The ban became effective on August 29 and will be in place until September 11, according to Hong Kong’s Centre for Health Protection.
In a statement, PAL said passengers affected by the ban may rebook, refund or convert their tickets into a travel voucher.
Rebooking and refund service fees are waived, the airline added.
PAL said the three passengers were allowed to board the PR300 flight bound for Hong Kong after they presented negative results of a swab test taken 72 hours prior to the trip.
The passengers, however, tested positive when they were swabbed again upon landing in Hong Kong.
“We reiterate that the top priority of Philippine Airlines has always been the safety and health of our passengers. We consistently comply with industry and regulatory safety protocols in the Philippines and abroad,” the airline owned by bilyonaryo Kapitan Lucio Tan said.
PAL operates three flights a week to Hong Kong.