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

Explore the cheapest one-way and round-trip flights from Dulles International Airport to Heathrow Airport over the next 90 days, with one-way fares from CAD 408 and round-trip from CAD 747. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      IAD 21:55
      7h 15m
      LHR 10:10
      Washington D.C. - London | Thu, Dec 10 | British Airways
      LHR 16:25
      8h 30m
      IAD 19:55
      London - Washington D.C. | Wed, Dec 16 | British Airways
      CAD 1,007 CAD 1,192
      16% off
      16% off
      CAD 1,192 CAD 1,007
    • IAD 18:20
      7h 20m
      LHR 06:40
      Washington D.C. - London | Thu, Dec 10 | United Airlines
      LHR 12:05
      8h 35m
      IAD 15:40
      London - Washington D.C. | Wed, Dec 16 | United Airlines
      CAD 1,025 CAD 1,192
      14% off
      14% off
      CAD 1,192 CAD 1,025
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Thu, Nov 19 | Scandinavian Airlines
      LHR 10:20
      11h 55m
      IAD 17:15
      London - Washington D.C. | Thu, Nov 26 | Scandinavian Airlines
      CAD 747 CAD 1,192
      37% off
      37% off
      CAD 1,192 CAD 747
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Thu, Nov 12 | Scandinavian Airlines
      LHR 10:20
      11h 55m
      IAD 17:15
      London - Washington D.C. | Thu, Nov 19 | Scandinavian Airlines
      CAD 762
      36% off
      CAD 1,192 CAD 762
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Fri, Nov 20 | Scandinavian Airlines
      LHR 10:20
      11h 55m
      IAD 17:15
      London - Washington D.C. | Fri, Nov 27 | Scandinavian Airlines
      CAD 765
      36% off
      CAD 1,192 CAD 765
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Fri, Nov 13 | Scandinavian Airlines
      LHR 10:20
      11h 55m
      IAD 17:15
      London - Washington D.C. | Tue, Nov 17 | Scandinavian Airlines
      CAD 772
      35% off
      CAD 1,192 CAD 772
    • IAD 21:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Thu, Nov 5 | Scandinavian Airlines
      LHR 10:20
      11h 55m
      IAD 17:15
      London - Washington D.C. | Thu, Nov 12 | Scandinavian Airlines
      CAD 772
      35% off
      CAD 1,192 CAD 772
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Tue, Nov 17 | Scandinavian Airlines
      LHR 10:20
      13h 30m
      IAD 18:50
      London - Washington D.C. | Sun, Nov 22 | Scandinavian Airlines
      CAD 773
      35% off
      CAD 1,192 CAD 773
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Sun, Nov 15 | Scandinavian Airlines
      LHR 19:30
      28h 20m
      IAD 18:50
      London - Washington D.C. | Sat, Nov 21 | Scandinavian Airlines
      CAD 773
      35% off
      CAD 1,192 CAD 773
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Tue, Oct 20 | Normal Airline
      LON 15:00
      6h
      Direct
      WAS 16:00
      London - Washington D.C. | Thu, Oct 22 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest
      IAD 20:40
      18h 50m
      1 stop
      LHR 19:30
      Washington D.C. - London | Mon, Nov 2 | Icelandair
      CAD 408 CAD 533
      23% off
      23% off
      CAD 533 CAD 408
    • Cheapest
      IAD 19:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Mon, Nov 9 | Icelandair
      CAD 408 CAD 533
      23% off
      23% off
      CAD 533 CAD 408
    • Cheapest
      IAD 20:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Sun, Nov 8 | Icelandair
      CAD 408 CAD 533
      23% off
      23% off
      CAD 533 CAD 408
    • Cheapest
      IAD 20:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Sun, Oct 25 | Icelandair
      CAD 408
      64% off
      CAD 1,131 CAD 408
    • IAD 23:20
      16h
      1 stop
      LHR 20:20
      Washington D.C. - London | Mon, Oct 19 | Icelandair
      CAD 409
      23% off
      CAD 533 CAD 409
    • IAD 20:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Fri, Nov 6 | Icelandair
      CAD 409
      23% off
      CAD 533 CAD 409
    • IAD 20:30
      10h 25m
      1 stop
      LHR 11:55
      Washington D.C. - London | Tue, Oct 27 | Icelandair
      CAD 410
      23% off
      CAD 533 CAD 410
    • IAD 19:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Mon, Nov 23 | Icelandair
      CAD 410
      23% off
      CAD 533 CAD 410
    • IAD 20:30
      18h 50m
      1 stop
      LHR 20:20
      Washington D.C. - London | Fri, Oct 23 | Icelandair
      CAD 410
      23% off
      CAD 533 CAD 410
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Tue, Oct 20 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      IAD 18:20
      7h 20m
      Direct
      LHR 06:40
      Washington D.C. - London | Tue, Dec 29 | United Airlines
      CAD 451 CAD 821
      45% off
      45% off
      CAD 821 CAD 451
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Sun, Nov 8 | Virgin Atlantic
      CAD 456 CAD 821
      44% off
      44% off
      CAD 821 CAD 456
    • IAD 20:45
      7h 25m
      Direct
      LHR 09:10
      Washington D.C. - London | Thu, Jan 7 | Virgin Atlantic
      CAD 533 CAD 821
      35% off
      35% off
      CAD 821 CAD 533
    • IAD 22:15
      7h 35m
      Direct
      LHR 10:50
      Washington D.C. - London | Thu, Dec 10 | United Airlines
      CAD 552
      33% off
      CAD 821 CAD 552
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Tue, Nov 3 | Virgin Atlantic
      CAD 653
      20% off
      CAD 821 CAD 653
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Tue, Nov 10 | Virgin Atlantic
      CAD 662
      19% off
      CAD 821 CAD 662
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Mon, Nov 9 | Virgin Atlantic
      CAD 663
      19% off
      CAD 821 CAD 663
    • IAD 19:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Sun, Oct 25 | Virgin Atlantic
      CAD 663
      19% off
      CAD 821 CAD 663
    • IAD 22:15
      7h 35m
      Direct
      LHR 10:50
      Washington D.C. - London | Wed, Nov 11 | United Airlines
      CAD 677
      18% off
      CAD 821 CAD 677
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Tue, Oct 20 | Normal Airline
      Find more flights
      Find more flights
    • IAD 19:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Fri, Oct 30 | Iberia
      CAD 806 CAD 1,317
      39% off
      39% off
      CAD 1,317 CAD 806
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Tue, Dec 1 | American Airlines
      CAD 862 CAD 1,317
      35% off
      35% off
      CAD 1,317 CAD 862
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Mon, Nov 30 | Iberia
      CAD 716 CAD 1,317
      46% off
      46% off
      CAD 1,317 CAD 716
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Sun, Nov 15 | British Airways
      CAD 709
      46% off
      CAD 1,317 CAD 709
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Sun, Nov 8 | Iberia
      CAD 474
      64% off
      CAD 1,317 CAD 474
    • IAD 19:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Sat, Oct 31 | British Airways
      CAD 797
      39% off
      CAD 1,317 CAD 797
    • IAD 19:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Tue, Oct 27 | Iberia
      CAD 994
      25% off
      CAD 1,317 CAD 994
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Tue, Dec 29 | American Airlines
      CAD 606
      54% off
      CAD 1,317 CAD 606
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Mon, Nov 2 | Iberia
      CAD 719
      45% off
      CAD 1,317 CAD 719
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Tue, Oct 20 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      IAD 19:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Sun, Oct 25 | Virgin Atlantic
      CAD 663 CAD 1,131
      41% off
      41% off
      CAD 1,131 CAD 663
    • IAD 19:20
      7h 20m
      Direct
      LHR 06:40
      Washington D.C. - London | Sun, Oct 25 | United Airlines
      CAD 680 CAD 1,131
      40% off
      40% off
      CAD 1,131 CAD 680
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Tue, Oct 20 | Virgin Atlantic
      CAD 682 CAD 1,131
      40% off
      40% off
      CAD 1,131 CAD 682
    • IAD 22:25
      7h 25m
      Direct
      LHR 10:50
      Washington D.C. - London | Tue, Oct 20 | Iberia
      CAD 705
      38% off
      CAD 1,131 CAD 705
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Mon, Oct 19 | Virgin Atlantic
      CAD 726
      36% off
      CAD 1,131 CAD 726
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Wed, Oct 21 | Virgin Atlantic
      CAD 727
      36% off
      CAD 1,131 CAD 727
    • IAD 23:20
      7h 35m
      Direct
      LHR 10:55
      Washington D.C. - London | Sat, Oct 24 | Virgin Atlantic
      CAD 800
      28% off
      CAD 1,131 CAD 800
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Fri, Oct 23 | Virgin Atlantic
      CAD 801
      28% off
      CAD 1,131 CAD 801
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Thu, Oct 22 | Virgin Atlantic
      CAD 801
      28% off
      CAD 1,131 CAD 801
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Tue, Oct 20 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      IAD 18:20
      7h 20m
      Direct
      LHR 06:40
      Washington D.C. - London | Tue, Dec 29 | United Airlines
      CAD 451 CAD 821
      45% off
      45% off
      CAD 821 CAD 451
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Sun, Nov 8 | Virgin Atlantic
      CAD 456 CAD 821
      44% off
      44% off
      CAD 821 CAD 456
    • IAD 20:45
      7h 25m
      Direct
      LHR 09:10
      Washington D.C. - London | Thu, Jan 7 | Virgin Atlantic
      CAD 533 CAD 821
      35% off
      35% off
      CAD 821 CAD 533
    • IAD 22:15
      7h 35m
      Direct
      LHR 10:50
      Washington D.C. - London | Thu, Dec 10 | United Airlines
      CAD 552
      33% off
      CAD 821 CAD 552
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Tue, Nov 3 | Virgin Atlantic
      CAD 653
      20% off
      CAD 821 CAD 653
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Tue, Nov 10 | Virgin Atlantic
      CAD 662
      19% off
      CAD 821 CAD 662
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Mon, Nov 9 | Virgin Atlantic
      CAD 663
      19% off
      CAD 821 CAD 663
    • IAD 19:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Sun, Oct 25 | Virgin Atlantic
      CAD 663
      19% off
      CAD 821 CAD 663
    • IAD 22:15
      7h 35m
      Direct
      LHR 10:50
      Washington D.C. - London | Wed, Nov 11 | United Airlines
      CAD 677
      18% off
      CAD 821 CAD 677
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Tue, Oct 20 | Normal Airline
      Find more flights
      Find more flights

Displayed flight fares from Washington D.C. to London are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

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 October, with an average price of CAD 734. It is best to avoid June, when the average price can reach CAD 1,415.

CAD 1,415
CAD 1,075
CAD 734
CAD 394
  • CAD 734
    Oct
  • CAD 747
    Nov
  • CAD 975
    Dec
  • CAD 762
    Jan
  • CAD 763
    Feb
  • CAD 853
    Mar
  • CAD 901
    Apr
  • CAD 1,123
    May
  • CAD 1,415
    Jun
  • CAD 804
    Jul
  • CAD 800
    Aug
  • CAD 756
    Sep

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 Sunday, with average prices usually lower than other days. Avoid departing on Saturday as prices are typically highest on that day.

CAD 1,047
CAD 867
CAD 686
CAD 506
    Cheapest
  • CAD 934
    Mon
  • CAD 823
    Tue
  • CAD 903
    Wed
  • CAD 862
    Thu
  • CAD 938
    Fri
  • CAD 1,047
    Sat
  • CAD 686
    Sun

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

The cheapest airline flying from Dulles International Airport to Heathrow Airport is Icelandair (from CAD 398) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Icelandair
From CAD 398
ITA Airways
From CAD 433
Virgin Atlantic
From CAD 447
United Airlines
From CAD 449
Air Canada
From CAD 450
Delta Air Lines
From CAD 458
American Airlines
From CAD 473
Lufthansa
From CAD 474
Iberia
From CAD 474
British Airways
From CAD 475

Find more flights and airlines

What is the 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. VS022

    Dulles International Airport

    22:05

    IAD

    7h 35m

    10:40

    LHR

    S M T W T F S
    Search

  2. DL5982

    Dulles International Airport

    22:35

    IAD

    7h 25m

    11:00

    LHR

    S M T W T F S
    Search

  3. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M - W T F -
    Search

  4. FI450

    Keflavík International Airport

    07:40

    KEF

    3h 15m

    Direct

    11:55

    LHR

    S M T W T F S

  5. UA3539

    Dulles International Airport

    13:20

    IAD

    1h 42m

    Direct

    15:02

    YUL

    S M T W T F S
    Search

  6. AC864

    Montréal-Pierre Elliott Trudeau International Airport

    18:40

    YUL

    6h 50m

    Direct

    06:30

    LHR

    S M T W T F S

  7. VS4372

    Dulles International Airport

    10:05

    IAD

    1h 57m

    Direct

    12:02

    ATL

    S M T W T F S
    Search

  8. VS104

    Hartsfield–Jackson Atlanta International Airport

    18:30

    ATL

    7h 55m

    Direct

    06:25

    LHR

    S M T W T F S

  9. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M - W T F -
    Search

  10. FI204

    Keflavík International Airport

    07:40

    KEF

    3h 15m

    Direct

    12:55

    CPH

    S M T W T F S

  11. SK505

    Copenhagen Airport

    15:00

    CPH

    2h

    Direct

    16:00

    LHR

    S M T W T F S

  12. AC8724

    Dulles International Airport

    09:55

    IAD

    1h 38m

    Direct

    11:33

    YUL

    S M T W T F S
    Search

  13. AC864

    Montréal-Pierre Elliott Trudeau International Airport

    18:40

    YUL

    6h 50m

    Direct

    06:30

    LHR

    S M T W T F S

  14. AZ619

    Dulles International Airport

    16:30

    IAD

    8h 45m

    Direct

    07:15

    FCO

    - M - W - F S
    Search

  15. AZ204

    Leonardo da Vinci–Fiumicino Airport

    13:50

    FCO

    2h 50m

    Direct

    15:40

    LHR

    S M T W T F S

  16. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M - W T F -
    Search

  17. FI454

    Keflavík International Airport

    16:10

    KEF

    3h 10m

    Direct

    20:20

    LHR

    S M T W T F S

  18. UA3602

    Dulles International Airport

    17:50

    IAD

    1h 58m

    Direct

    19:48

    YUL

    S M T W T F S
    Search

  19. UA8296

    Montréal-Pierre Elliott Trudeau International Airport

    18:40

    YUL

    6h 50m

    Direct

    06:30

    LHR

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

About Dulles International Airport and Heathrow Airport

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

Flight distance 5,907.82km
Cheapest one-way ticket price CAD 408
Cheapest return ticket price CAD 747

FAQs for Dulles International Airport to Heathrow Airport Flights

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

    Dulles International Airport to Heathrow Airport takes about 6 hours 33 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 15 daily flights from Dulles International Airport (IAD) to Heathrow Airport (LHR).
  • The earliest flight from Dulles International Airport to Heathrow Airport departs at 17:45, and the last departs at 22:25, with about 6 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Dulles International Airport (IAD) to Heathrow Airport (LHR) is quite popular. Without considering departure times or holidays, tickets cost around CAD 839 in December, 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.
  • One-way flights from Dulles International Airport to Heathrow Airport currently start from CAD 408, and round-trip fares start from CAD 747. The current lowest fare is a Icelandair flight departing on Mon, Nov 2; prices may vary depending on availability.
  • Yes. British Airways, United Airlines and Virgin Atlantic operate direct flights from Dulles International Airport to Heathrow Airport, with an average flight time of 6 hours 35 minutes, and around 41 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 Dulles International Airport to Heathrow Airport is CAD 776. Prices may vary depending on the departure date, airline, and availability.
  • Dulles International Airport to Heathrow Airport operates around 41 weekly flights, mainly by British Airways, United Airlines and Virgin Atlantic. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Dulles International Airport and Heathrow 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.

Find Cheap Flights with Trip.com

Note: Prices shown on this page are estimated lowest price 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 prices (incl. taxes, fuel surcharge, 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 were updated within the last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled 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 check the customer support pages.