$85 Cheap Flights from Nantucket (ACK) to Washington (DCA)

View $85 flight on Fri, Jul 4, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Nantucket to Washington (ACK-DCA)

Prices were available within the past 7 days and start at $85 for one-way flights and $178 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Thu, Jun 26 - Fri, Jul 4
ACK
Nantucket
DCA
Washington
$178 Roundtrip, found 12 hours ago
$178
Roundtrip
found 12 hours ago
Select JetBlue Airways flight, departing Thu, Jun 26 from Nantucket to Washington, returning Fri, Jul 4, priced at $178 found 12 hours ago
JetBlue Airways
Fri, Aug 29 - Mon, Sep 1
ACK
Nantucket
DCA
Washington
$187 Roundtrip, just found
$187
Roundtrip
just found
Select JetBlue Airways flight, departing Fri, Aug 29 from Nantucket to Washington, returning Mon, Sep 1, priced at $187 just found
JetBlue Airways
Fri, Aug 29 - Mon, Sep 1
ACK
Nantucket
DCA
Washington
$197 Roundtrip, just found
$197
Roundtrip
just found
Select JetBlue Airways flight, departing Fri, Aug 29 from Nantucket to Washington, returning Mon, Sep 1, priced at $197 just found
American Airlines
Thu, Jul 10 - Sun, Jul 13
ACK
Nantucket
DCA
Washington
$204 Roundtrip, found 1 day ago
$204
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jul 10 from Nantucket to Washington, returning Sun, Jul 13, priced at $204 found 1 day ago
Delta
Thu, May 22 - Mon, May 26
ACK
Nantucket
DCA
Washington
$206 Roundtrip, found 20 hours ago
$206
Roundtrip
found 20 hours ago
Select Delta flight, departing Thu, May 22 from Nantucket to Washington, returning Mon, May 26, priced at $206 found 20 hours ago
JetBlue Airways
Mon, Jun 16 - Wed, Jun 18
ACK
Nantucket
DCA
Washington
$207 Roundtrip, found 5 hours ago
$207
Roundtrip
found 5 hours ago
Select JetBlue Airways flight, departing Mon, Jun 16 from Nantucket to Washington, returning Wed, Jun 18, priced at $207 found 5 hours ago
JetBlue Airways
Fri, Jul 11 - Tue, Jul 15
ACK
Nantucket
DCA
Washington
$208 Roundtrip, found 3 hours ago
$208
Roundtrip
found 3 hours ago
Select JetBlue Airways flight, departing Fri, Jul 11 from Nantucket to Washington, returning Tue, Jul 15, priced at $208 found 3 hours ago
American Airlines
Thu, Jul 10 - Sun, Jul 13
ACK
Nantucket
DCA
Washington
$214 Roundtrip, found 1 day ago
$214
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jul 10 from Nantucket to Washington, returning Sun, Jul 13, priced at $214 found 1 day ago
JetBlue Airways
Fri, Jul 11 - Tue, Jul 15
ACK
Nantucket
DCA
Washington
$218 Roundtrip, found 3 hours ago
$218
Roundtrip
found 3 hours ago
Select JetBlue Airways flight, departing Fri, Jul 11 from Nantucket to Washington, returning Tue, Jul 15, priced at $218 found 3 hours ago
United
Wed, Sep 10 - Sat, Sep 13
ACK
Nantucket
DCA
Washington
$571 Roundtrip, found 2 hours ago
$571
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Sep 10 from Nantucket to Washington, returning Sat, Sep 13, priced at $571 found 2 hours ago
Flights from Nantucket (ACK) to Washington (DCA)
Origin airport
Nantucket Memorial
Destination airport
Ronald Reagan Washington National
Airlines serving
American Airlines, Delta, JetBlue Airways, United
Roundtrip price
$178
Distance
404 mi

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 2025. You can also book with separate airlines for your outbound and return journeys, from $85 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.

Frequently asked questions

How much does a flight from Nantucket Memorial Airport (ACK) to Ronald Reagan Washington National Airport (DCA) cost?
Discover the latest flight deals from ACK to DCA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ACK to DCA?
The cheapest flights from ACK to DCA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ACK to DCA?
With prices as low as $85 for a one-way flight from ACK to DCA, JetBlue Airways is currently the cheapest airline for this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from ACK on July 2 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Nantucket Memorial Airport (ACK) to Ronald Reagan Washington National Airport (DCA)?
Nonstop flights from Nantucket Memorial Airport (ACK) to Ronald Reagan Washington National Airport (DCA) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and select either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from ACK to DCA?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change based on a range of factors, including the season and airline.*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 Ronald Reagan Washington National Airport (DCA)?
To touch down at Ronald Reagan Washington National Airport (DCA) on time, select a flight that takes off from Nantucket Memorial Airport (ACK) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Ronald Reagan Washington National Airport (DCA) last-minute?
Booking your ticket from ACK to DCA shortly before your trip is typically more expensive. However, if you’re flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an ACK to DCA flight and hotel package?
You can save money by securing an ACK to DCA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s easy to manage everything in one place. After choosing your preferred flights and accommodations, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Nantucket Memorial Airport (ACK) to Ronald Reagan Washington National Airport (DCA)?
If you booked your ACK to DCA flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

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*Available to One Key members.