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Dulles Intl

$397+ Cheap flights from Hyannis (HYA) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/24. Fares are subject to change and may not be available on all flights or dates of travel.
HYA — IAD
Apr 21 — Apr 281
Tue 4/21
Tue 4/28
1 adult, Economy
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Cheap flight deals from Hyannis to Dulles Intl

Cheapest flights from Hyannis to Dulles Intl
Explore the most affordable flight options available from Hyannis to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 22, 2026.

This American Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2212:42 pm
HYA
-
IAD
3 stops11h 31m
American Airlines
Wed 6/248:22 pm
IAD
-
HYA
3 stops16h 32m
American Airlines
Deal found 3/20$1,238

Find flight deals from Hyannis to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Hyannis (HYA) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,238
(American Airlines)

One-way from

$397
(Kiwi.com)

Popular in

November

Cheapest in

September

Average price

$229
Provider with most accurate pricing for Hyannis Barnstable-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Hyannis Barnstable-Washington, D.C. Dulles Intl flights.
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From Hyannis Barnstable to Washington, D.C. Dulles Intl
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One-way flight from Hyannis Barnstable to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 5% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Hyannis to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated March 22, 2026.
Use the filters below to find and compare flights from Hyannis to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Mon 6/22

12:42 pm-12:13 am

3 stops11h 31m

Washington, D.C. Dulles Intl

Wed 6/24

8:22 pm-12:54 pm

3 stops16h 32m

$1,238
Cheapest one-way

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Sat 6/20

1:20 pm-4:20 pm

2 stops27h 00m

$574
Quickest one-way

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Sun 6/21

1:24 pm-12:13 am

2 stops10h 49m

$686

HyannisWashington, D.C.

HYA - IAD

HYAIAD

Hyannis Barnstable

Mon 6/15

1:20 pm-6:54 am

2 stops17h 34m

$716

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Hyannis-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Hyannis-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Hyannis-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Hyannis-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Hyannis-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Hyannis to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Hyannis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Hyannis to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Hyannis to Washington, D.C. Dulles Intl Airport?

Currently, May is the cheapest month in which you can book a flight from Hyannis to Washington, D.C. Dulles Intl Airport (average of $135). Flying from Hyannis to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $193). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Hyannis to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Hyannis to Washington, D.C. Dulles Intl?

    Hyannis Barnstable (HYA), located 1.0 mi from the city center, is the airport you fly out of when you book flights from Hyannis to Washington, D.C. Dulles Intl. 0 airlines have flights from Barnstable to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Hyannis Barnstable to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

  • How long is the flight from Hyannis to Washington, D.C. Dulles Intl Airport?

    For as low as $1,238, American Airlines can have you in Washington, D.C. Dulles Intl Airport from Hyannis in 11h 31m. The distance between Hyannis and Washington, D.C. Dulles Intl Airport is about 421 mi.

  • Can I find deals for flights from Hyannis to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Hyannis to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Hyannis to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hyannis to Dulles Intl.

  • Can I find deals for business class flights from Hyannis to Dulles Intl?

    Yes. Cheapflights offers flight deals from Hyannis to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Hyannis to Washington, D.C. Dulles Intl Airport?

    Currently, May is the cheapest month in which you can book a flight from Hyannis to Washington, D.C. Dulles Intl Airport (average of $135). Flying from Hyannis to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $193). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
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Silver Spring
Herndon
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Hanover
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Upper Marlboro
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Bowie
Clinton
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Cordova

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