HK$4,422+ Cheap flights to Washington, D.C.

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 18-11. Fares are subject to change and may not be available on all flights or dates of travel.
— WAS
27 Aug — 3 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to Washington, D.C. in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Washington, D.C.
Explore the most affordable flight options available to Washington, D.C.. Find the lowest fares based on data from user searches, with prices last updated on 28 July 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 27-7HK$5,732
Thu 12-1122:30
HKG
-
DCA
2 stops24h 26m
United Airlines
Sun 15-1112:50
DCA
-
HKG
2 stops28h 55m
United Airlines
Deal found 27-7HK$5,732
Sat 5-911:45
HKG
-
IAD
2 stops24h 59m
United Airlines
Sat 19-909:00
IAD
-
HKG
1 stop21h 30m
United Airlines
Deal found 28-7HK$6,038
Sat 14-1122:30
HKG
-
DCA
2 stops23h 26m
United Airlines
Sat 16-118:00
DCA
-
HKG
1 stop23h 45m
United Airlines
Deal found 26-7HK$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
Thu 10-917:45
HKG
-
IAD
1 stop37h 45m
Air China
Tue 15-923:00
IAD
-
HKG
1 stop32h 00m
Air China
Deal found 24-7HK$7,198
Tue 8-908:30
HKG
-
IAD
1 stop23h 00m
Air China
Tue 22-923:00
IAD
-
HKG
1 stop34h 05m
Air China
Deal found 24-7HK$7,222
Sun 27-910:10
HKG
-
DCA
2 stops45h 50m
Multiple Airlines
Sun 7-309:30
DCA
-
HKG
2 stops34h 30m
Multiple Airlines
Deal found 27-7HK$7,645
Sun 6-912:20
HKG
-
BWI
2 stops23h 09m
Delta
Wed 30-912:02
BWI
-
HKG
2 stops29h 03m
Delta
Deal found 28-7HK$7,669
Sun 6-912:20
HKG
-
IAD
2 stops33h 00m
Delta
Mon 21-910:15
IAD
-
HKG
2 stops30h 50m
Delta
Deal found 28-7HK$7,669
Sun 6-912:20
HKG
-
DCA
2 stops23h 28m
Delta
Wed 30-912:32
DCA
-
HKG
2 stops28h 33m
Delta
Deal found 28-7HK$7,669
Fri 13-1110:45
HKG
-
BWI
2 stops25h 18m
Delta
Tue 19-116:39
BWI
-
HKG
2 stops26h 01m
Delta
Deal found 26-7HK$7,684

Find flight deals to Washington, D.C.

Find the latest flights to Washington, D.C. 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 28 July 2026.

Return from

HK$5,732

One-way from

HK$4,422

Popular in

July

Cheapest in

October

Average price

HK$12,499
United Airlines
  • United Airlines
  • 2-11-6-11
  • 3 total stops
  • 54h 02m total
  • Hong Kong to Washington, D.C.
星宇航空
  • 星宇航空
  • 9-11
  • 2 total stops
  • 33h 10m total
  • Hong Kong to Washington, D.C.
Highest demand for flights based on searches. 9% potential increase in price (HK$1,036 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (HK$242 potential savings vs. average return price).
Average for return flights in July 2026

Cheapflights Fare Finder

 
Locate flights to Washington, D.C. 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 28 July 2026.
Use the filters below to find and compare flights to Washington, D.C. 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 - DCA

HKGDCA

Hong Kong Intl

Thu 12-11

22:30-09:56

2 stops24h 26m

Washington, D.C. Reagan-National

Sun 15-11

12:50-06:45

2 stops28h 55m

HK$5,732

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Tue 8-9

22:30-09:18

2 stops22h 48m

Washington, D.C. Dulles Intl

Tue 22-9

14:47-05:00

1 stop26h 13m

HK$6,038

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Wed 18-11

22:45-11:52

2 stops26h 07m

Washington, D.C. Dulles Intl

Thu 22-4

22:10-18:30

1 stop32h 20m

HK$6,038

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Mon 16-11

11:25-00:30

2 stops26h 05m

Washington, D.C. Dulles Intl

Mon 10-5

22:10-18:30

1 stop32h 20m

HK$6,038

Hong KongWashington, D.C.

HKG - DCA

HKGDCA

Hong Kong Intl

Sat 26-9

22:30-12:08

2 stops25h 38m

Washington, D.C. Reagan-National

Sun 7-3

07:50-06:45

1 stop33h 55m

HK$6,038

Hong KongWashington, D.C.

HKG - DCA

HKGDCA

Hong Kong Intl

Tue 8-9

21:45-09:59

2 stops24h 14m

Washington, D.C. Reagan-National

Tue 22-9

17:45-05:00

1 stop23h 15m

HK$6,038

Hong KongBaltimore

HKG - BWI

HKGBWI

Hong Kong Intl

Thu 3-9

09:25-23:18

2 stops25h 53m

Baltimore/Washington

Wed 16-9

14:03-05:05

2 stops27h 02m

HK$7,669

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 6-9

12:20-09:20

2 stops33h 00m

Washington, D.C. Dulles Intl

Mon 21-9

10:15-05:05

2 stops30h 50m

HK$7,669

Hong KongWashington, D.C.

HKG - IAD

HKGIAD

Hong Kong Intl

Sun 6-9

12:20-00:34

2 stops24h 14m

Washington, D.C. Dulles Intl

Wed 30-9

12:26-05:05

2 stops28h 39m

HK$7,669

Flights are sorted by cheapest return flights first.

Deals found on 24-7

Showing 1-10 of 57 resultsSorted by cheapest first
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6

Best time to book a flight to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

How long is the flight to Washington, D.C.?

On average, a flight from Hong Kong to Washington, D.C. takes 23 hours 48 minutes. Flights to Washington, D.C. from other popular cities in Hong Kong will vary in length. Below are a few examples of popular routes and their flight times.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. 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 Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., 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).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated 28 July 2026.
See what other customers who have flown with United Airlines to the United States have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.3

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Comfort

7.3

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

FAQs about flying to Washington, D.C.

Washington climate

The busiest seasons for tourist activities are spring and summer, in particular during the time when the cherry blossoms bloom and when schools are out for spring break and then summer holiday. In addition, when Congress is in session and from mid-January through June, hotels and restaurants are full of lobbyists, and the streets are often full of demonstrations. Spring and autumn have the most pleasant weather. Summers in Washington are hot, sometimes exceeding 37 degrees Celsius, and very humid. Winter weather is unpredictable, ranging from mild to very cold.

Getting around Washington

Washington is an easy city to get around. The streets are laid out in a grid, with numbered streets going in one direction and alphabetized streets going the other. The city is divided into four quadrants, with the Capitol building centering them all. Most of the major sights are within walking distance, but you can easily take the Metrobus or Metrorail (subway) if you get tired of walking.

What is good to know if travelling to Washington?

  • White House tours must be scheduled in advance through your member of Congress. Tours may be cancelled, so check before going. The White House website is as up-to-date as possible, and it lists the phone number for a last-minute check on your tour. It also lists items that you may not bring with you (almost everything); there are no storage facilities.
  • In addition to experiencing the beauty of the Capitol building and landscaping, many visitors want to sit in on Congressional debates. To do this, you must obtain gallery passes from your senator or representative’s office; the passes are free. As with the White House, call ahead to check the status of tours, access, and what you may bring.
  • Washington is full of historic sites. One unexpected site is the white neo-Federal Embassy Gulf Service Station, built in 1936 to fit in with the elegance of Washington architecture.
  • The Washington National Cathedral is a beautiful building located on one of the highest points in the city. Construction began in 1907 and was not completed until 1980. Though a cathedral of the Episcopal Church, it was built for the entire nation, and has been used for services from Jewish to Serbian Orthodox. The grounds are as lovely as the building, with gardens and a lawn where you can picnic. In addition to religious services, the cathedral offers guided and audio tours, recitals and concerts. Music lovers can visit the Cathedral for the twice-weekly lunchtime recitals on the magnificent Aeolian-Skinner organ, or attend one of their concerts (classical, jazz, folk) throughout the year.
  • There is always something to attend at the John F. Kennedy Centre for the Performing Arts. This extensive complex of theatres and concert halls, home to the National Symphony Orchestra and the Washington National Opera, hosts distinguished visiting performers and provides some free concerts. In addition to classical music and ballet, concerts include jazz, pops, and other types of music and dance.
  • When is the best time to fly to Washington?

    Peak season: The very busiest time for flights to Washington DC is from about mid-March through June, with school tours and holidaying families everywhere. Airfare and hotel rates are at their highest, and there are long lines for popular attractions. Off season: The quietest times are late August into early September and the period between Thanksgiving (end of November) and mid-January.

  • Can I find cheaper flights to Washington, D.C. 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 Washington, D.C. on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the cheapest airport to fly to in Washington, D.C.?

    Baltimore/Washington is currently the cheapest airport to fly to in Washington, D.C.. One-way flights to Baltimore/Washington typically cost HK$458, while return flights cost around HK$377.

  • How much is a return flight to Washington, D.C.?

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

  • Where does the fastest flight to Washington, D.C. depart from?

    For those looking to save time traveling to Washington, D.C., Hong Kong Intl offers the quickest one-way flight (22 hours 58 minutes).

  • 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.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Fairfax
Arlington

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Airports serving Washington, D.C.

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Why should you use Cheapflights to find cheap flight tickets to Washington, D.C.?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Washington, D.C..

Can Cheapflights find flights to Washington, D.C. with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights to Washington, D.C., users can toggle the no change fees filter when performing a flight search.

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Yes, Cheapflights offers price alerts on Washington, D.C. flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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