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HK$3,978+ 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 23-1. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
22 Dec — 29 Dec1
1 adult
1 adult, Economy, 0 bags

Flights to Dulles Intl in 2025

Find the latest flights to Dulles Intl in 2025, 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 22 November 2025.

Return from

HK$6,874

One-way from

HK$3,978

Popular in

November

Cheapest in

December

Average price

HK$10,136
United Airlines
  • United Airlines
  • 12-3-16-3
  • 4 total stops
  • 53h 12m total
  • Hong Kong to Washington, D.C.
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23-1
  • 23-1
  • 3 total stops
  • 50h 14m total
  • Hong Kong to Washington, D.C.
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Highest demand for flights based on searches. 2% potential increase in price (HK$182 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$178 potential savings vs. average return price).
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Average for return flights in November 2025
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Find flight deals to Dulles Intl Airport

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 22 November 2025.

Thu 25-1217:40HKG - IAD
1 stop37h 50mAir China
Fri 9-122:00IAD - HKG
1 stop33h 50mAir China
Deal found 20-11HK$7,279
Thu 25-1218:05HKG - IAD
1 stop27h 15mMultiple Airlines
Fri 9-121:15IAD - HKG
2 stops45h 40mMultiple Airlines
Deal found 20-11HK$8,937
Thu 25-1220:25HKG - IAD
2 stops38h 00mAir Canada
Fri 9-117:10IAD - HKG
2 stops36h 30mAir Canada
Deal found 20-11HK$8,999
Sat 6-1222:30HKG - IAD
1 stop21h 25mUnited Airlines
Sun 4-118:01IAD - HKG
1 stop23h 44mUnited Airlines
Deal found 21-11HK$9,030
Sat 6-1222:45HKG - IAD
1 stop34h 54mUnited Airlines
Fri 2-122:05IAD - HKG
1 stop43h 55mUnited Airlines
Deal found 21-11HK$9,233
Sat 6-1220:25HKG - IAD
2 stops37h 34mAir Canada
Sun 4-116:30IAD - HKG
2 stops37h 10mAir Canada
Deal found 21-11HK$9,272
Fri 5-1200:55HKG - IAD
2 stops35h 32mDelta
Sun 4-107:05IAD - HKG
2 stops39h 15mDelta
Deal found 20-11HK$9,801

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 22 November 2025.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 25-1

11:25-21:17

2 stops22h 52m

Washington, D.C. Dulles Intl

Wed 28-1

16:10-06:45

1 stop25h 35m

HK$7,356

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 25-1

23:20-11:45

1 stop25h 25m

Washington, D.C. Dulles Intl

Wed 28-1

21:15-17:05

1 stop30h 50m

HK$7,800

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 24-1

00:25-15:55

1 stop28h 30m

Washington, D.C. Dulles Intl

Wed 28-1

10:40-21:40

1 stop22h 00m

HK$8,937

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 6-12

22:30-06:55

1 stop21h 25m

Washington, D.C. Dulles Intl

Sun 4-1

18:01-06:45

1 stop23h 44m

HK$9,030

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sat 6-12

22:45-20:39

1 stop34h 54m

Washington, D.C. Dulles Intl

Fri 2-1

22:05-07:00

1 stop43h 55m

HK$9,233

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 25-1

20:25-16:13

2 stops32h 48m

Washington, D.C. Dulles Intl

Wed 28-1

17:16-18:40

2 stops36h 24m

HK$9,279

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Mon 8-12

07:40-14:29

3 stops43h 49m

HK$4,017

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Mon 26-1

20:25-11:35

2 stops28h 10m

HK$4,157

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Fri 16-1

20:25-20:54

2 stops37h 29m

HK$4,165

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Mon 1-12

20:15-18:30

1 stop35h 15m

HK$4,188

Flights are sorted by cheapest return flights first.

Deals found on 20-11

Showing 1-10 of 17 results
1
2

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

What are the cheapest airlines that fly to Dulles Intl?

The cheapest airline flying from Hong Kong to Dulles Intl is United Airlines.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated 22 November 2025.
Check out reviews from past customers who have flown United Airlines to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,035 reviews
Check prices

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,035 reviews
United Airlines
7.4
Good
9,035 reviews
Check prices

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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$1,426, while return flights cost around HK$1,873.

  • How much is a return flight to Dulles Intl?

    A return flight to Dulles Intl will typically cost around HK$1,979, however they can be found for as little as HK$1,873.

  • 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
Silver Spring

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