Cheap flight deals from London to Washington D.C. Starting at AED 1,575

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

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

When is the cheapest time to fly from London to Washington D.C.?

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights
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  • 23 30

  • Apr

    30 6
  • 6 13
  • 13 20
  • 20 27

  • May

    27 4
  • 4 11
  • 11 18
  • 18 25

  • Jun

    25 1
  • 1 8
  • 8 15
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • 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 lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from London (LON) to Washington D.C. (WAS) cost?

    According to Trip.com's data, the lowest price is around AED 4,717.

  • How long does it take to fly from London (LON) to Washington D.C. (WAS)?

    It takes about 8 hours 22 minutes to fly from London (LON) to Washington D.C. (WAS).

  • What time does the earliest flight from London to Washington D.C. depart?

    The earliest flight departs from London (LHR) at 08:00 and arrives in Washington D.C. (IAD) at 11:15.

  • What time does the latest flight from London to Washington D.C. depart?

    The latest flight departs from London (LHR) at 17:05 and arrives in Washington D.C. (IAD) at 20:15.

  • 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, United Airlines, Delta Air Lines, Austrian Airlines, Lufthansa, KLM, Iberia, Virgin Atlantic, British Airways, Air France and Finnair.

  • What's the most popular airline for non-stop flights from London (LON) to Washington D.C. (WAS)?

    Austrian Airlines operates 22 non-stop flights from London (LON) to Washington D.C. (WAS).

  • How many airports are there in Washington D.C. (WAS)?

    There are 2 airport(s) near 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
Being flexible with your dates to get the cheapest London to Washington D.C. ticket.
Tap "Date" on flight search bar to scan through the calender for London to Washington D.C. airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Sun, Mar 30 at AED 3535 for one-way flights.
2
Compare cheap London to Washington D.C. flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from London to Washington D.C.. The cheapest airline operating is British Airways.
3
Set up a Price Alert
By setting up a Price Alert for your London to Washington D.C. route, you can easily track the price of your airline tickets from without manually checking every day.
4
Don't miss cheap London to Washington D.C. flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
5
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
6
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from London to Washington D.C. to get exclusive deals for you.

Flight Info | London to Washington D.C.

Cheapest one-way flight price AED 1,575
Cheapest return ticket price AED 2,278
Off-season for travel February
Peak season for travel December
Flight distance 5,896.82 km
Average flight time 8 hours 22 minutes
Popular airline Air France

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