British Airways has cancelled all short-haul flights from Heathrow until midday and further disruption is expected throughout Saturday due to ongoing technical issues. The airline said the problem, which may also cause delays for its customers using Gatwick and London City Airport, is related to a hardware issue and is not because of a cyber attack. The major outage has caused cancellations and delays of flights, pile-ups of luggage and passengers stuck on planes after landing at Heathrow. It said long-haul flights are still operating, but customers may experience some delays. BA’s website and app were inaccessible for hours on Friday evening, preventing customers from checking in online or booking flights. On Saturday morning, the airline advised customers to check the website for the latest flight information before coming to the airport. In a statement, BA said: “We are extremely sorry that due to the continuing technical issues we are …