Cheap flights from Cape Cod and the Islands to Washington, D.C. from $94

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cape Cod and the Islands to Washington, D.C. departing on 8/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Cape Cod and the Islands to Washington, D.C.

Cheap round-trip flights

Delta Logo
3:26 pm - 7:43 pmACK-IAD
4h 17m1 stop
Delta Logo
8:23 pm - 2:46 pmIAD-ACK
18h 23m1 stop
$235Delta
Find Deal
Fri, Aug 22 - Tue, Aug 26
Delta Logo
3:26 pm - 7:43 pmACK-IAD
4h 17m1 stop
Delta Logo
6:00 am - 4:09 pmIAD-ACK
10h 09m2 stops
$237Delta
Find Deal
Fri, Aug 22 - Tue, Aug 26
Delta Logo
3:26 pm - 7:43 pmACK-IAD
4h 17m1 stop
Delta Logo
6:00 am - 2:46 pmIAD-ACK
8h 46m2 stops
$278Delta
Find Deal
Thu, Sep 4 - Sun, Sep 7
Delta Logo
3:26 pm - 12:02 pmACK-IAD
20h 36m1 stop
Delta Logo
6:00 am - 4:09 pmIAD-ACK
10h 09m2 stops
$285Delta
Find Deal
Fri, Aug 22 - Tue, Aug 26
United Airlines Logo
4:16 pm - 8:41 pmACK-IAD
4h 25m1 stop
United Airlines Logo
6:20 am - 9:55 amIAD-ACK
3h 35m1 stop
$348United Airlines
Find Deal
Thu, Sep 4 - Sun, Sep 7
United Airlines Logo
6:46 pm - 10:59 pmACK-IAD
4h 13m1 stop
United Airlines Logo
8:40 am - 3:20 pmIAD-ACK
6h 40m1 stop
$412United Airlines
Find Deal
Fri, Aug 22 - Tue, Aug 26
American Airlines Logo
1:41 pm - 10:56 pmACK-IAD
9h 15m2 stops
American Airlines Logo
6:34 am - 1:11 pmIAD-ACK
6h 37m2 stops
$493American Airlines
Find Deal
Wed, Aug 13 - Thu, Aug 14
American Airlines Logo
1:41 pm - 10:56 pmACK-IAD
9h 15m2 stops
American Airlines Logo
6:34 am - 1:11 pmIAD-ACK
6h 37m2 stops
$542American Airlines
Find Deal
Wed, Aug 13 - Thu, Aug 14
 Logo
10:29 am - 10:44 pmHYA-IAD
12h 15m2 stops
 Logo
3:55 pm - 8:27 pmIAD-HYA
4h 32m1 stop
Sat, Aug 30 - Sun, Aug 31
 Logo
10:29 am - 2:43 pmHYA-IAD
4h 14m1 stop
 Logo
3:55 pm - 8:27 pmIAD-HYA
4h 32m1 stop
Sat, Aug 30 - Sun, Aug 31

Delta flights from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Aug 22
ACK3:26 pmNantucket Memorial
4h 17m
1 stop
IAD7:43 pmWashington, D.C. Dulles Intl
Aug 26
IAD8:23 pmWashington, D.C. Dulles Intl
18h 23m
1 stop
ACK2:46 pmNantucket Memorial
Delta
Aug 22
ACK3:26 pmNantucket Memorial
4h 17m
1 stop
IAD7:43 pmWashington, D.C. Dulles Intl
Aug 26
IAD6:00 amWashington, D.C. Dulles Intl
10h 09m
2 stops
ACK4:09 pmNantucket Memorial
Delta
Sep 4
ACK3:26 pmNantucket Memorial
4h 17m
1 stop
IAD7:43 pmWashington, D.C. Dulles Intl
Sep 7
IAD6:00 amWashington, D.C. Dulles Intl
8h 46m
2 stops
ACK2:46 pmNantucket Memorial

American Airlines flights from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport

Our best American Airlines deals on Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Aug 13
ACK1:41 pmNantucket Memorial
9h 15m
2 stops
IAD10:56 pmWashington, D.C. Dulles Intl
Aug 14
IAD6:34 amWashington, D.C. Dulles Intl
6h 37m
2 stops
ACK1:11 pmNantucket Memorial
American Airlines
Aug 13
ACK1:41 pmNantucket Memorial
9h 15m
2 stops
IAD10:56 pmWashington, D.C. Dulles Intl
Aug 14
IAD6:34 amWashington, D.C. Dulles Intl
6h 37m
2 stops
ACK1:11 pmNantucket Memorial
American Airlines
Aug 22
MVY2:03 pmWest Tisbury Martha's Vineyard
8h 53m
2 stops
IAD10:56 pmWashington, D.C. Dulles Intl
Aug 25
IAD4:36 pmWashington, D.C. Dulles Intl
20h 57m
2 stops
MVY1:33 pmWest Tisbury Martha's Vineyard

momondo Fare Finder

 
Customize your flight search to find flights from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated July 31, 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

Fly to

Route

Depart

Return

Price

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Fri 8/22

3:26 pm-7:43 pm

1 stop4h 17m

Washington, D.C. Dulles Intl

Tue 8/26

8:23 pm-2:46 pm

1 stop18h 23m

$235

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Fri 8/22

3:26 pm-7:43 pm

1 stop4h 17m

Washington, D.C. Dulles Intl

Tue 8/26

6:00 am-4:09 pm

2 stops10h 09m

$237

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Thu 9/4

3:26 pm-7:43 pm

1 stop4h 17m

Washington, D.C. Dulles Intl

Sun 9/7

6:00 am-2:46 pm

2 stops8h 46m

$278

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Fri 8/22

3:26 pm-12:02 pm

1 stop20h 36m

Washington, D.C. Dulles Intl

Tue 8/26

6:00 am-4:09 pm

2 stops10h 09m

$285

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Thu 9/4

4:16 pm-8:41 pm

1 stop4h 25m

Washington, D.C. Dulles Intl

Sun 9/7

6:20 am-9:55 am

1 stop3h 35m

$348

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Fri 8/22

6:46 pm-10:59 pm

1 stop4h 13m

Washington, D.C. Dulles Intl

Tue 8/26

8:40 am-3:20 pm

1 stop6h 40m

$412

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Wed 8/13

1:41 pm-10:56 pm

2 stops9h 15m

Washington, D.C. Dulles Intl

Thu 8/14

6:34 am-1:11 pm

2 stops6h 37m

$493

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Wed 8/13

1:41 pm-10:56 pm

2 stops9h 15m

Washington, D.C. Dulles Intl

Thu 8/14

6:34 am-1:11 pm

2 stops6h 37m

$542

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Sat 8/30

10:29 am-10:44 pm

2 stops12h 15m

Washington, D.C. Dulles Intl

Sun 8/31

3:55 pm-8:27 pm

1 stop4h 32m

$626

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Sat 8/30

10:29 am-2:43 pm

1 stop4h 14m

Washington, D.C. Dulles Intl

Sun 8/31

3:55 pm-8:27 pm

1 stop4h 32m

$641

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, January is the cheapest month to fly from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $207. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $251.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $441. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport for around $760.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Cape Cod and the Islands in the evening is the least expensive time of day to depart. momondo users have found prices as low as $540 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $681 on average. Flights to Washington, D.C. Dulles Intl Airport from Cape Cod and the Islands at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Cape Cod and the Islands when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $279 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Cape Cod and the Islands for as low as $209 on momondo.

Can stopping save me money on Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport.

Cheap Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport

Best Price Found

$94

Fastest flight time

3h 58m

Direct flights

None
The best one-way flight to Washington, D.C. Dulles Intl Airport from Cape Cod and the Islands in the past 72 hours is $94. The best round-trip flight deal from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $235.
The fastest flight from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport takes 3h 58m
There are no direct flights from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport. Popular non-direct routes for this connection are Nantucket Memorial Airport - Washington, D.C. Dulles Intl Airport, Hyannis Barnstable Airport - Washington, D.C. Dulles Intl Airport and West Tisbury Martha's Vineyard Airport - Washington, D.C. Dulles Intl Airport.

  • When did momondo last update prices for flights from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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


Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Arlington
National Harbor
Winchester
Woodbridge
Laurel
Tysons
Silver Spring
Waldorf
Fredericksburg
Manassas
Harpers Ferry
Towson
Rockville
Colonial Beach
Gaithersburg
Fairfax
Reston
Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from Cape Cod and the Islands to Washington, D.C.?

Finding the right flight to Washington, D.C. from Cape Cod and the Islands is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

Can I find flights from Cape Cod and the Islands to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Cape Cod and the Islands to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from Cape Cod and the Islands to Washington, D.C.?

momondo helps you find the best flight between Cape Cod and the Islands and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Cape Cod and the Islands to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Cape Cod and the Islands to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.


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