$343 Cheap British Airways flights Boston (BOS) to London (LHR)

Set the “Price (lowest to highest)” filter on Expedia to look for cheap British Airways return flights from $469 from BOS to LHR. Affordable one-way tickets from $343 are also available.**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.

Search for round-trip or one-way flights to London in January or February. You could find cheaper fares with British Airways during these off-peak months.

Scoring the best British Airways deals from BOS 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 tickets on a Sunday rather than a Friday, which is usually the most expensive day to book.* It’s a good idea to start checking out flights about one month before you want 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.

British Airways has direct flights from Logan Intl. Airport (BOS) to Heathrow Airport (LHR), with 16 weekly departures. Simply use the “Nonstop” and “Airline” filters during your search on Expedia to find all direct British Airways flights to LHR.

From takeoff till touchdown, a direct British Airways flight from Logan Intl. Airport (BOS) to Heathrow Airport (LHR) takes approximately 6h 29m.

If it’s flexibility you’re after, Thursday offers the most choice for British Airways flights from Logan Intl. Airport (BOS) to Heathrow Airport (LHR). Take your pick of 3 different departures.

The first flight from BOS to LHR with British Airways leaves at 7:30AM UTC-5. You’ll touch down at 6:55PM UTC+0. The final British Airways flight of the day leaves at 10:00PM UTC-5 and arrives at 9:30AM UTC+0. With around 20% fewer cancellations for departures before noon, heading out early is generally the best choice.**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.

Take a British Airways flight from Logan Intl. Airport (BOS) to London, and you’ll most likely land at Heathrow Airport (LHR). This is the airline’s primary hub in this destination.

British Airways lets passengers bring 1 checked-in bag weighing up to 50 lb with maximum dimensions of 29 inches x 15 inches x 16 inches on standard economy flights from BOS to LHR. Additionally, you can bring 2 cabin bags in the cabin. This carry-on luggage must not exceed 19 inches x 9 inches x 17 inches and weigh no more than 50 lb. Baggage allowances can vary depending on your cabin class and fare type, so check your booking or British Airways’s website to avoid extra fees at the airport.

Offering an excellent in-flight experience and a 4-star airline rating, British Airways is a popular option for many passengers heading from BOS to LHR. What’s more, if you’re a British Airways Executive Club and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be on a Boeing 787-10 or a Boeing 787-9 when flying British Airways from Logan Intl. Airport (BOS) to Heathrow Airport (LHR). However, keep in mind that a different aircraft may be assigned due to operational factors.

Depending on your ticket type, a fee generally applies if you cancel or reschedule your flight more than 24 hours after confirmation. To find flexible plane tickets, select our “Changes included” and “No cancel fee” boxes when you search for flights. For more information on canceling or modifying your reservation, go to “Trips,” select your flight and click on “Manage Booking.”