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Cheap flights from Cape Cod and the Islands to Washington, D.C. from $293

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 9/29. 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

Multiple Airlines Logo
4:09 pm - 4:20 pmHYA-IAD
24h 11m1 stop
Multiple Airlines Logo
10:19 pm - 10:30 amIAD-HYA
12h 11m1 stop
$625Multiple Airlines
Find Deal
Tue, Oct 21 - Fri, Oct 24
Multiple Airlines Logo
7:58 am - 4:05 pmHYA-IAD
8h 07m2 stops
Multiple Airlines Logo
10:19 pm - 2:00 pmIAD-HYA
15h 41m1 stop
$626Multiple Airlines
Find Deal
Tue, Oct 21 - Fri, Oct 24
Multiple Airlines Logo
7:58 am - 4:05 pmHYA-IAD
8h 07m2 stops
Multiple Airlines Logo
6:15 am - 6:39 pmIAD-HYA
12h 24m2 stops
$631Multiple Airlines
Find Deal
Tue, Oct 21 - Fri, Oct 24
Multiple Airlines Logo
3:08 pm - 7:11 amMVY-IAD
16h 03m1 stop
Multiple Airlines Logo
8:50 am - 2:10 pmIAD-MVY
5h 20m1 stop
$1,024Multiple Airlines
Find Deal
Sat, Oct 11 - Mon, Oct 13
Multiple Airlines Logo
7:00 am - 11:14 amMVY-IAD
4h 14m1 stop
Multiple Airlines Logo
8:50 am - 10:20 pmIAD-MVY
13h 30m1 stop
$1,154Multiple Airlines
Find Deal
Fri, Oct 10 - Mon, Oct 13

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 September 22, 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

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Tue 10/21

4:09 pm-4:20 pm

1 stop24h 11m

Washington, D.C. Dulles Intl

Fri 10/24

10:19 pm-10:30 am

1 stop12h 11m

$625

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Tue 10/21

7:58 am-4:05 pm

2 stops8h 07m

Washington, D.C. Dulles Intl

Fri 10/24

10:19 pm-2:00 pm

1 stop15h 41m

$626

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Tue 10/21

7:58 am-4:05 pm

2 stops8h 07m

Washington, D.C. Dulles Intl

Fri 10/24

6:15 am-6:39 pm

2 stops12h 24m

$631

West TisburyWashington, D.C.

MVY - IAD

MVYIAD

West Tisbury Martha's Vineyard

Sat 10/11

3:08 pm-7:11 am

1 stop16h 03m

Washington, D.C. Dulles Intl

Mon 10/13

8:50 am-2:10 pm

1 stop5h 20m

$1,024

West TisburyWashington, D.C.

MVY - IAD

MVYIAD

West Tisbury Martha's Vineyard

Fri 10/10

7:00 am-11:14 am

1 stop4h 14m

Washington, D.C. Dulles Intl

Mon 10/13

8:50 am-10:20 pm

1 stop13h 30m

$1,154

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Mon 9/29

1:01 pm-11:14 am

1 stop22h 13m

$293

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Mon 9/29

6:48 am-7:55 pm

3 stops37h 07m

$326

West TisburyWashington, D.C.

MVY - IAD

MVYIAD

West Tisbury Martha's Vineyard

Tue 10/14

3:08 pm-7:11 am

1 stop16h 03m

$368

NantucketWashington, D.C.

ACK - IAD

ACKIAD

Nantucket Memorial

Mon 9/29

5:36 pm-11:14 am

2 stops17h 38m

$382

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Mon 9/29

1:01 pm-7:20 am

2 stops18h 19m

$447

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 $431. 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 $776.

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 $551 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 $657 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 $285 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 $227 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

Direct flights

None
There are no direct flights from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Cape Cod and the Islands to Washington, D.C. Dulles Intl Airport.
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  • 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
National Harbor
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg

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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