$384 Cheap British Airways flights Washington (IAD) to London (LHR)

Apply the “Price (lowest to highest)” filter on Expedia to find cheap British Airways return flights from $496 from IAD to LHR. Affordable one-way fares from $384 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the most affordable months to jet off to London with British Airways. You could also find fantastic deals on one-way and round-trip tickets in February.

Snagging the best British Airways deals from IAD to LHR often comes down to booking at the right moment. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. As an added bonus, you can pocket 17% on average by buying your fare on a Sunday rather than a Friday, which is usually the most expensive day to book.* It’s a good idea to start searching for flights about one month before you plan to travel.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Yes, you can fly from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR) on one of British Airways’s 14 weekly direct flights. Use Expedia’s “Nonstop” and “Airline” filters to find the British Airways flight that’ll arrive at LHR at your preferred time.

It takes around 7h 11m to travel nonstop from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR) with British Airways.

British Airways operates the most flights from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR) on Thursday. With up to 2 daily departures, you’ll get the most flexibility and choice on this day.

The first British Airways flight from IAD to LHR departs at 6:00PM UTC-5, touching down at 6:15AM UTC+0. If you want to head off later, the last British Airways flight leaves IAD at 9:55PM UTC-5 and touches down at LHR at 10:05AM UTC+0. Flying earlier is generally a smart option as morning and mid-morning flights tend to experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Jump on a British Airways flight from Washington Dulles Intl. Airport (IAD) to London, and you’ll likely land at Heathrow Airport (LHR). This is the airline’s primary hub in this city.

For checked luggage, you can take 1 checked-in bag weighing up to 50 lb with dimensions not exceeding 29 inches x 15 inches x 16 inches. You can also travel with 2 cabin bags on board when flying standard economy from IAD to LHR with British Airways. This carry-on should weigh less than 50 lb and be no bigger than 19 inches x 9 inches x 17 inches. Exceeding these limits can mean additional fees, so read British Airways’s baggage allowance rules before you pack.

Jetting off from IAD to LHR with British Airways comes with a variety of perks, such as an excellent in-flight experience and top-tier customer service. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to redeem on select future travel purchases. That’s on top of the British Airways Executive Club points you can earn with British Airways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

British Airways typically flies Airbus A350-1000 planes for flights from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR). This airline also operates the Boeing 777 on this route. Remember that aircraft type can vary depending on operational demands, so the plane you catch could be different on the day.

You can usually cancel or change your flight, although there may be additional charges if you made your booking more than 24 hours ago. Need to keep your options open? Make use of our “No cancel fee” and “Changes included” filters to find flights that won’t penalize you if you have to adjust your plans. To make changes, visit “Trips,” select your flight and click on “Manage Booking” for further information.