Trip.com
>
Cheap Flights
>
United Kingdom
>
London
>
Washington D.C. to London flight
>
Dulles International Airport to Heathrow Airport flight

Search for flights from Washington D.C. to London and check out affordable one-way and round-trip options.

      • Cheapest nonstop
        IAD 22:55
        7h 25m
        Direct
        LHR 11:20
        Washington D.C. - London | Thu, Aug 20 | Virgin Atlantic
        LHR 17:55
        8h
        Direct
        IAD 20:55
        London - Washington D.C. | Thu, Aug 27 | Virgin Atlantic
        NZD 1,542 NZD 2,017
        24% off
        24% off
        NZD 2,017 NZD 1,542
      • IAD 22:15
        7h 25m
        Direct
        LHR 10:40
        Washington D.C. - London | Wed, Aug 19 | United Airlines
        LHR 12:15
        8h 15m
        Direct
        IAD 15:30
        London - Washington D.C. | Wed, Aug 26 | United Airlines
        NZD 1,573 NZD 2,017
        22% off
        22% off
        NZD 2,017 NZD 1,573
      • IAD 20:30
        10h 25m
        1 stop
        LHR 11:55
        Washington D.C. - London | Thu, Aug 6 | Icelandair
        LGW 11:30
        12h 25m
        1 stop
        IAD 18:55
        London - Washington D.C. | Sun, Aug 9 | British Airways
        NZD 1,261 NZD 2,017
        37% off
        37% off
        NZD 2,017 NZD 1,261
      • IAD 20:30
        10h 25m
        1 stop
        LHR 11:55
        Washington D.C. - London | Wed, Aug 5 | Icelandair
        LGW 11:30
        12h 25m
        1 stop
        IAD 18:55
        London - Washington D.C. | Sun, Aug 9 | British Airways
        NZD 1,261
        37% off
        NZD 2,017 NZD 1,261
      • IAD 20:20
        14h 40m
        1 stop
        LHR 16:00
        Washington D.C. - London | Sun, Jul 19 | Scandinavian Airlines
        LHR 19:30
        26h 30m
        1 stop
        IAD 17:00
        London - Washington D.C. | Fri, Jul 24 | Scandinavian Airlines
        NZD 1,262
        37% off
        NZD 2,017 NZD 1,262
      • IAD 23:20
        16h
        1 stop
        LHR 20:20
        Washington D.C. - London | Fri, Aug 14 | Icelandair
        LGW 11:30
        12h 25m
        1 stop
        IAD 18:55
        London - Washington D.C. | Sun, Aug 16 | British Airways
        NZD 1,262
        37% off
        NZD 2,017 NZD 1,262
      • IAD 23:20
        16h
        1 stop
        LHR 20:20
        Washington D.C. - London | Sat, Aug 1 | Icelandair
        LHR 11:30
        12h 20m
        1 stop
        IAD 18:50
        London - Washington D.C. | Fri, Aug 7 | British Airways
        NZD 1,263
        37% off
        NZD 2,017 NZD 1,263
      • IAD 20:30
        10h 25m
        1 stop
        LHR 11:55
        Washington D.C. - London | Fri, Jul 31 | Icelandair
        LHR 11:30
        12h 20m
        1 stop
        IAD 18:50
        London - Washington D.C. | Fri, Aug 7 | British Airways
        NZD 1,263
        37% off
        NZD 2,017 NZD 1,263
      • IAD 20:30
        10h 25m
        1 stop
        LHR 11:55
        Washington D.C. - London | Thu, Aug 20 | Icelandair
        LHR 09:15
        11h 43m
        1 stop
        DCA 15:58
        London - Washington D.C. | Thu, Aug 27 | British Airways
        NZD 1,272
        37% off
        NZD 2,017 NZD 1,272
      • IAD 20:20
        14h 40m
        1 stop
        LHR 16:00
        Washington D.C. - London | Wed, Jul 1 | Scandinavian Airlines
        LHR 19:30
        26h 30m
        1 stop
        IAD 17:00
        London - Washington D.C. | Sun, Jul 5 | Scandinavian Airlines
        NZD 1,305
        35% off
        NZD 2,017 NZD 1,305
      • IAD 20:20
        16h 20m
        1 stop
        LHR 17:40
        Washington D.C. - London | Sun, Jun 28 | Scandinavian Airlines
        LHR 10:20
        11h 40m
        1 stop
        IAD 17:00
        London - Washington D.C. | Tue, Jun 30 | Scandinavian Airlines
        NZD 1,305
        35% off
        NZD 2,017 NZD 1,305
      • IAD 20:20
        14h 40m
        1 stop
        LHR 16:00
        Washington D.C. - London | Tue, Jun 23 | Scandinavian Airlines
        LHR 10:20
        11h 40m
        1 stop
        IAD 17:00
        London - Washington D.C. | Mon, Jun 29 | Scandinavian Airlines
        NZD 1,305
        35% off
        NZD 2,017 NZD 1,305
      • WAS 13:00
        17h 25m
        1 stop
        LON 14:00
        Washington D.C. - London | Tue, Jun 23 | Normal Airline
        LON 15:00
        6h
        Direct
        WAS 16:00
        London - Washington D.C. | Thu, Jun 25 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        IAD 22:15
        7h 25m
        Direct
        LHR 10:40
        Washington D.C. - London | Sat, Aug 1 | United Airlines
        NZD 736 NZD 998
        26% off
        26% off
        NZD 998 NZD 736
      • IAD 22:55
        7h 25m
        Direct
        LHR 11:20
        Washington D.C. - London | Wed, Aug 19 | Virgin Atlantic
        NZD 778 NZD 998
        22% off
        22% off
        NZD 998 NZD 778
      • IAD 20:30
        18h 50m
        1 stop
        LHR 20:20
        Washington D.C. - London | Wed, Jul 29 | Icelandair
        NZD 442 NZD 998
        56% off
        56% off
        NZD 998 NZD 442
      • IAD 20:30
        10h 25m
        1 stop
        LHR 11:55
        Washington D.C. - London | Wed, Aug 5 | Icelandair
        NZD 444
        56% off
        NZD 998 NZD 444
      • IAD 20:30
        18h 50m
        1 stop
        LHR 20:20
        Washington D.C. - London | Wed, Jul 22 | Icelandair
        NZD 445
        55% off
        NZD 998 NZD 445
      • IAD 20:30
        18h 50m
        1 stop
        LHR 20:20
        Washington D.C. - London | Thu, Aug 6 | Icelandair
        NZD 446
        55% off
        NZD 998 NZD 446
      • IAD 20:30
        18h 50m
        1 stop
        LHR 20:20
        Washington D.C. - London | Sat, Aug 1 | Icelandair
        NZD 515
        48% off
        NZD 998 NZD 515
      • IAD 20:30
        10h 25m
        1 stop
        LHR 11:55
        Washington D.C. - London | Sat, Jul 11 | Icelandair
        NZD 536
        46% off
        NZD 998 NZD 536
      • IAD 20:30
        10h 25m
        1 stop
        LHR 11:55
        Washington D.C. - London | Mon, Jul 20 | Icelandair
        NZD 537
        46% off
        NZD 998 NZD 537
      • IAD 20:30
        10h 25m
        1 stop
        LHR 11:55
        Washington D.C. - London | Thu, Jul 9 | Icelandair
        NZD 537
        46% off
        NZD 998 NZD 537
      • IAD 23:20
        31h 35m
        1 stop
        LHR 11:55
        Washington D.C. - London | Wed, Jul 8 | Icelandair
        NZD 541
        46% off
        NZD 998 NZD 541
      • IAD 19:59
        28h 56m
        1 stop
        LHR 05:55
        Washington D.C. - London | Fri, Aug 14 | Delta Air Lines
        NZD 564
        43% off
        NZD 998 NZD 564
      • WAS 13:00
        17h 25m
        1 stop
        LON 14:00
        Washington D.C. - London | Tue, Jun 23 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from Dulles International Airport to Heathrow Airport are based on average prices across airlines for the next 3 months according to the latest Trip.com data.

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

What is the cheapest month to fly from Dulles International Airport to Heathrow Airport?

The data is based on the past 12 months and shows the average one-way ticket prices from Dulles International Airport to Heathrow Airport for each month in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest one-way flights from Dulles International Airport to Heathrow Airport are usually in August, with an average price of NZD 798. It is best to avoid June, when the average price can reach NZD 2,511.

NZD 2,511
NZD 1,655
NZD 798
0
    Cheapest
  • NZD 2,511
    Jun
  • NZD 1,164
    Jul
  • NZD 798
    Aug
  • NZD 975
    Sep
  • NZD 874
    Oct
  • NZD 909
    Nov
  • NZD 1,186
    Dec
  • NZD 927
    Jan
  • NZD 928
    Feb
  • NZD 1,037
    Mar
  • NZD 1,096
    Apr
  • NZD 1,366
    May

What is the cheapest day of the week to fly from Dulles International Airport to Heathrow Airport?

The data is based on the past 12 months and shows the average ticket prices from Dulles International Airport to Heathrow Airport for each day of the week in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest departure day from Dulles International Airport to Heathrow Airport is Monday, with average prices usually lower than other days. Avoid departing on Wednesday as prices are typically highest on that day.

NZD 1,281
NZD 1,141
NZD 1,001
NZD 861
  • NZD 1,001
    Mon
  • NZD 1,032
    Tue
  • NZD 1,281
    Wed
  • NZD 1,158
    Thu
  • NZD 1,024
    Fri
  • NZD 1,249
    Sat
  • NZD 1,036
    Sun

Selected Airlines from Dulles International Airport to Heathrow Airport

See which airlines fly from Washington D.C. to London. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Icelandair
From NZD 442
TAP Air Portugal
From NZD 607
Delta Air Lines
From NZD 671
Frontier Airlines
From NZD 688
United Airlines
From NZD 725
Air Canada
From NZD 746
Brussels Airlines
From NZD 751
Swiss Airlines
From NZD 754
Virgin Atlantic
From NZD 763
Lufthansa
From NZD 768

Find more flights and airlines

Flight Schedule from Dulles International Airport to Heathrow Airport

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M T W T F S
    Search

  2. FI450

    Keflavík International Airport

    07:40

    KEF

    3h 15m

    Direct

    11:55

    LHR

    S M T W T F S

  3. DL5076

    Dulles International Airport

    19:59

    IAD

    1h 28m

    Direct

    21:27

    JFK

    S M T W T F S
    Search

  4. VS138

    John F. Kennedy International Airport

    23:00

    JFK

    7h

    Direct

    11:00

    LHR

    S M T W T F S

  5. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M T W T F S
    Search

  6. FI416

    Keflavík International Airport

    07:30

    KEF

    2h 35m

    Direct

    11:05

    DUB

    - - T - T - S

  7. EI166

    Dublin Airport

    13:30

    DUB

    1h 30m

    Direct

    15:00

    LHR

    S M T W T F S

  8. TP234

    Dulles International Airport

    22:35

    IAD

    7h 20m

    Direct

    10:55

    LIS

    S M T W T F S
    Search

  9. TP1350

    Humberto Delgado Airport

    15:00

    LIS

    2h 45m

    Direct

    17:45

    LHR

    S M T W T F S

  10. FI648

    Dulles International Airport

    23:20

    IAD

    5h 50m

    Direct

    09:10

    KEF

    - - T - T - S
    Search

  11. FI322

    Keflavík International Airport

    10:40

    KEF

    2h 45m

    Direct

    15:25

    OSL

    S M - W T F S

  12. SK811

    Oslo Airport

    17:30

    OSL

    2h 20m

    Direct

    18:50

    LHR

    S M T W T F S

  13. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M T W T F S
    Search

  14. FI318

    Keflavík International Airport

    07:50

    KEF

    2h 45m

    Direct

    12:35

    OSL

    S M T W T F S

  15. SK809

    Oslo Airport

    15:05

    OSL

    2h 20m

    Direct

    16:25

    LHR

    S M T W T F S

  16. FI648

    Dulles International Airport

    23:20

    IAD

    5h 50m

    Direct

    09:10

    KEF

    - - T - T - S
    Search

  17. FI454

    Keflavík International Airport

    16:10

    KEF

    3h 10m

    Direct

    20:20

    LHR

    S M T W T F S

  18. DL5835

    Dulles International Airport

    12:29

    IAD

    1h 29m

    Direct

    13:58

    JFK

    S M T W T F S
    Search

  19. VS138

    John F. Kennedy International Airport

    23:00

    JFK

    7h

    Direct

    11:00

    LHR

    S M T W T F S

  20. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M T W T F S
    Search

  21. FI454

    Keflavík International Airport

    16:10

    KEF

    3h 10m

    Direct

    20:20

    LHR

    S M T W T F S

  22. TP234

    Dulles International Airport

    22:35

    IAD

    7h 20m

    Direct

    10:55

    LIS

    S M T W T F S
    Search

  23. TP1366

    Humberto Delgado Airport

    20:00

    LIS

    2h 55m

    Direct

    22:55

    LHR

    S M T W T F S
Find more flights and airlines

Dulles International Airport to Heathrow Airport Flights Info

Flight distance5,907.82km
Cheapest one-way ticket priceNZD 442
Cheapest return ticket priceNZD 1,261

FAQs for Dulles International Airport to Heathrow Airport Flights

  • How long does it take to fly from Dulles International Airport (IAD) to Heathrow Airport (LHR)?

    It takes around 7 hours 27 minutes to fly from Dulles International Airport (iad) to Heathrow Airport(lhr).
  • There are around 16 daily flights from Dulles International Airport (IAD) to Heathrow Airport (LHR).
  • Tickets cost around NZD 847 in September, making it the cheapest month to book. Dulles International Airport (IAD) to Heathrow Airport (LHR) is a popular route, so don't forget to book your tickets in advance.
  • The route from Dulles International Airport (IAD) to Heathrow Airport (LHR) is quite popular. Without considering departure times or holidays, tickets cost around NZD 1,560 in June, the most expensive month to book this route.
    • The distance from London Gatwick Airport to downtown is about 39km, by taxi about 50 minutes.
    • The distance from Heathrow Airport to downtown is about 23km, by taxi about 40 minutes.
    • The distance from London Luton Airport to downtown is about 44km, by taxi about 1 hour.
  • British Airways is a very popular airline operating an average of 5126 flights per month.

Find Cheap Flights with Trip.com

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

Book with no extra fees

Prices displayed on this page are all-inclusive (including taxes, fuel surcharges, civil aviation development fund, etc.), with all fees confirmed before payment. Fees for luggage, meals, Wi-Fi, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours—sometimes even in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the cancellation and change policies for each flight ticket during the booking process, including any fees and applicable conditions. Please check 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 according to the airline's ticket policy.
Cancellation/change due to a flight schedule change:
If the flight schedule has changed and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please visit the customer support pages.