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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 734. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      IAD 19:05
      7h 10m
      LHR 06:15
      Washington D.C. - London | Wed, Oct 28 | British Airways
      LHR 12:15
      8h 25m
      IAD 15:40
      London - Washington D.C. | Wed, Nov 4 | British Airways
      CAD 1,050 CAD 1,481
      28% off
      28% off
      CAD 1,481 CAD 1,050
    • IAD 19:05
      7h 10m
      LHR 06:15
      Washington D.C. - London | Tue, Oct 27 | British Airways
      LHR 16:25
      8h 30m
      IAD 19:55
      London - Washington D.C. | Tue, Nov 3 | British Airways
      CAD 1,051 CAD 1,481
      28% off
      28% off
      CAD 1,481 CAD 1,051
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Mon, Nov 16 | Scandinavian Airlines
      LHR 18:40
      27h 35m
      IAD 17:15
      London - Washington D.C. | Sun, Nov 22 | Scandinavian Airlines
      CAD 734 CAD 1,481
      50% off
      50% off
      CAD 1,481 CAD 734
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Wed, Nov 11 | Scandinavian Airlines
      LHR 10:20
      11h 55m
      IAD 17:15
      London - Washington D.C. | Wed, Nov 18 | Scandinavian Airlines
      CAD 747
      50% off
      CAD 1,481 CAD 747
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Sat, Dec 5 | Scandinavian Airlines
      LHR 06:40
      17h 10m
      IAD 18:50
      London - Washington D.C. | Sat, Dec 12 | Scandinavian Airlines
      CAD 760
      49% off
      CAD 1,481 CAD 760
    • IAD 20:30
      14h 30m
      LHR 16:00
      Washington D.C. - London | Wed, Nov 4 | Scandinavian Airlines
      LHR 10:20
      11h 55m
      IAD 17:15
      London - Washington D.C. | Wed, Nov 11 | Scandinavian Airlines
      CAD 762
      49% off
      CAD 1,481 CAD 762
    • 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 765
      48% off
      CAD 1,481 CAD 765
    • IAD 20:30
      16h 10m
      LHR 17:40
      Washington D.C. - London | Sat, Nov 14 | Scandinavian Airlines
      LHR 10:20
      13h 30m
      IAD 18:50
      London - Washington D.C. | Sat, Nov 21 | Scandinavian Airlines
      CAD 771
      48% off
      CAD 1,481 CAD 771
    • IAD 20:30
      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. | Mon, Nov 9 | Scandinavian Airlines
      CAD 772
      48% off
      CAD 1,481 CAD 772
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Mon, Oct 19 | Normal Airline
      LON 15:00
      6h
      Direct
      WAS 16:00
      London - Washington D.C. | Wed, Oct 21 | Normal Airline
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    • Cheapest
      IAD 20:40
      18h 50m
      1 stop
      LHR 19:30
      Washington D.C. - London | Sun, Oct 25 | Icelandair
      CAD 408 CAD 661
      38% off
      38% off
      CAD 661 CAD 408
    • Cheapest
      IAD 19:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Sun, Nov 1 | Icelandair
      CAD 408 CAD 661
      38% off
      38% off
      CAD 661 CAD 408
    • Cheapest
      IAD 20:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Sat, Oct 31 | Icelandair
      CAD 408 CAD 661
      38% off
      38% off
      CAD 661 CAD 408
    • Cheapest
      IAD 19:40
      18h 50m
      1 stop
      LHR 19:30
      Washington D.C. - London | Sat, Nov 28 | Icelandair
      CAD 408
      38% off
      CAD 661 CAD 408
    • IAD 20:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Thu, Oct 29 | Icelandair
      CAD 409
      38% off
      CAD 661 CAD 409
    • IAD 19:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Sun, Nov 15 | Icelandair
      CAD 410
      38% off
      CAD 661 CAD 410
    • IAD 19:40
      10h 10m
      1 stop
      LHR 10:50
      Washington D.C. - London | Tue, Nov 17 | Icelandair
      CAD 411
      38% off
      CAD 661 CAD 411
    • IAD 19:40
      18h 50m
      1 stop
      LHR 19:30
      Washington D.C. - London | Mon, Dec 7 | Icelandair
      CAD 421
      36% off
      CAD 661 CAD 421
    • IAD 16:30
      18h 10m
      1 stop
      LHR 15:40
      Washington D.C. - London | Tue, Nov 10 | ITA Airways
      CAD 422
      36% off
      CAD 661 CAD 422
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Mon, Oct 19 | Normal Airline
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    • Cheapest nonstop
      IAD 18:20
      7h 20m
      Direct
      LHR 06:40
      Washington D.C. - London | Tue, Dec 29 | United Airlines
      CAD 451 CAD 972
      54% off
      54% off
      CAD 972 CAD 451
    • IAD 20:45
      7h 25m
      Direct
      LHR 09:10
      Washington D.C. - London | Thu, Jan 7 | Virgin Atlantic
      CAD 535 CAD 972
      45% off
      45% off
      CAD 972 CAD 535
    • IAD 22:15
      7h 35m
      Direct
      LHR 10:50
      Washington D.C. - London | Thu, Dec 10 | United Airlines
      CAD 552 CAD 972
      43% off
      43% off
      CAD 972 CAD 552
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Mon, Nov 9 | Virgin Atlantic
      CAD 626
      36% off
      CAD 972 CAD 626
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Wed, Nov 4 | Virgin Atlantic
      CAD 634
      35% off
      CAD 972 CAD 634
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Tue, Nov 10 | Virgin Atlantic
      CAD 635
      35% off
      CAD 972 CAD 635
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Tue, Nov 3 | Virgin Atlantic
      CAD 653
      33% off
      CAD 972 CAD 653
    • IAD 19:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Wed, Oct 28 | Virgin Atlantic
      CAD 661
      32% off
      CAD 972 CAD 661
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Wed, Nov 11 | Virgin Atlantic
      CAD 661
      32% off
      CAD 972 CAD 661
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Mon, Oct 19 | Normal Airline
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    • Cheapest nonstop
      IAD 18:20
      7h 20m
      Direct
      LHR 06:40
      Washington D.C. - London | Tue, Dec 29 | United Airlines
      CAD 451 CAD 972
      54% off
      54% off
      CAD 972 CAD 451
    • IAD 20:45
      7h 25m
      Direct
      LHR 09:10
      Washington D.C. - London | Thu, Jan 7 | Virgin Atlantic
      CAD 535 CAD 972
      45% off
      45% off
      CAD 972 CAD 535
    • IAD 22:15
      7h 35m
      Direct
      LHR 10:50
      Washington D.C. - London | Thu, Dec 10 | United Airlines
      CAD 552 CAD 972
      43% off
      43% off
      CAD 972 CAD 552
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Mon, Nov 9 | Virgin Atlantic
      CAD 626
      36% off
      CAD 972 CAD 626
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Wed, Nov 4 | Virgin Atlantic
      CAD 634
      35% off
      CAD 972 CAD 634
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Tue, Nov 10 | Virgin Atlantic
      CAD 635
      35% off
      CAD 972 CAD 635
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Tue, Nov 3 | Virgin Atlantic
      CAD 653
      33% off
      CAD 972 CAD 653
    • IAD 19:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Wed, Oct 28 | Virgin Atlantic
      CAD 661
      32% off
      CAD 972 CAD 661
    • IAD 18:55
      7h 25m
      Direct
      LHR 07:20
      Washington D.C. - London | Wed, Nov 11 | Virgin Atlantic
      CAD 661
      32% off
      CAD 972 CAD 661
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Mon, Oct 19 | Normal Airline
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    • IAD 19:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Fri, Oct 30 | Iberia
      CAD 808 CAD 1,217
      34% off
      34% off
      CAD 1,217 CAD 808
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Tue, Dec 1 | British Airways
      CAD 733 CAD 1,217
      40% off
      40% off
      CAD 1,217 CAD 733
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Tue, Dec 1 | American Airlines
      CAD 855 CAD 1,217
      30% off
      30% off
      CAD 1,217 CAD 855
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Mon, Nov 30 | Iberia
      CAD 735
      40% off
      CAD 1,217 CAD 735
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Sun, Nov 15 | British Airways
      CAD 492
      60% off
      CAD 1,217 CAD 492
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Sun, Nov 8 | Iberia
      CAD 706
      42% off
      CAD 1,217 CAD 706
    • IAD 19:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Sat, Oct 31 | British Airways
      CAD 797
      35% off
      CAD 1,217 CAD 797
    • IAD 19:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Tue, Oct 27 | Iberia
      CAD 730
      40% off
      CAD 1,217 CAD 730
    • IAD 18:05
      7h 10m
      Direct
      LHR 06:15
      Washington D.C. - London | Tue, Dec 29 | American Airlines
      CAD 606
      50% off
      CAD 1,217 CAD 606
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Mon, Oct 19 | Normal Airline
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    • Cheapest nonstop
      IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Wed, Oct 21 | Virgin Atlantic
      CAD 675 CAD 1,316
      49% off
      49% off
      CAD 1,316 CAD 675
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Sun, Oct 18 | Virgin Atlantic
      CAD 676 CAD 1,316
      49% off
      49% off
      CAD 1,316 CAD 676
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Tue, Oct 20 | Virgin Atlantic
      CAD 682 CAD 1,316
      48% off
      48% off
      CAD 1,316 CAD 682
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Mon, Oct 19 | Virgin Atlantic
      CAD 683
      48% off
      CAD 1,316 CAD 683
    • IAD 22:25
      7h 25m
      Direct
      LHR 10:50
      Washington D.C. - London | Sun, Oct 18 | Iberia
      CAD 693
      47% off
      CAD 1,316 CAD 693
    • IAD 22:25
      7h 25m
      Direct
      LHR 10:50
      Washington D.C. - London | Tue, Oct 20 | Iberia
      CAD 703
      47% off
      CAD 1,316 CAD 703
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Fri, Oct 23 | Virgin Atlantic
      CAD 746
      43% off
      CAD 1,316 CAD 746
    • IAD 23:20
      7h 35m
      Direct
      LHR 10:55
      Washington D.C. - London | Sat, Oct 24 | Virgin Atlantic
      CAD 746
      43% off
      CAD 1,316 CAD 746
    • IAD 22:05
      7h 35m
      Direct
      LHR 10:40
      Washington D.C. - London | Thu, Oct 22 | Virgin Atlantic
      CAD 746
      43% off
      CAD 1,316 CAD 746
    • WAS 13:00
      17h 25m
      1 stop
      LON 14:00
      Washington D.C. - London | Mon, Oct 19 | Normal Airline
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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 408) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Icelandair
From CAD 408
ITA Airways
From CAD 422
Air Canada
From CAD 452
United Airlines
From CAD 455
Virgin Atlantic
From CAD 462
Delta Air Lines
From CAD 466
Aer Lingus
From CAD 471
Lufthansa
From CAD 478
British Airways
From CAD 481
Iberia
From CAD 487

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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. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M - W T F -
    Search

  2. FI450

    Keflavík International Airport

    07:40

    KEF

    3h 15m

    Direct

    11:55

    LHR

    S M T W T F S

  3. AZ619

    Dulles International Airport

    16:30

    IAD

    8h 45m

    Direct

    07:15

    FCO

    - M - W - F S
    Search

  4. AZ202

    Leonardo da Vinci–Fiumicino Airport

    07:50

    FCO

    2h 50m

    Direct

    09:40

    LHR

    S M T W T F S

  5. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M - W T F -
    Search

  6. FI204

    Keflavík International Airport

    07:40

    KEF

    3h 15m

    Direct

    12:55

    CPH

    S M T W T F S

  7. SK505

    Copenhagen Airport

    15:00

    CPH

    2h

    Direct

    16:00

    LHR

    S M T W T F S

  8. AC8724

    Dulles International Airport

    09:55

    IAD

    1h 38m

    Direct

    11:33

    YUL

    S M T W T F S
    Search

  9. AC864

    Montréal-Pierre Elliott Trudeau International Airport

    18:40

    YUL

    6h 50m

    Direct

    06:30

    LHR

    S M T W T F S

  10. AZ619

    Dulles International Airport

    16:30

    IAD

    8h 45m

    Direct

    07:15

    FCO

    - M - W - F S
    Search

  11. AZ204

    Leonardo da Vinci–Fiumicino Airport

    13:50

    FCO

    2h 50m

    Direct

    15:40

    LHR

    S M T W T F S

  12. FI644

    Dulles International Airport

    20:30

    IAD

    5h 55m

    Direct

    06:25

    KEF

    S M - W T F -
    Search

  13. FI454

    Keflavík International Airport

    16:10

    KEF

    3h 10m

    Direct

    20:20

    LHR

    S M T W T F S
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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 734

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 855 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 734. The current lowest fare is a Icelandair flight departing on Sun, Oct 25; 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 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.