$51 Cheap British Airways flights Madrid (MAD) to London (LHR)

Apply the "Price (lowest to highest)" filter on Expedia to find cheap British Airways return flights from $101 from MAD to LHR. Affordable one-way fares from $51 are available as well.**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.

Scoring the best British Airways deals from MAD to LHR often comes down to booking at the right time. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better yet, you can pocket 17% on average by buying your fare on a Sunday compared to a Friday, which is usually the most expensive day to book.* It's smart to kick off your flight search about one month before your departure date.*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.

The earliest British Airways flight from MAD to LHR departs at 10:35AM UTC+1, touching down at 12:05PM UTC+0. If you'd like to head off later, the last British Airways flight leaves MAD at 8:50PM UTC+1 and lands at LHR at 10:10PM UTC+0. Flying before noon is often a wise choice as morning flights are less likely to be canceled.**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.

British Airways makes flying from MAD to LHR more enjoyable with an excellent in-flight experience and a 4-star airline rating. You even have the chance to collect points with British Airways Executive Club. Be sure to sign up to Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.