HK$3,759+ 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 12-6. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
20 Apr — 27 Apr1
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 21 March 2026.

Fri 1-522:30
HKG
-
IAD
2 stops25h 18m
United Airlines
Fri 8-522:10
IAD
-
HKG
1 stop32h 45m
United Airlines
Deal found 17-3HK$6,783
Sat 27-611:05
HKG
-
IAD
1 stop23h 25m
EVA Air
Sat 4-701:50
IAD
-
HKG
1 stop22h 15m
EVA Air
Deal found 16-3HK$7,440
Wed 30-920:10
HKG
-
IAD
2 stops47h 18m
星宇航空
Wed 21-1017:38
IAD
-
HKG
2 stops28h 17m
星宇航空
Deal found 19-3HK$7,480
Thu 30-400:55
HKG
-
IAD
1 stop27h 10m
Qatar Airways
Fri 8-511:00
IAD
-
HKG
1 stop24h 20m
Qatar Airways
Deal found 18-3HK$7,621
Wed 22-411:45
HKG
-
IAD
2 stops35h 48m
United Airlines
Sun 26-422:05
IAD
-
HKG
1 stop32h 25m
United Airlines
Deal found 16-3HK$7,715
Tue 30-601:25
HKG
-
IAD
1 stop26h 15m
Qatar Airways
Fri 31-711:05
IAD
-
HKG
1 stop22h 50m
Qatar Airways
Deal found 20-3HK$7,809
Tue 9-622:30
HKG
-
IAD
2 stops24h 58m
United Airlines
Tue 7-720:18
IAD
-
HKG
1 stop21h 22m
United Airlines
Deal found 20-3HK$7,856
Tue 14-701:25
HKG
-
IAD
1 stop26h 15m
Qatar Airways
Tue 25-821:00
IAD
-
HKG
1 stop36h 55m
Qatar Airways
Deal found 18-3HK$7,934
Mon 4-500:55
HKG
-
IAD
1 stop27h 10m
Qatar Airways
Tue 26-511:00
IAD
-
HKG
1 stop24h 20m
Qatar Airways
Deal found 18-3HK$8,036
Fri 1-518:15
HKG
-
IAD
1 stop26h 25m
Qatar Airways
Fri 22-511:00
IAD
-
HKG
1 stop24h 20m
Qatar Airways
Deal found 18-3HK$8,044

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 21 March 2026.

Return from

HK$6,673

One-way from

HK$3,759

Popular in

November

Cheapest in

December

Average price

HK$7,934
United Airlines
  • United Airlines
  • 1-5-8-5
  • 4 total stops
  • 55h 05m total
  • Hong Kong to Washington, D.C.
Search Deals
Delta
  • Delta
  • 12-6
  • 2 total stops
  • 35h 10m total
  • Hong Kong to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (HK$94 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$174 potential savings vs. average return price).
Search Deals
Average for return flights in March 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 21 March 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

Wed 1-7

15:35-08:45

2 stops29h 10m

Washington, D.C. Dulles Intl

Fri 31-7

11:05-21:55

1 stop22h 50m

HK$8,795

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Wed 22-4

11:45-11:33

2 stops35h 48m

Washington, D.C. Dulles Intl

Sun 26-4

12:40-05:40

1 stop29h 00m

HK$8,897

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 9-5

00:55-16:05

1 stop27h 10m

Washington, D.C. Dulles Intl

Sat 16-5

20:20-23:20

1 stop39h 00m

HK$8,944

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Tue 21-4

00:55-16:05

1 stop27h 10m

Washington, D.C. Dulles Intl

Sun 26-4

11:00-23:20

1 stop24h 20m

HK$8,983

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Fri 1-5

22:15-16:05

2 stops29h 50m

Washington, D.C. Dulles Intl

Fri 8-5

11:00-23:20

1 stop24h 20m

HK$9,046

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 3-5

22:15-16:05

2 stops29h 50m

Washington, D.C. Dulles Intl

Sun 10-5

11:00-23:20

1 stop24h 20m

HK$9,187

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Tue 5-5

22:15-16:05

2 stops29h 50m

Washington, D.C. Dulles Intl

Tue 26-5

11:00-23:20

1 stop24h 20m

HK$9,226

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 5-7

08:55-11:35

1 stop38h 40m

Washington, D.C. Dulles Intl

Sun 31-1

21:10-17:05

1 stop30h 55m

HK$9,939
Fastest return journey

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Mon 6-7

22:30-11:35

1 stop25h 05m

Washington, D.C. Dulles Intl

Fri 5-2

21:10-08:25

1 stop22h 15m

HK$9,939

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Tue 7-7

21:05-22:30

1 stop37h 25m

Washington, D.C. Dulles Intl

Fri 5-2

23:55-18:30

1 stop29h 35m

HK$9,962

Flights are sorted by cheapest return flights first.

Deals found on 18-3

Showing 1-10 of 23 resultsSorted by cheapest first
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2
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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 25 hours 5 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 best airline to fly to Dulles Intl?

    Based on reviews from Cheapflights users, United Airlines is rated the highest out of the airlines that fly to Dulles Intl.

  • 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$1,396, while return flights cost around HK$2,868.

  • How much is a return flight to Dulles Intl?

    A return flight to Dulles Intl will typically cost around HK$3,229, however they can be found for as little as HK$2,868.

  • 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
Herndon

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