Find flights
Flight research
Deals
British Airways Reviews

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

LON — IAD
22 Nov — 29 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 London to Dulles Intl in 2025

Find detailed information about British Airways flights from London to Dulles Intl. Explore the options provided by British Airways to plan your journey from London to Dulles Intl. Data last updated 23 October 2025.

One-way from

£403

Return from

£543

Popular in

July

Cheapest in

September

Average price (all airlines)

£544
British Airways
  • British Airways
  • 24/2
  • 2 total stops
  • 21h 24m total
  • London to Washington, D.C.
Search Deals
British Airways
  • British Airways
  • 15/1-19/1
  • Nonstop
  • 15h 45m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights from London to Washington, D.C. Dulles Intl; 11% potential price increase.
Search Deals
Best time to find cheap flights from London to Washington, D.C. Dulles Intl; 1% potential price drop.
Search Deals
Average price for all London to Washington, D.C. Dulles Intl flights (one-way and round-trip).
Search Deals

Find British Airways flight deals from London to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest British Airways flights from London to Dulles Intl
Explore the most affordable British Airways flight options available from London to Dulles Intl. Find the lowest fares with prices last updated on 23 October 2025.

Wed 26/1116:25LHR - IAD
Nonstop8h 30mBritish Airways
Sat 6/1221:45IAD - LHR
Nonstop7h 15mBritish Airways
Deal found 22/10£564
Mon 27/1016:25LHR - IAD
Nonstop8h 30mBritish Airways
Fri 7/1117:35IAD - LHR
1 stop10h 40mBritish Airways
Deal found 22/10£581
Thu 23/1017:00LHR - IAD
Nonstop8h 15mBritish Airways
Thu 30/1019:20IAD - LHR
Nonstop7h 10mBritish Airways
Deal found 22/10£583

Travel insights for British Airways flights from London to Dulles Intl

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

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

Use this chart to determine the optimal time to book a return flight from London to Dulles Intl. Price data was last updated on 17 October 2025.

Booking with British Airways 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from London 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 to Washington, D.C. Dulles Intl Airport with British Airways?

Currently, the most affordable month to book a British Airways flight from London to Washington, D.C. Dulles Intl Airport in February, with an average price of £403. Conversely, traveling with British Airways from London to Washington, D.C. Dulles Intl Airport in July will be the most expensive, with an average cost of £575. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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 London to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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

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

Fly from London 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 23 October 2025.
Virgin Atlantic flights from London to Washington, D.C. Dulles Intl

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 23 October 2025.
British Airways
6.7
Okay
7,467 reviews
Check prices
Overview

Food

6.3

Comfort

6.7

Entertainment

6.4

Crew

7.6

Boarding

6.9

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.