LONDON (BLOOMBERG) - British Airways will pull an estimated 800 more flights from its summer schedule as the carrier looks to reduce last-minute cancellations amid continuing staffing shortages and long queues at airports.

The cuts - combined with the roughly 8,000 dropped flights announced in May - mean the unit of IAG SA has now reduced its timetable by 11 per cent through October. The move follows Britain's decision to waive rules requiring airlines to use takeoff and landing slots or lose them the next season.

"As the entire aviation industry continues to face into the most challenging period in its history, regrettably it has become necessary to make some further reductions," a BA spokesman said on Tuesday (July 5) by email. "We're in touch with customers to apologise and offer to re-book them or issue a full refund."

Airports and airlines across Europe are slashing capacity and cancelling flights after being caught flat-footed by a surge of demand following two years of virtually no travel.

The Department for Transport asked airlines pulling flights ahead of its waiver deadline to rebook passengers affected by the scrapped flights and inform them of their refund and cancellation rights.

"We hope airlines will continue to make use of this measure to give passengers some much needed certainty around their summer plans," a spokesperson said in an email.