United Airlines Flights from Washington D.C. to London

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

It takes about 7 hours 14 minutes to fly from Washington D.C. (WAS) to London (LON).

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Washington D.C. to London 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 30 flight per week flying from Washington D.C. to London. You can check the weekly schedule for popular airlines on this route below: Lufthansa: S/M/T/W/T/F/S -- LH9267 (22:38)

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

After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Washington D.C. to London on November 19, 2025 with Icelandair, with prices starting at £369.

You can land at any one of the following hubs in London, with Dulles International Airport to Heathrow Airport (IAD-LHR) is by far the most common option on this route: London City Airport (LCY) London Gatwick Airport (LGW) Heathrow Airport (LHR) London Luton Airport (LTN) London Southend Airport (SEN) London Stansted Airport (STN).

The time difference between London and Washington D.C. 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.