Cheap Flights from Washington D.C. to London from $239

Frequently Asked Questions

• What are the cheapest flights from Washington D.C. to London (WAS-LON)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as $239 on Cheapest nonstop routes (e.g. IAD to LGW on Wed, Oct 7), while Scandinavian Airlines offers Cheapest nonstop round-trips from $526 departing on Sat, Sep 12 and returning on Wed, Sep 16.

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

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

• How long does it take to fly from Washington D.C. (WAS) to London (LON) and what is the distance?

  It takes around 7 hours 28 minutes to fly from Washington D.C. (WAS) to London (LON).

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

  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.

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

  Based on Trip.com data in the past 4 weeks, there is 23 flight per week flying from Washington D.C. to London. You can check the weekly schedule for popular airlines on this route below: American Airlines: S/M/T/W/T/F/S -- AA6967 (18:21)

• How can I find the best deals on flights from Washington D.C. to London?

  To find best deals on flights from Washington D.C. to London, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Oct 7, with one-way flights priced at just $239.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Virgin Atlantic.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for London travel is around July.
  · Get exclusive promo codes for Trip.com app users.

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

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

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

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Washington D.C. to London on September 23, 2026 with Icelandair, with prices starting at $484.

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

  You can arrive at any of the following airports in London: Heathrow Airport (LHR), London Gatwick Airport (LGW), London City Airport (LCY), London Luton Airport (LTN), London Stansted Airport (STN), and London Southend Airport (SEN). Flights from Dulles International Airport to Heathrow Airport (IAD-LHR) are by far the most popular option for this route.

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

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

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

  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.

• What is the average cost of a one-way flight from Washington D.C. to London?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Washington D.C. to London is $530. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Washington D.C. to London?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Washington D.C. to London is $1,141. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Washington D.C. to London on Trip.com?

  Enter Washington D.C. and London, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Washington D.C. to London route?

  Jetblue Airwaysare the most popular budget airlines flying from Washington D.C. to London. Check baggage, seat and payment fees before comparing the final price.