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

LHR — WAS
14 Aug — 21 Aug1
1 adult
1 adult, Economy, 0 bags

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 15 July 2026.

Wed 26/812:35
LHR
-
IAD
Nonstop8h 20m
British Airways
Sat 5/917:45
IAD
-
LHR
Nonstop7h 35m
British Airways
Deal found 11/7£496
Wed 5/812:35
LHR
-
IAD
Nonstop8h 20m
British Airways
Sun 9/817:45
IAD
-
LHR
Nonstop7h 35m
British Airways
Deal found 14/7£496
Wed 26/817:05
LHR
-
IAD
Nonstop8h 15m
British Airways
Thu 3/917:45
IAD
-
LHR
Nonstop7h 35m
British Airways
Deal found 11/7£497

  • How do most travelers feel about British Airways?

    When planning your LHR-WAS trip, keep in mind that British Airways is typically rated 6.7/10. This rating comes from 8,116 reviews by Cheapflights users who have traveled with British Airways.

  • Can I get a flight from London Heathrow Airport to Washington, D.C. on British Airways for under £598?

    Cheapflights currently has 30 LHR-WAS flights for under £598. Flights to Washington, D.C. will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.

British Airways flights from Heathrow to Washington, D.C. in 2026

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 15 July 2026.

One-way from

£330

Return from

£477

Popular in

July

Cheapest in

January

Average price (all airlines)

£595
British Airways
  • British Airways
  • 23/10
  • Nonstop
  • 8h 25m total
  • London to Washington, D.C.
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British Airways
  • British Airways
  • 29/9-4/10
  • 1 total stop
  • 19h 50m total
  • London to Washington, D.C.
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Highest demand for flights from London Heathrow to Washington, D.C.; 8% potential price increase.
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Best time to find cheap flights from London Heathrow to Washington, D.C.; 1% 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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Which month is the cheapest to fly Economy class from London Heathrow Airport to Washington, D.C.?

For Economy class flights, the cheapest month to fly this route is September. The most expensive months are December and August.

Weekly British Airways flight availability from London Heathrow Airport to Washington, D.C.

The most British Airways flights from LHR to WAS are scheduled on a Monday (3 on average). You will have fewer British Airways flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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).

When is the best time to book a flight to Washington, D.C. with British Airways?

The best time to book a flight to Washington, D.C. with British Airways is 57 days before departure. On average, fares are higher if you book 2 days before departure.

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.

Browse thousands of different options on Cheapflights for your next trip

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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 15 July 2026.
Virgin Atlantic flights from London Heathrow to Washington, D.C.
Finnair 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 15 July 2026.
British Airways
6.7
Okay
8,115 reviews
Check prices
Overview

Boarding

6.9

Crew

7.7

Comfort

6.8

Entertainment

6.5

Food

6.4

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