Washington
$565 Roundtrip, found 1 day ago
$565
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jun 4 from Nantucket to Washington, returning Sun, Jun 7, priced at $565 found 1 day ago
Delta
Thu, Jun 4 - Sun, Jun 7
ACK
Nantucket
IAD
Washington
$608 Roundtrip, found 1 day ago
$608
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Jun 4 from Nantucket to Washington, returning Sun, Jun 7, priced at $608 found 1 day ago
United
Thu, May 21 - Sun, May 24
ACK
Nantucket
IAD
Washington
$626 Roundtrip, found 1 day ago
$626
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 21 from Nantucket to Washington, returning Sun, May 24, priced at $626 found 1 day ago
United
Thu, Jun 4 - Sun, Jun 7
ACK
Nantucket
IAD
Washington
$654 Roundtrip, found 1 day ago
$654
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jun 4 from Nantucket to Washington, returning Sun, Jun 7, priced at $654 found 1 day ago
Delta
Tue, May 26 - Wed, May 27
ACK
Nantucket
IAD
Washington
$658 Roundtrip, found 3 days ago
$658
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, May 26 from Nantucket to Washington, returning Wed, May 27, priced at $658 found 3 days ago
United
Sat, Jun 6 - Tue, Jun 9
ACK
Nantucket
IAD
Washington
$665 Roundtrip, found 1 day ago
$665
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jun 6 from Nantucket to Washington, returning Tue, Jun 9, priced at $665 found 1 day ago
Cape Air
Sat, Mar 14 - Thu, Mar 19
ACK
Nantucket
IAD
Washington
$730 Roundtrip, found 6 days ago
$730
Roundtrip
found 6 days ago
Select Cape Air flight, departing Sat, Mar 14 from Nantucket to Washington, returning Thu, Mar 19, priced at $730 found 6 days ago

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Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $662
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $662

Frequently asked questions

How much does a flight from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $103 or cheap return flight from $244 from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD)?
June is the cheapest month to fly from ACK to IAD. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from ACK to IAD. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD)?
Nonstop flights from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ACK to IAD?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD)?
Choose a flight from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute fares from ACK to IAD are typically more expensive. To secure the best rates, start searching for flights ahead of time. That being said, if you're flexible with your travel plans, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book an ACK to IAD flight and hotel package?
You can save money by securing an ACK to IAD flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've chosen your preferred flights and accommodations, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Nantucket Memorial Airport (ACK) to Washington Dulles Intl. Airport (IAD)?
Typically, it's possible to cancel or reschedule your ACK to IAD flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Nantucket Memorial
Destination airport
Washington Dulles Intl.
Airlines serving
Delta, United
Roundtrip price
$244
Distance
421 mi

Book with confidence

Nantucket to Washington Flights

The cheapest times to fly from Nantucket to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Nantucket to Washington are during the month of June. You can find some of the cheapest flights from Nantucket to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Nantucket to Washington

Sunday is one of the best days to book for cheap flights from Nantucket to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Nantucket to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Nantucket to Washington in 2026. You can also book with separate airlines for your outbound and return journeys, from $103 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Nantucket to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Nantucket to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Nantucket to Washington Flights

*Flight schedules are subject to change.

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