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.
British Airways flights from Heathrow to Dulles Intl in 2025
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 29 April 2025.
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 29 April 2025.
Explore the most affordable British Airways flight options available from Heathrow to Dulles Intl. Find the lowest fares with prices last updated on 29 April 2025.
Travel insights for British Airways flights from Heathrow to Dulles Intl
Get recent, data-driven insights about British Airways flights from Heathrow to Dulles Intl including ideal travel times, pricing trends, and more.
How far ahead should I book a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport with British Airways?
Use this chart to determine the optimal time to book a return flight from Heathrow to Dulles Intl. Price data was last updated on 25 April 2025.
Booking with British Airways 42 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.
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 February, with an average price of £439. Conversely, traveling with British Airways from London Heathrow Airport to Washington, D.C. Dulles Intl Airport in July will be the most expensive, with an average cost of £604. 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 Monday (3 on average). You will have fewer British Airways flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).
Rainfall in Dulles Intl by month
Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.
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.
Temperature in Dulles Intl by month
Plan your trip to Dulles Intl by taking into account the average temperature totals by month.
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).
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.
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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 29 April 2025.
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 29 April 2025.
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