Flight Routes from London Heathrow to Washington DC

Compare cheap outbound and return flights from London Heathrow (LHR) to Washington DC (IAD) and find the best offer from numerous airlines and travel agencies.

Trip type
Fastest outbound flight
Fastest inbound flight
non-stop flights
52x / week
Flight distance
5,908 km
Time difference

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 flightsLHR–IAD · 15 of 15
fromto
dep.arr.
durationstopovers
  1. September 13 – 19, 2026
  2. September 20 – 26, 2026
  3. Sep 27 – Oct 3, 2026
    1. LHRIAD
      1 stopover
      1. Austrian Airlines
    2. LHRIAD
      1 stopover
      1. Lufthansa
    3. LHRIAD
      1 stopover
      1. Aer Lingus Irish Airlines
    4. LHRIAD
      1 stopover
      1. Lufthansa
    5. LHRIAD
      1 stopover
      1. Lufthansa
    6. LHRIAD
      1 stopover
      1. Aer Lingus Irish Airlines
    7. LHRIAD
      1 stopover
      1. Aer Lingus Irish Airlines
    8. LHRIAD
      nonstop
      1. United Airlines
    9. LHRIAD
      nonstop
      1. British Airways
    10. LHRIAD
      nonstop
      1. British Airways
    11. LHRIAD
      nonstop
      1. British Airways
    12. LHRIAD
      nonstop
      1. United Airlines
    13. LHRIAD
      nonstop
      1. United Airlines
    14. LHRIAD
      nonstop
      1. British Airways
    15. LHRIAD
      nonstop
      1. Virgin Atlantic Airways

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

      Favorite airline: Aer Lingus
      Flight tickets on the route London Heathrow – Washington DC are most frequently booked with Aer Lingus.
      Aer Lingus
      26 %
      SAS
      25 %
      TAP Portugal
      21 %
      Cheapest weekday: Thursday
      The cheapest flights on this route are operated on Thursday.
      Direct flights are more expensive
      Flights with a stopover are on average $270.00 cheaper than direct flights.
      non stop flight
      1 stop
      08h 05min
      24h 35min
      $695
      $425
      Favourite connection: via Dublin
      Flights with a stopover in Dublin are the most popular connection for this route.
      Route
      bookings
      1 stopover Dublin
      14h 20min, from $547
      26 %
      1 stopover Copenhagen
      23h 55min, from $480
      25 %
      1 stopover Lisbon
      24h 35min, from $425
      21 %

      Important flight information

      Discover more flights around London Heathrow and Washington DC

      Departure airport Airport London Heathrow (LHR)
      Departure country Flights from United Kingdom
      Arrival airport Airport Washington DC - Dulles International Airport, DC (IAD)
      Destination country Flights to United States
      Departure country - Arrival airport United Kingdom - Washington DC - Dulles International Airport, DC
      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
      Flight destinations with a similar price