Flight Routes from London Heathrow to Washington DC

Trip type

Our cheapest offers for flights from London Heathrow to Washington DC

Here you can compare cheap flights from London Heathrow (LHR) to Washington DC (IAD) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Washington DC. Prices and availability may change at any time.

Flight schedule from London Heathrow (LHR) to Washington DC (IAD)

Select a travel date in the flight schedule for the route from London Heathrow (LHR) to Washington DC (IAD) and compare affordable flight deals.

offers
Active filtersnone
Matching outbound flights14 of 14
fromto
dep.arr.
durationstopovers
  1. 3 – 9 August 2026
  2. 10 – 16 August 2026
  3. 17 – 23 August 2026
    1. LHRIAD
      1 stopover
      1. Lufthansa
    2. LHRIAD
      1 stopover
      1. Lufthansa
    3. LHRIAD
      1 stopover
      1. Aer Lingus Irish Airlines
    4. LHRIAD
      1 stopover
      1. Iberia
    5. LHRIAD
      1 stopover
      1. Aer Lingus Irish Airlines
    6. LHRIAD
      non-stop
      1. United Airlines
    7. LHRIAD
      non-stop
      1. British Airways
    8. LHRIAD
      1 stopover
      1. Icelandair
    9. LHRIAD
      non-stop
      1. British Airways
    10. LHRIAD
      non-stop
      1. British Airways
    11. LHRIAD
      non-stop
      1. United Airlines
    12. LHRIAD
      non-stop
      1. British Airways
    13. LHRIAD
      non-stop
      1. Virgin Atlantic Airways
    14. LHRIAD
      1 stopover
      1. Icelandair

      Tips and tricks to help you find cheap flights from London Heathrow to Washington DC

      Favourite airline: Aer Lingus
      The majority of passengers on the route London Heathrow – Washington DC prefer to fly with Aer Lingus.
      Aer Lingus
      32 %
      TAP Portugal
      25 %
      Icelandair
      18 %
      Cheapest weekday: Saturday
      Compared to other weekdays, flights are cheapest on Saturday.
      Stopover flights are the cheapest connection
      Flights with a stopover are on average £183.00 cheaper than direct flights.
      non stop flight
      1 stop
      08h 05min
      15h 25min
      £ 655
      £ 472
      Favourite connection: via Dublin
      Stopover flights on this route are especially popular via Dublin, making up 33 % of bookings.
      Route
      bookings
      1 stopover Dublin
      13h 55min, from £ 652
      33 %
      1 stopover Lisbon
      12h 25min, from £ 540
      26 %
      1 stopover Reykjavik-Keflavik International
      15h 25min, from £ 472
      19 %

      Important flight information

      Frequently Asked Questions (FAQ)

      Flight information: London Heathrow - Washington DC

      Outbound and return from £ 444,40
      Flight duration min. 08:20 / max. 08:45
      Return flight duration min. 07:00/ max. 07:25
      Distance 5908 km
      Flights per week 52
      Departure airport Airport London Heathrow (LHR)
      Arrival airport Airport Washington DC - Dulles International Airport, DC (IAD)
      Destination country Flights to United States
      City-Code - Arrival airport London - Washington DC - Dulles International Airport, DC
      Departure airport - Destination country London Heathrow - United States
      Departure airport - City-Code London Heathrow - Washington-DC
      Alternative routes to United States
      Alternative flights to Washington DC
      Popular destinations for onward travel
      Flight destinations with a similar price