The airline, which marks its 80th anniversary this year and operates Heathrow-Manila, has been badly hit by the pandemic.
Gilbert Santa Maria, president and chief operating officer said: “Philippine Airlines felt the impact starting from February last year, with a ban on flights to China.”
Passenger numbers collapsed from 30 million in 2019 to just 7 million last year, with current operations at 21% capacity, he said.
The carrier has sought protection in the US under a procedure known as Chapter 11 as this is where its debts mostly stem from. It is undergoing the same process in the Philippines.