Heathrow Airport, also known as London Heathrow, is a major international airport in London, United Kingdom.
Heathrow is confirmed, the error was boards and check departure affect-in systems in all terminals.
British Airways , the largest airline at Heathrow, 20 flights canceled.
", direct customers to their doors, we have provided additional Heathrow colleagues in our terminals.
"We apologize for the disruption and will continue to be updated on a regular basis. "
Air Traffic control is not affected by the technical failures, but the questions that come in on a busy day for the family to travel, have yet to be delayed even further, triggered by the bad weather over the weekend.
British Airways said the cancellations were the result of Heathrow, IT is causing problems in combination with the existing disturbance by storm Dennis.
He added that who would be entitled to cancel a flight to a refund or could be re-booked. Accommodation would be provided, if necessary.
"We will work with you to resolve the issue as a priority and apologise for The Delay to our customers.
BA has experienced two high-profile IT failures in recent years.
In August of last year, More Than 100 flights had to be cancelled and an additional 200 were delayed, after the departures of a breakdown, the two separate systems, a deal with the online check-in, and The Other with flight.