In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What is the cheapest time of day to fly from HYA to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Hyannis to Washington, D.C. Dulles Intl Airport as you normally would.

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.

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.

$445+ Cheap Flights from Hyannis to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Hyannis to Dulles Intl

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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 September 14, 2026.

Wed 12/21:20 pm -

1 stop21h 55m

Sat 12/512:50 pm -

1 stop26h 10m

Deal found 9/13

$824

Sat 9/262:10 pm -

1 stop6h 48m

Wed 9/308:50 am -

1 stop8h 22m

Deal found 9/10

$946

Mon 9/2111:12 am -

1 stop20h 08m

Mon 9/288:50 am -

1 stop4h 00m

Deal found 9/13

$976

Find flight deals from Hyannis to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$824 (United)
One-way from	$445 (United)
Popular in	June
Cheapest in	December
Average price	$229

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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. 12% potential increase in price ($37 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in September 2026

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Use the filters below to find and compare flights from Hyannis to Washington, D.C. Dulles Intl Airport that are best for you.

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Cheapest round-trip

HyannisWashington, D.C.

HYA Hyannis Barnstable - IAD Washington, D.C. Dulles Intl

HYAIAD

Hyannis Barnstable

Sat 9/19

2:10 pm-7:20 am

1 stop17h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$445

HyannisWashington, D.C.

HYA Hyannis Barnstable - IAD Washington, D.C. Dulles Intl

HYAIAD

Hyannis Barnstable

Sun 10/4

7:00 am-12:10 am

3 stops17h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$644

HyannisWashington, D.C.

HYA Hyannis Barnstable - IAD Washington, D.C. Dulles Intl

HYAIAD

Hyannis Barnstable

Wed 12/2

6:00 am-4:23 pm

2 stops10h 23m

Washington, D.C. Dulles Intl

Sat 12/5

6:05 am-3:00 pm

2 stops8h 55m

$919

Quickest round-trip

HyannisWashington, D.C.

HYA Hyannis Barnstable - IAD Washington, D.C. Dulles Intl

HYAIAD

Hyannis Barnstable

Sat 9/26

2:10 pm-8:58 pm

1 stop6h 48m

Washington, D.C. Dulles Intl

Wed 9/30

8:50 am-5:12 pm

1 stop8h 22m

$946

HyannisWashington, D.C.

HYA Hyannis Barnstable - IAD Washington, D.C. Dulles Intl

HYAIAD

Hyannis Barnstable

Mon 10/5

2:10 pm-3:40 pm

2 stops49h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$1,833

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Sorted by cheapest first

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.

HYA-IAD

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.

Related info for your journey

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.
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.

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$445+ Cheap flights from Hyannis (HYA) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Hyannis to Dulles Intl

Cheapest flights from Hyannis to Dulles IntlExplore 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 September 14, 2026.

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 September 14, 2026.

Best flights from Hyannis to Dulles IntlDiscover carefully curated flight deals from Hyannis to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.

Discover carefully curated flight deals from Hyannis to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.

Last-minute flights from Hyannis to Dulles IntlDiscover last-minute flight deals from Hyannis to Dulles Intl. Data last updated September 14, 2026 and is based on user searches.

Discover last-minute flight deals from Hyannis to Dulles Intl. Data last updated September 14, 2026 and is based on user searches.

One-way flights from Hyannis to Dulles IntlSearch for one-way flight options from Hyannis to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.

Search for one-way flight options from Hyannis to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.

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Best time to book a flight from Hyannis to Dulles Intl

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Related info for your journey

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

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

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

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

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

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Hyannis and Dulles Intl flights

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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 September 14, 2026.

Best flights from Hyannis to Dulles Intl
Discover carefully curated flight deals from Hyannis to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.

Last-minute flights from Hyannis to Dulles Intl
Discover last-minute flight deals from Hyannis to Dulles Intl. Data last updated September 14, 2026 and is based on user searches.

One-way flights from Hyannis to Dulles Intl
Search for one-way flight options from Hyannis to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.