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Cheap flights from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands from $188

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands 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 Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands

Cheap round-trip flights

Logo
8:40 am - 3:45 pmIAD-HYA
7h 05m2 stops
Logo
9:57 am - 4:23 pmHYA-IAD
6h 26m1 stop
$560
Find Deal
Sun, Sep 21 - Tue, Sep 23
Logo
12:35 pm - 7:02 pmIAD-HYA
6h 27m1 stop
Logo
9:57 am - 4:23 pmHYA-IAD
6h 26m1 stop
$630
Find Deal
Sun, Sep 21 - Tue, Sep 23
Logo
12:35 pm - 6:40 amIAD-MVY
18h 05m2 stops
Logo
8:25 am - 4:06 pmMVY-IAD
7h 41m2 stops
$687
Find Deal
Tue, Sep 23 - Thu, Sep 25
Logo
10:18 pm - 4:30 pmIAD-MVY
18h 12m2 stops
Logo
6:10 pm - 7:11 amMVY-IAD
13h 01m1 stop
$716
Find Deal
Tue, Sep 23 - Thu, Sep 25
Logo
5:16 pm - 8:05 amIAD-MVY
14h 49m1 stop
Logo
8:25 am - 4:06 pmMVY-IAD
7h 41m2 stops
$719
Find Deal
Tue, Sep 23 - Thu, Sep 25
Logo
10:19 pm - 7:45 amIAD-MVY
9h 26m1 stop
Logo
1:05 pm - 7:11 amMVY-IAD
18h 06m1 stop
$744
Find Deal
Fri, Oct 17 - Mon, Oct 20
Logo
10:18 pm - 10:41 amIAD-MVY
12h 23m1 stop
Logo
6:10 pm - 7:11 amMVY-IAD
13h 01m1 stop
$749
Find Deal
Tue, Sep 23 - Thu, Sep 25
Logo
6:20 am - 9:55 amIAD-ACK
3h 35m1 stop
Logo
6:50 am - 11:14 amACK-IAD
4h 24m1 stop
$762
Find Deal
Mon, Sep 22 - Thu, Sep 25
United Airlines Logo
8:35 am - 3:11 pmIAD-ACK
6h 36m1 stop
United Airlines Logo
10:30 am - 4:23 pmACK-IAD
5h 53m1 stop
$1,464United Airlines
Find Deal
Sat, Sep 20 - Wed, Sep 24
United Airlines Logo
6:20 am - 9:55 amIAD-ACK
3h 35m1 stop
United Airlines Logo
10:30 am - 4:23 pmACK-IAD
5h 53m1 stop
$5,532United Airlines
Find Deal
Thu, Sep 18 - Sun, Sep 21

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

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands flight tickets
United Airlines
Sep 13
IAD8:35 amWashington, D.C. Dulles Intl
6h 36m
1 stop
ACK3:11 pmNantucket Memorial
Sep 16
ACK4:31 pmNantucket Memorial
6h 08m
1 stop
IAD10:39 pmWashington, D.C. Dulles Intl
$518
Find similar
United Airlines
Sep 13
IAD8:35 amWashington, D.C. Dulles Intl
6h 36m
1 stop
ACK3:11 pmNantucket Memorial
Sep 16
ACK4:31 pmNantucket Memorial
6h 08m
1 stop
IAD10:39 pmWashington, D.C. Dulles Intl
$578
Find similar
United Airlines
Sep 14
IAD6:20 amWashington, D.C. Dulles Intl
3h 35m
1 stop
ACK9:55 amNantucket Memorial
Sep 15
ACK4:31 pmNantucket Memorial
22h 12m
2 stops
IAD2:43 pmWashington, D.C. Dulles Intl
$846
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands 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 7, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Hyannis

IAD - HYA

IADHYA

Washington, D.C. Dulles Intl

Sun 9/21

8:40 am-3:45 pm

2 stops7h 05m

Hyannis Barnstable

Tue 9/23

9:57 am-4:23 pm

1 stop6h 26m

$560

Washington, D.C.Hyannis

IAD - HYA

IADHYA

Washington, D.C. Dulles Intl

Sun 9/21

12:35 pm-7:02 pm

1 stop6h 27m

Hyannis Barnstable

Tue 9/23

9:57 am-4:23 pm

1 stop6h 26m

$630

Washington, D.C.West Tisbury

IAD - MVY

IADMVY

Washington, D.C. Dulles Intl

Tue 9/23

12:35 pm-6:40 am

2 stops18h 05m

West Tisbury Martha's Vineyard

Thu 9/25

8:25 am-4:06 pm

2 stops7h 41m

$687

Washington, D.C.West Tisbury

IAD - MVY

IADMVY

Washington, D.C. Dulles Intl

Tue 9/23

10:18 pm-4:30 pm

2 stops18h 12m

West Tisbury Martha's Vineyard

Thu 9/25

6:10 pm-7:11 am

1 stop13h 01m

$716

Washington, D.C.West Tisbury

IAD - MVY

IADMVY

Washington, D.C. Dulles Intl

Tue 9/23

5:16 pm-8:05 am

1 stop14h 49m

West Tisbury Martha's Vineyard

Thu 9/25

8:25 am-4:06 pm

2 stops7h 41m

$719

Washington, D.C.West Tisbury

IAD - MVY

IADMVY

Washington, D.C. Dulles Intl

Fri 10/17

10:19 pm-7:45 am

1 stop9h 26m

West Tisbury Martha's Vineyard

Mon 10/20

1:05 pm-7:11 am

1 stop18h 06m

$744

Washington, D.C.West Tisbury

IAD - MVY

IADMVY

Washington, D.C. Dulles Intl

Tue 9/23

10:18 pm-10:41 am

1 stop12h 23m

West Tisbury Martha's Vineyard

Thu 9/25

6:10 pm-7:11 am

1 stop13h 01m

$749

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Mon 9/22

6:20 am-9:55 am

1 stop3h 35m

Nantucket Memorial

Thu 9/25

6:50 am-11:14 am

1 stop4h 24m

$762

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Sat 9/20

8:35 am-3:11 pm

1 stop6h 36m

Nantucket Memorial

Wed 9/24

10:30 am-4:23 pm

1 stop5h 53m

$1,464

Washington, D.C.Nantucket

IAD - ACK

IADACK

Washington, D.C. Dulles Intl

Thu 9/18

6:20 am-9:55 am

1 stop3h 35m

Nantucket Memorial

Sun 9/21

10:30 am-4:23 pm

1 stop5h 53m

$5,532

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Cape Cod and the Islands from

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

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 Cape Cod and the Islands?

In general, January is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $217. If you are unable to visit Cape Cod and the Islands during the month of January, then departing from Washington, D.C. Dulles Intl Airport during the month March is also very affordable. Most momondo users find prices during this month for around $241.

What is the cheapest day to depart on your flight to Cape Cod and the Islands?

Our data shows that Wednesday is the least expensive day to fly to Cape Cod and the Islands. Tickets to fly out on this day can be as low as $274. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $328. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cape Cod and the Islands.

What is the cheapest time of day to depart on your flight to Cape Cod and the Islands?

The cheapest time of day to fly to Cape Cod and the Islands is in the evening when flights can be purchased for as low as $246. Flights to Cape Cod and the Islands are more costly in the afternoon, with an average ticket price of $347. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Cape Cod and the Islands?

You are more likely to see cheaper flights to Cape Cod and the Islands from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Cape Cod and the Islands for around $287 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cape Cod and the Islands from Washington, D.C. Dulles Intl Airport for as low as $185 on momondo.

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

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

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

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

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands.
Search flight deals

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

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

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

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

  • What documentation or ID do you need to fly to Cape Cod and the Islands?

    The travel and health documents required for your trip to Cape Cod and the Islands 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 Cape Cod and the Islands. 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 Washington, D.C. Dulles Intl Airport to Cape Cod and the Islands?

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Cape Cod and the Islands. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Washington, D.C. to Cape Cod and the Islands on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Washington, D.C. and Cape Cod and the Islands 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 Washington, D.C. to Cape Cod and the Islands right now. Can momondo alert me if prices change?

Price alerts on flights to Cape Cod and the Islands from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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