The airline is fixing "technical problems" that are affecting its services.
Thursday's issues affected flights departing and arriving into Heathrow.
BA has experienced a series of IT failures in the past couple of years, including cancelling dozens of flights in December 2019.
BA has apologised and offered options to affected customers.
LONDON DAILY ARCHIVE
BA Cancels 43 Flights at Heathrow Due to IT Issues
British Airways (BA) has cancelled 43 flights at London Heathrow due to an IT issue causing difficulties with online check-in and delaying flights.
26 May 2023 · 00:11 UTC
