HK$4,118+ Cheap flights to Dulles Intl

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 31-10. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
1 Aug — 8 Aug1
1 adult
1 adult, Economy, 0 bags

Flights to Dulles Intl in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Dulles Intl Airport
Explore the most affordable flight options available to Dulles Intl Airport. Find the lowest fares based on data from user searches, with prices last updated on 2 July 2026.

Fri 16-1012:40
HKG
-
IAD
2 stops28h 37m
United Airlines
Sat 17-1008:30
IAD
-
HKG
1 stop22h 25m
United Airlines
Deal found 1-7HK$6,071
Sat 5-921:45
HKG
-
IAD
2 stops30h 01m
United Airlines
Sun 18-1017:45
IAD
-
HKG
1 stop23h 55m
United Airlines
Deal found 30-6HK$6,110
Wed 23-912:40
HKG
-
IAD
2 stops22h 39m
United Airlines
Sun 27-918:37
IAD
-
HKG
1 stop22h 23m
United Airlines
Deal found 29-6HK$6,510
Sat 12-1210:35
HKG
-
IAD
2 stops33h 10m
United Airlines
Wed 30-1208:25
IAD
-
HKG
2 stops33h 35m
United Airlines
Deal found 2-7HK$6,729
Fri 4-900:45
HKG
-
IAD
1 stop22h 20m
Korean Air
Sun 18-1013:15
IAD
-
HKG
1 stop33h 40m
Korean Air
Deal found 30-6HK$7,694
Tue 14-710:30
HKG
-
IAD
1 stop21h 00m
Air China
Tue 21-723:00
IAD
-
HKG
1 stop34h 45m
Air China
Deal found 28-6HK$7,796
Wed 2-912:20
HKG
-
IAD
2 stops23h 19m
Delta
Sun 18-1008:00
IAD
-
HKG
2 stops33h 05m
Delta
Deal found 30-6HK$7,827
Wed 2-911:45
HKG
-
IAD
2 stops24h 45m
United Airlines
Sun 18-1009:28
IAD
-
HKG
1 stop21h 02m
United Airlines
Deal found 30-6HK$7,843
Fri 4-900:45
HKG
-
IAD
2 stops35h 49m
Delta
Sun 18-1010:07
IAD
-
HKG
2 stops30h 58m
Delta
Deal found 30-6HK$8,220
Sun 18-1012:40
HKG
-
IAD
2 stops23h 50m
United Airlines
Fri 26-206:30
IAD
-
HKG
1 stop23h 50m
United Airlines
Deal found 29-6HK$8,243

Find flight deals to Dulles Intl Airport

Find the latest flights to Dulles Intl in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 2 July 2026.

Return from

HK$6,071

One-way from

HK$4,118

Popular in

November

Cheapest in

September

Average price

HK$11,443
United Airlines
  • United Airlines
  • 16-10-17-10
  • 3 total stops
  • 51h 02m total
  • Hong Kong to Washington, D.C.
Search Deals
Korean Air
  • Korean Air
  • 19-10
  • 1 total stop
  • 29h 10m total
  • Hong Kong to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price.
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$229 potential savings vs. average return price).
Search Deals
Average for return flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Dulles Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 2 July 2026.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Route

Departure

Return

Price

Cheapest return flight

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 11-10

11:45-21:05

1 stop21h 20m

Washington, D.C. Dulles Intl

Wed 14-10

14:43-05:40

2 stops26h 57m

HK$6,110

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 12-12

10:35-23:13

2 stops25h 38m

Washington, D.C. Dulles Intl

Wed 30-12

06:30-19:15

1 stop23h 45m

HK$6,110

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Wed 23-9

12:40-23:19

2 stops22h 39m

Washington, D.C. Dulles Intl

Sun 27-9

18:37-05:00

1 stop22h 23m

HK$6,110

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 5-9

00:45-23:59

2 stops35h 14m

Washington, D.C. Dulles Intl

Sun 18-10

10:07-05:05

2 stops30h 58m

HK$7,827

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Fri 9-10

22:30-05:55

1 stop43h 25m

Washington, D.C. Dulles Intl

Sun 11-10

16:15-05:00

1 stop24h 45m

HK$7,843

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Thu 3-9

12:40-00:32

2 stops23h 52m

Washington, D.C. Dulles Intl

Sun 18-10

09:45-18:55

1 stop21h 10m

HK$7,843

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Thu 15-10

12:20-22:39

2 stops22h 19m

Washington, D.C. Dulles Intl

Thu 22-10

08:00-05:05

2 stops33h 05m

HK$8,220
Fastest return journey

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Tue 22-9

00:45-11:05

1 stop22h 20m

Washington, D.C. Dulles Intl

Sun 27-9

13:15-22:45

1 stop21h 30m

HK$8,243

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 18-10

22:30-05:55

1 stop19h 25m

Washington, D.C. Dulles Intl

Sat 27-2

17:15-07:00

2 stops24h 45m

HK$8,243
Cheapest one-way

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 31-10

18:10-10:50

1 stop28h 40m

HK$4,118

Flights are sorted by cheapest return flights first.

Deals found on 30-6

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl with our price prediction graph.
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 to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

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

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Dulles Intl, 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).

How long is the flight to Dulles Intl?

On average, a flight from Hong Kong to Dulles Intl takes 21 hours 20 minutes. Flights to Dulles Intl from other popular cities in Hong Kong will vary in length. Below are a few examples of popular routes and their flight times.

FAQs about flying to Dulles Intl

  • Can I find cheaper flights to Dulles Intl if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Dulles Intl on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the cheapest airport to fly to in Dulles Intl?

    Washington, D.C. Dulles Intl is currently the cheapest airport to fly to in Dulles Intl. One-way flights to Washington, D.C. Dulles Intl typically cost HK$1,398, while return flights cost around HK$377.

  • How much is a return flight to Dulles Intl?

    A return flight to Dulles Intl will typically cost around HK$2,955, however they can be found for as little as HK$377.

  • Does Washington, D.C. Dulles Intl have rental cars?

    Yes. Those touching down at Washington, D.C. Dulles Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Washington, D.C. Dulles Intl?

    Yes. Washington, D.C. Dulles Intl has hotels nearby for those requiring accommodations. Sleepbox Lounge Iad, Dulles International Airport is the closest property to Washington, D.C. Dulles Intl (0.0 km away from Washington, D.C. Dulles Intl).

See more FAQs

Travelling 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
Fairfax
Arlington

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