HK$4,768+ 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 27-8. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
31 Aug — 7 Sep1
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 1 August 2026.

Mon 2-1110:35
HKG
-
IAD
2 stops26h 55m
United Airlines
Fri 6-1114:38
IAD
-
HKG
1 stop27h 07m
United Airlines
Deal found 28-7HK$5,732
Thu 5-1111:25
HKG
-
IAD
2 stops26h 05m
United Airlines
Mon 9-1117:38
IAD
-
HKG
1 stop24h 07m
United Airlines
Deal found 30-7HK$5,850
Thu 10-911:45
HKG
-
IAD
2 stops24h 59m
United Airlines
Thu 17-918:35
IAD
-
HKG
1 stop22h 25m
United Airlines
Deal found 30-7HK$5,857
Mon 16-1111:25
HKG
-
IAD
2 stops26h 05m
United Airlines
Mon 10-522:10
IAD
-
HKG
1 stop32h 20m
United Airlines
Deal found 28-7HK$6,038
Sat 5-922:30
HKG
-
IAD
2 stops27h 25m
United Airlines
Sun 18-1007:00
IAD
-
HKG
1 stop23h 30m
United Airlines
Deal found 28-7HK$6,140
Sat 19-922:30
HKG
-
IAD
2 stops25h 19m
United Airlines
Sat 26-908:30
IAD
-
HKG
1 stop22h 25m
United Airlines
Deal found 31-7HK$6,163
Thu 3-922:30
HKG
-
IAD
2 stops25h 22m
United Airlines
Wed 16-907:00
IAD
-
HKG
1 stop23h 30m
United Airlines
Deal found 30-7HK$6,179
Thu 3-922:30
HKG
-
IAD
2 stops22h 53m
Lufthansa
Wed 16-908:30
IAD
-
HKG
1 stop22h 25m
Lufthansa
Deal found 30-7HK$6,351
Fri 11-910:30
HKG
-
IAD
1 stop21h 00m
Air China
Fri 18-923:00
IAD
-
HKG
1 stop26h 05m
Air China
Deal found 27-7HK$7,222

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 1 August 2026.

Return from

HK$5,732

One-way from

HK$4,768

Popular in

July

Cheapest in

October

Average price

HK$10,225
United Airlines
  • United Airlines
  • 2-11-6-11
  • 3 total stops
  • 54h 02m total
  • Hong Kong to Washington, D.C.
Search Deals
27-8
  • 27-8
  • 3 total stops
  • 47h 04m total
  • Hong Kong to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (HK$1,035 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$242 potential savings vs. average return price).
Search Deals
Average for return flights in August 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 1 August 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

Sat 19-9

22:30-11:49

2 stops25h 19m

Washington, D.C. Dulles Intl

Sat 26-9

08:30-18:55

1 stop22h 25m

HK$5,732

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Thu 5-11

11:25-00:30

2 stops26h 05m

Washington, D.C. Dulles Intl

Mon 9-11

17:38-06:45

1 stop24h 07m

HK$5,850

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 5-9

11:45-00:44

2 stops24h 59m

Washington, D.C. Dulles Intl

Sat 19-9

09:00-18:30

1 stop21h 30m

HK$6,038

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Thu 3-9

22:30-11:52

2 stops25h 22m

Washington, D.C. Dulles Intl

Wed 16-9

07:00-18:30

1 stop23h 30m

HK$6,179

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 5-9

22:30-13:55

2 stops27h 25m

Washington, D.C. Dulles Intl

Sun 18-10

07:00-18:30

1 stop23h 30m

HK$6,265

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Thu 3-9

12:20-23:59

2 stops23h 39m

Washington, D.C. Dulles Intl

Wed 16-9

12:26-05:05

2 stops28h 39m

HK$7,669

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 5-9

12:20-10:04

2 stops33h 44m

Washington, D.C. Dulles Intl

Sun 18-10

06:05-05:05

2 stops35h 00m

HK$7,669

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Thu 10-9

12:20-00:41

2 stops24h 21m

Washington, D.C. Dulles Intl

Thu 24-9

17:15-05:05

2 stops23h 50m

HK$7,669
Fastest return journey

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Fri 11-9

12:20-22:56

2 stops22h 36m

Washington, D.C. Dulles Intl

Fri 18-9

17:15-05:05

2 stops23h 50m

HK$7,669

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Fri 18-9

12:20-22:56

2 stops22h 36m

Washington, D.C. Dulles Intl

Sun 20-9

11:10-05:05

2 stops29h 55m

HK$7,669

Flights are sorted by cheapest return flights first.

Deals found on 28-7

Showing 1-10 of 22 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 23 hours 13 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$1,397, 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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