Philippine Airlines' cancellation policy varies by fare class and route type. Domestic flights have different rules than international ones. Promo fares are typically non-refundable but may allow changes with fees. Full-service fares offer more flexibility. Cancellations made within 24 hours of booking may be eligible for full refunds under certain conditions. https://www.informationhood.com/24-hour-philippine-airlines-cancellation-policy-fees-changes-refunds/