"After consultation with airlines, capacity limits at Heathrow will be extended at the same level to 29 October to support more reliable and resilient passenger journeys," it said in a statement.
The limit was introduced in July to improve passenger confidence during the summer vacation season after a series of strikes undermined airlines’ material base, notably at some airline ground handlers.
The airport authority said the cap on flight departures had reduced the number of last-minute cancellations and improved punctuality. The limit may be lifted earlier if it continues to see sustained operational improvements.