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British Airways flights from London to Washington, D.C. (LON - WAS)

LON — WAS
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights users flying from London to Washington, D.C. on British Airways typically fly into Washington, D.C. Dulles Intl and depart from London Heathrow. Select your dates above for pricing.

British Airways flights from London to Washington, D.C. in 2025

Find detailed information about British Airways flights from London to Washington, D.C.. Explore the options provided by British Airways to plan your journey from London to Washington, D.C.. Data last updated 6 November 2025.

One-way from

£407

Return from

£463

Popular in

July

Cheapest in

February

Average price (all airlines)

£516
British Airways
  • British Airways
  • 21/1
  • 1 total stop
  • 15h 04m total
  • London to Washington, D.C.
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British Airways
  • British Airways
  • 25/1-10/2
  • 1 total stop
  • 22h 30m total
  • London to Washington, D.C.
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Highest demand for flights from London to Washington, D.C.; 11% potential price increase.
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Best time to find cheap flights from London to Washington, D.C.; 2% potential price drop.
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Average price for all London to Washington, D.C. flights (one-way and round-trip).
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  • Can I get a flight from London to Washington, D.C. on British Airways for under £537?

    Cheapflights users have found 33 British Airways flights for under £537 on the LON-WAS route. Prices on flights to Washington, D.C. from London can vary based on many factors including dates. To look at price based on your preferred dates, click here.

  • Does British Airways service alternative airports for LON-WAS?

    When traveling from London to Washington, D.C., there are typically alternate options for departure airport, arrival airport, or both. When arriving in Washington, D.C., most people land at Washington, D.C. Dulles Intl, but that is not the only available airport that British Airways flies to. Many people choose to land at Baltimore/Washington depending on where there are traveling to in the area. If you are looking for a closer or different airport to depart from in London, British Airways also flies out of London Gatwick when traveling to Washington, D.C..

Find British Airways flight deals from London to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest British Airways flights from London to Washington, D.C.
Explore the most affordable British Airways flight options available from London to Washington, D.C.. Find the lowest fares with prices last updated on 6 November 2025.

Sat 6/1212:10LHR - IAD
Nonstop8h 25mBritish Airways
Sat 13/1218:20IAD - LHR
Nonstop7h 10mBritish Airways
Deal found 5/11£470
Wed 10/1212:10LHR - IAD
Nonstop8h 25mBritish Airways
Sun 14/1218:20IAD - LHR
Nonstop7h 10mBritish Airways
Deal found 5/11£472
Fri 12/1216:25LHR - IAD
Nonstop8h 30mBritish Airways
Mon 15/1218:20IAD - LHR
Nonstop7h 10mBritish Airways
Deal found 4/11£476

Travel insights for British Airways flights from London to Washington, D.C.

Get recent, data-driven insights about British Airways flights from London to Washington, D.C. including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London to Washington, D.C. with British Airways?

Use this chart to determine the optimal time to book a return flight from London to Washington, D.C.. Price data was last updated on 31 October 2025.

Booking with British Airways 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to Washington, D.C. with British Airways?

Currently, the most affordable month to book a British Airways flight from London to Washington, D.C. in February, with an average price of £413. Conversely, traveling with British Airways from London to Washington, D.C. in July will be the most expensive, with an average cost of £546. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Best time to book a flight from London to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Browse thousands of different options on Cheapflights for your next trip

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Fly from London to Washington, D.C. on another airline

Consider alternative airlines that service the Washington, D.C. area. Flight routes are based on user searches made on Cheapflights and were last updated on 6 November 2025.
Virgin Atlantic flights from London to Washington, D.C.
Finnair flights from London to Washington, D.C.

See what others are saying about British Airways

Read reviews and see what other travellers are saying about their experiences with British Airways. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing British Airways for your next flight. Reviews last updated 6 November 2025.
British Airways
6.7
Okay
7,496 reviews
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Overview

Food

6.3

Entertainment

6.4

Boarding

6.9

Crew

7.6

Comfort

6.7

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