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Heathrow Airport to Dulles International Airport flight

Explore the cheapest one-way and round-trip flights from Heathrow Airport to Dulles International Airport over the next 90 days, with one-way fares from HK$ 2,992 and round-trip from HK$ 3,161. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        LHR 15:50
        8h 25m
        Direct
        IAD 19:15
        London - Washington D.C. | Fri, Oct 16 | Virgin Atlantic
        IAD 22:05
        7h 35m
        Direct
        LHR 10:40
        Washington D.C. - London | Thu, Oct 22 | Virgin Atlantic
        HK$ 4,023 HK$ 4,763
        16% off
        16% off
        HK$ 4,763 HK$ 4,023
      • LHR 15:50
        8h 25m
        Direct
        IAD 19:15
        London - Washington D.C. | Fri, Oct 16 | Delta Air Lines
        IAD 22:05
        7h 35m
        Direct
        LHR 10:40
        Washington D.C. - London | Thu, Oct 22 | Virgin Atlantic
        HK$ 4,143 HK$ 4,763
        13% off
        13% off
        HK$ 4,763 HK$ 4,143
      • LHR 21:25
        26h 55m
        1 stop
        IAD 19:20
        London - Washington D.C. | Sat, Oct 31 | Icelandair
        IAD 20:40
        13h
        1 stop
        LGW 13:40
        Washington D.C. - London | Tue, Nov 3 | Icelandair
        HK$ 3,161 HK$ 4,763
        34% off
        34% off
        HK$ 4,763 HK$ 3,161
      • LHR 21:25
        26h 55m
        1 stop
        IAD 19:20
        London - Washington D.C. | Sat, Oct 10 | Icelandair
        IAD 20:30
        13h 10m
        1 stop
        LGW 14:40
        Washington D.C. - London | Thu, Oct 15 | Icelandair
        HK$ 3,213
        33% off
        HK$ 4,763 HK$ 3,213
      • LHR 21:25
        26h 55m
        1 stop
        IAD 19:20
        London - Washington D.C. | Wed, Oct 28 | Icelandair
        IAD 20:40
        18h 50m
        1 stop
        LHR 19:30
        Washington D.C. - London | Mon, Nov 2 | Icelandair
        HK$ 3,363
        28% off
        HK$ 4,763 HK$ 3,363
      • LHR 20:35
        26h 55m
        1 stop
        IAD 18:30
        London - Washington D.C. | Sat, Nov 14 | Icelandair
        IAD 19:40
        18h 50m
        1 stop
        LHR 19:30
        Washington D.C. - London | Wed, Nov 18 | Icelandair
        HK$ 3,380
        28% off
        HK$ 4,763 HK$ 3,380
      • LHR 12:15
        11h 15m
        1 stop
        IAD 18:30
        London - Washington D.C. | Fri, Nov 13 | Icelandair
        IAD 19:40
        18h 50m
        1 stop
        LHR 19:30
        Washington D.C. - London | Fri, Nov 20 | Icelandair
        HK$ 3,387
        28% off
        HK$ 4,763 HK$ 3,387
      • LHR 20:35
        26h 55m
        1 stop
        IAD 18:30
        London - Washington D.C. | Thu, Nov 12 | Icelandair
        IAD 19:40
        10h 10m
        1 stop
        LHR 10:50
        Washington D.C. - London | Wed, Nov 18 | Icelandair
        HK$ 3,393
        28% off
        HK$ 4,763 HK$ 3,393
      • LHR 13:05
        11h 15m
        1 stop
        IAD 19:20
        London - Washington D.C. | Thu, Oct 29 | Icelandair
        IAD 20:40
        10h 15m
        1 stop
        LGW 10:55
        Washington D.C. - London | Thu, Nov 5 | Icelandair
        HK$ 3,582
        25% off
        HK$ 4,763 HK$ 3,582
      • LHR 21:25
        26h 55m
        1 stop
        IAD 19:20
        London - Washington D.C. | Fri, Oct 23 | Icelandair
        IAD 23:20
        10h 20m
        1 stop
        LGW 14:40
        Washington D.C. - London | Tue, Oct 27 | Icelandair
        HK$ 3,659
        23% off
        HK$ 4,763 HK$ 3,659
      • LHR 13:05
        11h 15m
        1 stop
        IAD 19:20
        London - Washington D.C. | Sun, Oct 11 | Icelandair
        IAD 20:30
        13h 10m
        1 stop
        LGW 14:40
        Washington D.C. - London | Thu, Oct 15 | Icelandair
        HK$ 3,686
        23% off
        HK$ 4,763 HK$ 3,686
      • LHR 21:25
        26h 55m
        1 stop
        IAD 19:20
        London - Washington D.C. | Fri, Oct 30 | Icelandair
        IAD 20:40
        10h 10m
        1 stop
        LHR 10:50
        Washington D.C. - London | Thu, Nov 5 | Icelandair
        HK$ 3,686
        23% off
        HK$ 4,763 HK$ 3,686
      • LHR 21:25
        26h 55m
        1 stop
        IAD 19:20
        London - Washington D.C. | Fri, Oct 16 | Icelandair
        IAD 23:20
        16h
        1 stop
        LHR 20:20
        Washington D.C. - London | Fri, Oct 23 | Icelandair
        HK$ 3,698
        22% off
        HK$ 4,763 HK$ 3,698
      • LHR 12:15
        11h 15m
        1 stop
        IAD 19:30
        London - Washington D.C. | Sat, Nov 7 | Icelandair
        IAD 19:40
        10h 15m
        1 stop
        LGW 10:55
        Washington D.C. - London | Sat, Nov 14 | Icelandair
        HK$ 3,698
        22% off
        HK$ 4,763 HK$ 3,698
      • LON 13:00
        17h 25m
        1 stop
        WAS 14:00
        London - Washington D.C. | Sun, Sep 20 | Normal Airline
        WAS 15:00
        6h
        Direct
        LON 16:00
        Washington D.C. - London | Tue, Sep 22 | Normal Airline
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      • Cheapest nonstop
        LHR 16:25
        8h 30m
        Direct
        IAD 19:55
        London - Washington D.C. | Sat, Nov 14 | British Airways
        HK$ 3,687 HK$ 4,248
        13% off
        13% off
        HK$ 4,248 HK$ 3,687
      • LHR 16:25
        8h 30m
        Direct
        IAD 19:55
        London - Washington D.C. | Mon, Nov 16 | British Airways
        HK$ 3,695 HK$ 4,248
        13% off
        13% off
        HK$ 4,248 HK$ 3,695
      • LHR 13:05
        11h 15m
        1 stop
        IAD 19:20
        London - Washington D.C. | Thu, Oct 29 | Icelandair
        HK$ 2,992 HK$ 4,248
        30% off
        30% off
        HK$ 4,248 HK$ 2,992
      • LHR 12:15
        11h 15m
        1 stop
        IAD 18:30
        London - Washington D.C. | Fri, Nov 13 | Icelandair
        HK$ 3,121
        27% off
        HK$ 4,248 HK$ 3,121
      • LHR 13:05
        11h 15m
        1 stop
        IAD 19:20
        London - Washington D.C. | Fri, Oct 2 | Icelandair
        HK$ 3,215
        24% off
        HK$ 4,248 HK$ 3,215
      • LHR 20:35
        26h 55m
        1 stop
        IAD 18:30
        London - Washington D.C. | Thu, Nov 12 | Icelandair
        HK$ 3,254
        23% off
        HK$ 4,248 HK$ 3,254
      • LHR 13:05
        11h 15m
        1 stop
        IAD 19:20
        London - Washington D.C. | Sun, Oct 11 | Icelandair
        HK$ 3,457
        19% off
        HK$ 4,248 HK$ 3,457
      • LHR 20:35
        26h 55m
        1 stop
        IAD 18:30
        London - Washington D.C. | Sat, Nov 14 | Icelandair
        HK$ 3,483
        18% off
        HK$ 4,248 HK$ 3,483
      • LHR 07:50
        12h 55m
        1 stop
        IAD 15:45
        London - Washington D.C. | Mon, Nov 16 | Aer Lingus
        HK$ 3,514
        17% off
        HK$ 4,248 HK$ 3,514
      • LHR 12:15
        11h 15m
        1 stop
        IAD 18:30
        London - Washington D.C. | Tue, Nov 10 | Icelandair
        HK$ 3,573
        16% off
        HK$ 4,248 HK$ 3,573
      • LHR 11:30
        12h 20m
        1 stop
        IAD 18:50
        London - Washington D.C. | Thu, Oct 29 | American Airlines
        HK$ 3,582
        16% off
        HK$ 4,248 HK$ 3,582
      • LHR 07:50
        12h 55m
        1 stop
        IAD 15:45
        London - Washington D.C. | Tue, Nov 17 | Aer Lingus
        HK$ 3,613
        15% off
        HK$ 4,248 HK$ 3,613
      • LHR 11:30
        12h 20m
        1 stop
        IAD 18:50
        London - Washington D.C. | Thu, Oct 29 | British Airways
        HK$ 3,623
        15% off
        HK$ 4,248 HK$ 3,623
      • LHR 19:05
        26h 15m
        1 stop
        IAD 16:20
        London - Washington D.C. | Fri, Nov 13 | American Airlines
        HK$ 3,684
        13% off
        HK$ 4,248 HK$ 3,684
      • LON 13:00
        17h 25m
        1 stop
        WAS 14:00
        London - Washington D.C. | Sun, Sep 20 | Normal Airline
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Flight prices from Heathrow Airport to Dulles International Airport are based on the average fares across airlines for the next three months, based on Trip.com’s latest data.

Trip.com Price Insights: Flights from Heathrow Airport to Dulles International Airport

Which month has the cheapest one-way flights from Heathrow Airport to Dulles International Airport?

The data is based on Trip.com data from the past 12 months and shows the average one-way fares by month from Heathrow Airport to Dulles International Airport.

Based on Trip.com data from the past 12 months, the cheapest one-way flights from Heathrow Airport to Dulles International Airport are usually in March, with an average price of HK$ 7,002. July sees the highest fares, around HK$ 10,306.

HK$ 10,306
HK$ 8,654
HK$ 7,002
HK$ 5,350
    Cheapest
  • HK$ 8,041
    Sep
  • HK$ 7,505
    Oct
  • HK$ 7,643
    Nov
  • HK$ 7,627
    Dec
  • HK$ 7,480
    Jan
  • HK$ 7,932
    Feb
  • HK$ 7,002
    Mar
  • HK$ 7,768
    Apr
  • HK$ 7,629
    May
  • HK$ 9,644
    Jun
  • HK$ 10,306
    Jul
  • HK$ 8,960
    Aug

Which month has the cheapest round-trip flights from Heathrow Airport to Dulles International Airport?

The data is based on Trip.com data from the past 12 months and shows the average round-trip fares by month from Heathrow Airport to Dulles International Airport.

Based on Trip.com data from the past 12 months, the cheapest round‑trip flights from Heathrow Airport to Dulles International Airport are usually in September, with an average price of HK$ 5,779. May sees the highest fares, around HK$ 7,892.

HK$ 7,892
HK$ 6,836
HK$ 5,779
HK$ 4,723
  • HK$ 5,779
    Sep
  • HK$ 6,718
    Oct
  • HK$ 6,446
    Nov
  • HK$ 7,190
    Dec
  • HK$ 6,691
    Jan
  • HK$ 6,789
    Feb
  • HK$ 7,201
    Mar
  • HK$ 6,408
    Apr
  • HK$ 7,892
    May
  • HK$ 7,653
    Jun
  • HK$ 7,402
    Jul
  • HK$ 6,834
    Aug

Which day of the week has the cheapest flights from Heathrow Airport to Dulles International Airport?

The data is based on Trip.com data from the past 12 months and shows the average fares by each day of the week from Heathrow Airport to Dulles International Airport.

Based on Trip.com data from the past 12 months, the cheapest day for flights from Heathrow Airport to Dulles International Airport is Wednesday, with average prices lower than other days. Try to avoid departing on Sunday, as fares are typically the highest.

HK$ 8,716
HK$ 7,765
HK$ 6,813
HK$ 5,862
    Cheapest
  • HK$ 8,491
    Mon
  • HK$ 8,370
    Tue
  • HK$ 6,813
    Wed
  • HK$ 7,597
    Thu
  • HK$ 7,219
    Fri
  • HK$ 8,693
    Sat
  • HK$ 8,716
    Sun

Which airline offers the cheapest flights from Heathrow Airport to Dulles International Airport?

The cheapest airline flying from Heathrow Airport to Dulles International Airport is Icelandair (from HK$ 2,992) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Icelandair
From HK$ 2,992
Aer Lingus
From HK$ 3,514
American Airlines
From HK$ 3,582
British Airways
From HK$ 3,623
Iberia
From HK$ 3,744
Finnair
From HK$ 3,775
TAP Air Portugal
From HK$ 4,048
Brussels Airlines
From HK$ 4,055
Swiss Airlines
From HK$ 4,249
Air Canada
From HK$ 4,358

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What is the flight schedule from Heathrow Airport to Dulles International Airport?

Check the schedule for flights from London to Washington D.C. and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. BA293

    Heathrow Airport

    17:05

    LHR

    8h 15m

    20:20

    IAD

    S M T W T F S
    Search

  2. FI451

    Heathrow Airport

    13:05

    LHR

    3h 10m

    Direct

    15:15

    KEF

    S M T W T F S
    Search

  3. FI645

    Keflavík International Airport

    16:50

    KEF

    6h 30m

    Direct

    19:20

    IAD

    S M T W T F S

  4. AA8603

    Heathrow Airport

    11:30

    LHR

    2h 30m

    Direct

    15:00

    MAD

    S M T W T F S
    Search

  5. AA8729

    Madrid Barajas Airport

    12:20

    MAD

    9h 10m

    Direct

    15:30

    IAD

    S M T W T F S

  6. BA7069

    Heathrow Airport

    11:30

    LHR

    2h 30m

    Direct

    15:00

    MAD

    S M T W T F S
    Search

  7. BA4257

    Madrid Barajas Airport

    12:20

    MAD

    9h 10m

    Direct

    15:30

    IAD

    S M T W T F S

  8. EI151

    Heathrow Airport

    07:40

    LHR

    1h 20m

    Direct

    09:00

    DUB

    S M T W T F -
    Search

  9. EI117

    Dublin Airport

    12:35

    DUB

    8h 10m

    Direct

    15:45

    IAD

    S M T W T F S

  10. FI455

    Heathrow Airport

    21:25

    LHR

    3h 10m

    Direct

    23:35

    KEF

    S M T W T F S
    Search

  11. FI645

    Keflavík International Airport

    16:50

    KEF

    6h 30m

    Direct

    19:20

    IAD

    S M T W T F S

  12. FI455

    Heathrow Airport

    21:25

    LHR

    3h 10m

    Direct

    23:35

    KEF

    S M T W T F S
    Search

  13. FI689

    Keflavík International Airport

    16:45

    KEF

    8h 5m

    Direct

    20:50

    MCO

    - M - W - F S

  14. F94230

    Orlando International Airport

    08:06

    MCO

    2h 11m

    Direct

    10:17

    IAD

    S M T W T F S
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About Heathrow Airport and Dulles International Airport

Learn about Heathrow Airport (LHR) and Dulles International Airport (IAD) — including location, terminals, transportation, and travel tips.

Flight distance5,907.82km
Cheapest one-way ticket priceHK$ 2,992
Cheapest return ticket priceHK$ 3,161

FAQs for Heathrow Airport to Dulles International Airport Flights

  • How long is the flight from Heathrow Airport to Dulles International Airport?

    Heathrow Airport to Dulles International Airport takes about 7 hours 56 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 17 daily flights from Heathrow Airport (LHR) to Dulles International Airport (IAD).
  • The earliest flight from Heathrow Airport to Dulles International Airport departs at 12:15, and the last departs at 17:05, with about 30 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Heathrow Airport (LHR) to Dulles International Airport (IAD) is quite popular. Without considering departure times or holidays, tickets cost around HK$ 9,925 in September, the most expensive month to book this route.
  • The earliest flight departs from Heathrow Airport (LHR) at 07:10 and arrives in Dulles International Airport (IAD) at 11:00.
  • The latest flight departs from Heathrow Airport (LHR) at 17:35 and arrives in Dulles International Airport (IAD) at 20:35.
  • British Airways is a very popular airline operating an average of 7495 flights per month.
  • One-way flights from Heathrow Airport to Dulles International Airport currently start from HK$ 2,992, and round-trip fares start from HK$ 3,161. The current lowest fare is a Icelandair flight departing on Thu, Oct 29; prices may vary depending on availability.
  • Yes. American Airlines, British Airways, Finnair, Aer Lingus and Iberia operate direct flights from Heathrow Airport to Dulles International Airport, with an average flight time of 2 hours 51 minutes, and around 43 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Heathrow Airport to Dulles International Airport is HK$ 7,957. Prices may vary depending on the departure date, airline, and availability.
  • Heathrow Airport to Dulles International Airport operates around 29 weekly flights, mainly by British Airways, United Airlines and Virgin Atlantic. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Heathrow Airport and Dulles International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

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Note: Prices shown on this page are the lowest estimated prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are shown before payment. Charges for checked baggage, meals, Wi-Fi, and other optional services may also appear in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and with many routes refreshed in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.