British Airways Flights from London to Washington D.C.

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

It takes about 8 hours 29 minutes to fly from London (LON) to Washington D.C. (WAS).

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.

Based on Trip.com data in the past 4 weeks, there is 31 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 (12:37) Aer Lingus: S/M/T/W/T/F/S -- EI8917 (12:37)

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

After crunching the numbers on our December flight calendar, it's currently cheapest to fly from London to Washington D.C. on December 10, 2025 with Icelandair, with prices starting at NZD 856.

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).

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

Tickets can only be changed or cancelled 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.