Flight deals from London to Washington D.C.

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • Round-trip
  • One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

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  • 20 27
  • May

    27 4
  • 4 11
  • 11 18
  • 18 25
  • Jun

    25 1
  • 1 8
  • 8 15
  • 15 22
  • 22 29
  • Jul

    29 6
  • 6 13
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

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

    Airlines adjust prices for flights from London to Washington D.C. based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much are flights from London (LON) to Washington D.C. (WAS) cost?

    According to Trip.com's data, the lowest price is around £959.
  • How long is the flight from London (LON) to Washington D.C. (WAS)?

    It takes about 8 hours 16 minutes to fly from London (LON) to Washington D.C. (WAS).
  • What are the most popular airlines that fly from London (LON) to Washington D.C. (WAS)?

    Airlines with flights from London (LON) to Washington D.C. (WAS): American Airlines, Delta Air Lines, Austrian Airlines, United Airlines, Lufthansa, KLM, Iberia, Virgin Atlantic, British Airways, Air France and Finnair.
  • How many airports in Washington D.C. (WAS)?

    There are 2 airport(s) in Washington D.C. (WAS): Ronald Reagan Washington National Airport and Dulles International Airport.

How to find a cheap flight from London to Washington D.C.

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from London to Washington D.C.. Book your flights at the right time and save more.
1
Be flexible with your travel dates to get the cheapest flight from London to Washington D.C..
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from London to Washington D.C. over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Wed, Apr 30, with one-way flights priced at just £2024.
2
Compare cheap flight deals from London to Washington D.C. across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from London to Washington D.C.. The cheapest airline for this route is British Airways.
3
Set up a Price Alert
By setting up a Price Alert for your journey from London to Washington D.C., you can easily keep an eye on ticket prices without having to check every day.
4
Don't miss out on cheap flight deals and promo codes from London to Washington D.C..
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
5
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
6
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from London to Washington D.C. and snag some exclusive deals just for you.

Flight Information from London to Washington D.C.

Cheapest one-way flight price £324
Cheapest return ticket price £504
Off-season travel month March
Peak season for travel January
Flight distance 5,896.82km
Average flight time 8 hours 16 minutes
Popular airline Air France

Flight from London to Washington, D.C. 

Washington, D.C. is the capital of the United States and was founded after the great American Revolution. It is the seat of several international organisations and the United States Federal Government. While Washington is famous for its software companies, lattes, music scene, and aeroplane manufacturing, it is home to many more. Washington has it all from memorials and monuments, eclectic neighbourhoods, local flavours, art, nightlife scenes, and the best shopping areas. It is home to various diverse events and is the perfect place for a family vacation, business trip, or weekend getaway.

Tip: Autumn is the best season to visit this beautiful city because of the changing leaves and crisp breezes.

Getting to Washington, D.C. 

Washington has 3 airports, namely the Washington Ronald Reagan, Washington Dulles, and Baltimore Washington International Airport. The list of direct flights to Washington is endless and is offered by so many airlines like American Airlines and British Airways. London- Washington flight bookings are hence easier because of the numerous cheap flights from London.

Tip: when travelling on London to Washington flights, you will reach the city in about 8 hours after your departure.

List of things to do in Washington 

There are so many district monuments, and amongst these, the Lincoln Memorial is one of the tourists’ favourites. Though many people visit this place during the day, it is definitely worth checking out at night because, after the lights and fewer crowds, it is captivating. For a relaxing and fun time, check out the Tidal Basin in D.C. It is a pond that is 2 miles long, and it serves as a beautiful backdrop. These are more special during the spring season when the cherry blossom trees bloom. For all the science-lovers and aviation enthusiasts, the Smithsonian National Air and Space Museum is a must-visit. The museum attracts millions of people every year and is the best place to visit with kids.

Tip: To avoid dense crowds, you can arrive at the Smithsonian National Air and Space Museum in the morning.

Where to Dine and Shop 

There is an array of dining and shopping experiences to choose from in Washington. Georgetown, known for its scenic views and historic homes, is a hub of over 500 stores and shops. There are many boutiques, antiques, and luxury retailers all around this area. The City Centre DC is the city’s newest experience for shopping featuring high-end brands and international designers. One of the most popular areas for dining is the Penn Quarter because the location is central and easy to access along with various tourist attractions. Visit the Chinatown for international cuisines ranging from an Asian-America Fusion, Latin American, and Italian.

Tip: For a blend of smooth Jazz and delicious cuisines, visit the U Street Corridor since it has a collection of restaurants with Jazz and night clubs.

When you have so many deals on flights and discounts on hotels, you can’t help but plan the perfect trip. With a work-class and quality travel service, you can experience the city inside and out with Trip.com.