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British Airways flights from London Heathrow Airport to Washington, D.C. (LHR - WAS)

LHR — WAS
21 Nov — 28 Nov1
1 adult
1 adult, Economy

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 Heathrow to Washington, D.C. in 2025

Find detailed information about British Airways flights from Heathrow to Washington, D.C.. Explore the options provided by British Airways to plan your journey from Heathrow to Washington, D.C.. Data last updated 22 October 2025.

One-way from

£403

Return from

£543

Popular in

July

Cheapest in

September

Average price (all airlines)

£573
British Airways
  • British Airways
  • 24/2
  • 2 total stops
  • 21h 24m total
  • London to Washington, D.C.
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British Airways
  • British Airways
  • 15/1-19/1
  • Nonstop
  • 15h 45m total
  • London to Washington, D.C.
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Highest demand for flights from London Heathrow to Washington, D.C.; 10% potential price increase.
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Best time to find cheap flights from London Heathrow to Washington, D.C.; 2% potential price drop.
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Average price for all London Heathrow to Washington, D.C. flights (one-way and round-trip).
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Find British Airways flight deals from Heathrow to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest British Airways flights from Heathrow to Washington, D.C.
Explore the most affordable British Airways flight options available from Heathrow to Washington, D.C.. Find the lowest fares with prices last updated on 22 October 2025.

Wed 26/1116:25LHR - IAD
Nonstop8h 30mBritish Airways
Sat 6/1218:20IAD - LHR
Nonstop7h 10mBritish Airways
Deal found 20/10£547
Wed 22/1012:45LHR - IAD
Nonstop8h 10mBritish Airways
Fri 5/1218:20IAD - LHR
Nonstop7h 10mBritish Airways
Deal found 20/10£565
Wed 22/1017:00LHR - IAD
Nonstop8h 15mBritish Airways
Sun 26/1019:20IAD - LHR
Nonstop7h 10mBritish Airways
Deal found 19/10£576

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

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

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Washington, D.C.. Price data was last updated on 17 October 2025.

Booking with British Airways 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport 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 Heathrow Airport to Washington, D.C. with British Airways?

Currently, the most affordable month to book a British Airways flight from London Heathrow Airport to Washington, D.C. in February, with an average price of £403. Conversely, traveling with British Airways from London Heathrow Airport to Washington, D.C. in July will be the most expensive, with an average cost of £533. 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 Heathrow to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Heathrow 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.

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Fly from Heathrow 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 22 October 2025.
Virgin Atlantic flights from London Heathrow 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 22 October 2025.
British Airways
6.7
Okay
7,467 reviews
Check prices
Overview

Entertainment

6.4

Boarding

6.9

Comfort

6.7

Food

6.3

Crew

7.6

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