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

United Airlines can get you from Hong Kong to Washington, D.C. Dulles Intl Airport in just under 20h 26m. Your travel time can differ by up to . Hong Kong and Washington, D.C. Dulles Intl Airport are separated by a distance of 13092 km.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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

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

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

Yes. In addition to deals on Hong Kong to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Hong Kong to Dulles Intl?

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

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

Yes. Cheapflights offers flight deals from Hong Kong 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.

HK$3,798+ Cheap Flights from Hong Kong to Washington, D.C. Dulles Intl Airport

Cheap flight deals from Hong Kong to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Hong Kong to Dulles Intl
Explore the most affordable flight options available from Hong Kong to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Thu 12-1110:35 -

1 stop23h 16m

Mon 16-1112:40 -

2 stops29h 20m

Deal found 29-9HK$5,406

Wed 28-1010:35 -

2 stops22h 37m

Wed 4-1114:38 -

2 stops27h 07m

Deal found 30-9HK$6,112

Sat 14-1122:30 -

1 stop20h 05m

Sat 21-1122:10 -

2 stops32h 05m

Deal found 30-9HK$6,214

Wed 23-1210:35 -

1 stop27h 24m

Tue 29-1222:12 -

2 stops32h 08m

Deal found 27-9HK$6,489

Tue 20-1010:30 -

1 stop21h 00m

Tue 10-1122:00 -

1 stop26h 05m

Deal found 26-9HK$7,273

Thu 29-1010:35 -

2 stops30h 44m

Sun 29-1112:20 -

1 stop28h 25m

Deal found 28-9HK$7,344

Mon 19-1020:15 -

1 stop35h 15m

Fri 13-1122:00 -

1 stop25h 00m

Deal found 26-9HK$7,485

Tue 13-1014:45 -

1 stop31h 20m

Mon 26-1008:37 -

2 stops26h 13m

Deal found 30-9HK$7,493

Tue 13-1013:35 -

1 stop33h 15m

Mon 15-300:35 -

1 stop23h 20m

Deal found 26-9HK$7,689

Fri 13-1108:30 -

1 stop23h 00m

Fri 20-1122:00 -

1 stop25h 00m

Deal found 29-9HK$7,713

Find flight deals from Hong Kong to Dulles Intl

Round-trip from	HK$5,406
One-way from	HK$3,798
Popular in	July
Cheapest in	August
Average price	HK$8,811

United Airlines
28-10-4-11
3 total stops
49h 38m total
Hong Kong to Washington, D.C.

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AIR PREMIA
9-11-31-12
1 total stop
19h 55m total
Hong Kong to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (HK$1,487 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (HK$1,659 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Departure

Return

Price

Cheapest return flight

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Sun 6-12

13:45-05:35

2 stops28h 50m

Washington, D.C. Dulles Intl

Wed 31-12

00:00-13:00

Nonstop0h 00m

HK$4,331

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Sun 25-10

22:55-06:20

3 stops43h 25m

Washington, D.C. Dulles Intl

Wed 31-12

00:00-13:00

Nonstop0h 00m

HK$4,716

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Mon 12-10

19:40-15:55

1 stop32h 15m

Washington, D.C. Dulles Intl

Wed 31-12

00:00-13:00

Nonstop0h 00m

HK$4,998

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Mon 15-2

10:00-16:26

2 stops43h 26m

Washington, D.C. Dulles Intl

Wed 31-12

00:00-13:00

Nonstop0h 00m

HK$5,076

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Sun 15-11

17:35-05:44

2 stops25h 09m

Washington, D.C. Dulles Intl

Wed 31-12

00:00-13:00

Nonstop0h 00m

HK$5,139

Fastest return journey

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Tue 16-2

20:05-05:31

2 stops22h 26m

Washington, D.C. Dulles Intl

Wed 31-12

00:00-13:00

Nonstop0h 00m

HK$5,139

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Tue 27-10

10:35-19:01

1 stop20h 26m

Washington, D.C. Dulles Intl

Tue 27-10

22:10-19:20

2 stops33h 10m

HK$5,414

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Thu 12-11

10:35-20:51

1 stop23h 16m

Washington, D.C. Dulles Intl

Mon 16-11

12:40-07:00

2 stops29h 20m

HK$5,414

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Thu 29-10

10:35-23:15

2 stops24h 40m

Washington, D.C. Dulles Intl

Thu 5-11

18:20-06:45

1 stop23h 25m

HK$5,414

Hong KongWashington, D.C.

HKG Hong Kong Intl - IAD Washington, D.C. Dulles Intl

HKGIAD

Hong Kong Intl

Wed 28-10

10:35-21:12

2 stops22h 37m

Washington, D.C. Dulles Intl

Wed 4-11

14:38-06:45

2 stops27h 07m

HK$6,112

Flights are sorted by cheapest return flights first.

Deals found on 25-9

Showing 1-10 of 16 resultsSorted by cheapest first

Best time to book a flight from Hong Kong to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Hong Kong with our price prediction graph.

HKG-IAD

Estimated return 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 Hong Kong to Washington, D.C. Dulles Intl Airport

HK0-IAD

HKG-IAD

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

Currently, August is the cheapest month in which you can book a flight from Hong Kong to Washington, D.C. Dulles Intl Airport (average of HK$5,641). Flying from Hong Kong to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of HK$11,063). 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

How long is the flight from Hong Kong to Washington, D.C. Dulles Intl Airport?
United Airlines can get you from Hong Kong to Washington, D.C. Dulles Intl Airport in just under 20h 26m. Your travel time can differ by up to . Hong Kong and Washington, D.C. Dulles Intl Airport are separated by a distance of 13092 km.
Can I find deals for flights from Hong Kong to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Hong Kong to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Hong Kong to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hong Kong to Dulles Intl.
Can I find deals for business class flights from Hong Kong to Dulles Intl?
Yes. Cheapflights offers flight deals from Hong Kong 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 Hong Kong to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Hong Kong to Washington, D.C. Dulles Intl Airport (average of HK$5,641). Flying from Hong Kong to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of HK$11,063). 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.

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Hong Kong to Dulles Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Hong Kong to Dulles Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Hong Kong.

Can Cheapflights find flights from Hong Kong to Dulles Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Hong Kong to Dulles Intl with no change fees.

Can Cheapflights notify me if prices for flights from Hong Kong to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Hong Kong today and book when prices fit your budget.

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Cheap flights from Hong Kong to Washington, D.C. Dulles Intl Airport from HK$3,798

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9-11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Hong Kong to Dulles Intl

Cheapest flights from Hong Kong to Dulles IntlExplore the most affordable flight options available from Hong Kong to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Explore the most affordable flight options available from Hong Kong to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Best flights from Hong Kong to Dulles IntlDiscover carefully curated flight deals from Hong Kong to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Discover carefully curated flight deals from Hong Kong to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Last-minute flights from Hong Kong to Dulles IntlDiscover last-minute flight deals from Hong Kong to Dulles Intl. Data last updated 30 September 2026 and is based on user searches.

Discover last-minute flight deals from Hong Kong to Dulles Intl. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Hong Kong to Dulles IntlSearch for one-way flight options from Hong Kong to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Search for one-way flight options from Hong Kong to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

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

Best time to book a flight from Hong Kong to Dulles Intl

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Cheapflights Insights

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

Related info for your journey

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

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

How can I find direct flights from Hong Kong to Dulles Intl?

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

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

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

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Find flights from Hong Kong to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

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Can Cheapflights notify me if prices for flights from Hong Kong to Dulles Intl become cheaper?

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Cheapest flights from Hong Kong to Dulles Intl
Explore the most affordable flight options available from Hong Kong to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Best flights from Hong Kong to Dulles Intl
Discover carefully curated flight deals from Hong Kong to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Last-minute flights from Hong Kong to Dulles Intl
Discover last-minute flight deals from Hong Kong to Dulles Intl. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Hong Kong to Dulles Intl
Search for one-way flight options from Hong Kong to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.