British Airways flights from London to Washington, D.C. Dulles Intl Airport (LON - IAD)
LON — IAD
15 Oct — 22 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Find British Airways flight deals from London to Dulles Intl
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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 15 September 2026.
Fri 18/914:00 -
Nonstop8h 25m
Mon 21/919:15 -
Nonstop7h 30m
Deal found 11/9£419
Sat 17/1008:50 -
1 stop11h 55m
Tue 17/1121:45 -
Nonstop7h 15m
Deal found 10/9£434
Mon 19/1008:50 -
1 stop11h 55m
Sat 31/1018:15 -
1 stop10h 50m
Deal found 15/9£439
Best British Airways flights from London to Dulles Intl
Discover carefully curated British Airways flight deals from London to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 September 2026.
Thu 8/1011:30 -
1 stop12h 20m
Thu 15/1017:15 -
1 stop9h 50m
Deal found 10/9£446
Wed 16/1216:25 -
Nonstop8h 30m
Wed 6/118:05 -
Nonstop7h 10m
Deal found 15/9£447
Wed 2/1216:25 -
Nonstop8h 30m
Sun 6/1218:05 -
Nonstop7h 10m
Deal found 10/9£448
Direct British Airways flights from London to Dulles Intl
Explore direct British Airways flight options from London to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 September 2026.
Fri 29/116:25 -
Nonstop8h 30m
Sun 31/121:45 -
Nonstop7h 15m
Deal found 15/9£415
Sat 14/1116:25 -
Nonstop8h 30m
Sun 22/1118:05 -
Nonstop7h 10m
Deal found 14/9£418
Thu 12/1112:15 -
Nonstop8h 25m
Mon 16/1118:05 -
Nonstop7h 10m
Deal found 13/9£419
Last-minute British Airways flights from London to Dulles Intl
Discover last-minute British Airways flight deals from London to Dulles Intl. Data last updated 15 September 2026 and is based on user searches.
Fri 18/914:00 -
Nonstop8h 25m
Mon 21/919:15 -
Nonstop7h 30m
Deal found 11/9£419
Sat 17/1008:50 -
1 stop11h 55m
Tue 17/1121:45 -
Nonstop7h 15m
Deal found 10/9£434
Mon 19/1008:50 -
1 stop11h 55m
Sat 31/1018:15 -
1 stop10h 50m
Deal found 15/9£439
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 15 September 2026.
Tue 9/212:15 -
Nonstop8h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£355
Sat 7/1112:15 -
Nonstop8h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£356
Tue 10/1111:45 -
1 stop12h 02m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/9£356
How do most travelers feel about British Airways?
When planning your LON-IAD trip, keep in mind that British Airways is typically rated 6.7/10. This rating comes from 8,221 reviews by Cheapflights users who have traveled with British Airways.
Can I get a flight from London to Washington, D.C. Dulles Intl Airport on British Airways for under £519?
Cheapflights currently has 20 LON-IAD flights for under £519. Flights to Washington, D.C. Dulles Intl Airport 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 London to Dulles Intl in 2026
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 15 September 2026.
Which month is the cheapest to fly Economy class from London to Washington, D.C. Dulles Intl Airport?
For Economy class flights, the cheapest month to fly this route is February. The most expensive months are December and November.
Weekly British Airways flight availability from London to Washington, D.C. Dulles Intl Airport
The most British Airways flights from LON to IAD are scheduled on a Monday (3 on average). You will have fewer British Airways flight options on Tuesday, which is when the least amount of flights are scheduled (2 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).
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 8 days before departure. On average, fares are higher if you book 3 days before departure.
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.
LON-IAD
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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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 15 September 2026.
Browse through other British Airways flights departing from London. Flight routes are based on user searches made on Cheapflights and were last updated on 15 September 2026.
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 15 September 2026.
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 15 September 2026.
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 September 2026.
We had an absolute nightmare experience with British Airways. Check in was bad. They “lost” our business class seats that I selected a long time ago. Our luggage almost didn’t make it on the plane in London to LAX. Flight attendant was rude!! Not that it should matter but she thought bc of the seat assignment issue we were “upgraded” and that’s we had no choice in meals. Not that the meals were any good anyway.
10.0
Wonderful|Jul 2026
Great 👍
10.0
Wonderful|Jul 2026
The smooth transition from one plane to another 👌
10.0
Wonderful|Jul 2026
The journey was great and smooth.
8.0
Very Good|Jul 2026
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