How do most travelers feel about British Airways?

British Airways has received a 6.7/10 rating from 8,028 Cheapflights user reviews. If you wish to plan your next trip from London Heathrow Airport to Washington, D.C. Dulles Intl Airport with British Airways, enter your preferred travel dates above!

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

Currently, the most affordable month to book a British Airways flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport in March, with an average price of £469. Conversely, traveling with British Airways from London Heathrow Airport to Washington, D.C. Dulles Intl Airport in August will be the most expensive, with an average cost of £643. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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

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

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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).

£407+ British Airways Flights from Heathrow to Dulles Intl

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

Booking with British Airways 87 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. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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.

Find British Airways flight deals from Heathrow to Dulles Intl

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Cheapest British Airways flights from Heathrow to Dulles Intl
Explore the most affordable British Airways flight options available from Heathrow to Dulles Intl. Find the lowest fares with prices last updated on 6 June 2026.

Tue 23/613:25

LHR

IAD

1 stop11h 00m

British Airways

Sat 27/620:22

IAD

LHR

1 stop29h 33m

British Airways

Deal found 6/6£500

Wed 17/612:00

LHR

IAD

1 stop12h 33m

British Airways

Sat 4/708:50

IAD

LHR

1 stop17h 05m

British Airways

Deal found 3/6£501

Thu 18/620:00

LHR

IAD

1 stop24h 30m

British Airways

Wed 8/717:00

IAD

LHR

1 stop18h 20m

British Airways

Deal found 5/6£501

How do most travelers feel about British Airways?
British Airways has received a 6.7/10 rating from 8,028 Cheapflights user reviews. If you wish to plan your next trip from London Heathrow Airport to Washington, D.C. Dulles Intl Airport with British Airways, enter your preferred travel dates above!
Can I get a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport on British Airways for under £597?
British Airways offers 9 flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport for under £597. Prices vary by date and time. To see all prices and select your dates, click here.

British Airways flights from Heathrow to Dulles Intl in 2026

One-way from	£407
Return from	£498
Popular in	July
Cheapest in	February
Average price (all airlines)	£593

British Airways
26/7
Nonstop
8h 20m total
London to Washington, D.C.

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British Airways
15/7-5/8
2 total stops
21h 59m total
London to Washington, D.C.

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Highest demand for flights from London Heathrow to Washington, D.C. Dulles Intl; 9% potential price increase.

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Best time to find cheap flights from London Heathrow to Washington, D.C. Dulles Intl; 1% potential price drop.

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Average price for all London Heathrow to Washington, D.C. Dulles Intl flights (one-way and round-trip).

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

The best time to book a flight to Washington, D.C. Dulles Intl Airport with British Airways is 87 days before departure. On average, fares are higher if you book 1 day before departure.

Which month is the cheapest to fly Economy class from London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

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

Best time to book a flight from Heathrow to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Heathrow with our price prediction graph.

LHR-IAD

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

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.

Find British Airways flight deals from Heathrow to Dulles Intl

Cheapest British Airways flights from Heathrow to Dulles IntlExplore the most affordable British Airways flight options available from Heathrow to Dulles Intl. Find the lowest fares with prices last updated on 6 June 2026.

Explore the most affordable British Airways flight options available from Heathrow to Dulles Intl. Find the lowest fares with prices last updated on 6 June 2026.

Best British Airways flights from Heathrow to Dulles IntlDiscover carefully curated British Airways flight deals from Heathrow to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 June 2026.

Discover carefully curated British Airways flight deals from Heathrow to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 June 2026.

Direct British Airways flights from Heathrow to Dulles IntlExplore direct British Airways flight options from Heathrow to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 June 2026.

Explore direct British Airways flight options from Heathrow to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 June 2026.

Last-minute British Airways flights from Heathrow to Dulles IntlDiscover last-minute British Airways flight deals from Heathrow to Dulles Intl. Data last updated 6 June 2026 and is based on user searches.

Discover last-minute British Airways flight deals from Heathrow to Dulles Intl. Data last updated 6 June 2026 and is based on user searches.

One-way British Airways flights to Dulles IntlSearch for one-way British Airways flight options to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 6 June 2026.

Search for one-way British Airways flight options to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 6 June 2026.

How do most travelers feel about British Airways?

Can I get a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport on British Airways for under £597?

British Airways flights from Heathrow to Dulles Intl in 2026

Find detailed information about British Airways flights from Heathrow to Dulles Intl. Explore the options provided by British Airways to plan your journey from Heathrow to Dulles Intl. Data last updated 6 June 2026.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

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

Which month is the cheapest to fly Economy class from London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

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

Rainfall in Dulles Intl by month

Temperature in Dulles Intl by month

Best time to book a flight from Heathrow to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Heathrow with our price prediction graph.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Heathrow to Dulles Intl on another airline

Consider alternative airlines that service the Dulles Intl area. Flight routes are based on user searches made on Cheapflights and were last updated on 6 June 2026.

Other British Airways flights from Heathrow

Browse through other British Airways flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 6 June 2026.

Complete your trip

Complete your trip to Dulles Intl by adding a car hire and/or hotel booking to your travel itinerary.

Other airlines servicing Heathrow and Dulles Intl

Choose from other airlines serving Heathrow and Dulles Intl.

Other popular destinations in North America

If Dulles Intl is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on 6 June 2026.

Popular flights with British Airways

Browse through some of the most popular routes that British Airways offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 6 June 2026.

See what others are saying about British Airways

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Cheapest British Airways flights from Heathrow to Dulles Intl
Explore the most affordable British Airways flight options available from Heathrow to Dulles Intl. Find the lowest fares with prices last updated on 6 June 2026.

Best British Airways flights from Heathrow to Dulles Intl
Discover carefully curated British Airways flight deals from Heathrow to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 June 2026.

Direct British Airways flights from Heathrow to Dulles Intl
Explore direct British Airways flight options from Heathrow to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 June 2026.

Last-minute British Airways flights from Heathrow to Dulles Intl
Discover last-minute British Airways flight deals from Heathrow to Dulles Intl. Data last updated 6 June 2026 and is based on user searches.

One-way British Airways flights to Dulles Intl
Search for one-way British Airways flight options to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 6 June 2026.