Cheap Flights from London to Washington D.C.

Frequently Asked Questions

• Which airlines offer direct flights from London to Washington D.C.?

  At the moment, you can catch a nonstop flight from London to Washington D.C. with the following airlines, including: Virgin Atlantic Norse Atlantic Airways British Airways Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from London to Washington D.C.?

  It takes about 8 hours 21 minutes to fly from London to Washington D.C..

• When is the best time to book flights from London to Washington D.C.?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Washington D.C. is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from London to Washington D.C.?

  Based on Trip.com data in the past 4 weeks, there is 19 flight per week flying from London to Washington D.C.. You can check the weekly schedule for popular airlines on this route below: British Airways: S/M/T/W/T/F/S -- BA217 (12:29)

• When are flight tickets from London (LON) to Washington D.C. (WAS) the cheapest?

  The cheapest months to fly from London to Washington D.C. is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from London to Washington D.C. on?

  After crunching the numbers on our November flight calendar, it's currently cheapest to fly from London to Washington D.C. on November 24, 2025 with Icelandair, with prices starting at US$449.

• Which airports can I fly to for Washington D.C. from London?

  You can land at any one of the following hubs in Washington D.C., with Heathrow Airport to Dulles International Airport (LHR-IAD) is by far the most common option on this route: Ronald Reagan Washington National Airport (DCA) Dulles International Airport (IAD).

• Is there any time difference between London and Washington D.C.?

  The time difference between Washington D.C. and London is 5h.

• How do I change or cancel my ticket from London to Washington D.C.?

  Tickets can only be changed or canceled if permitted by airline policy. 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. However, 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.