https://officialairlinesoffice.zohodesk.com/portal/en/kb/articles/what-is-the-cancellation-policy-for-pal-airlines-cancel-desk
https://officialairlinesoffice.zohodesk.com/portal/en/kb/articles/refund-assist-can-i-cancel-a-flight-and-get-a-refund-in-the-philippines
https://officialairlinesoffice.zohodesk.com/portal/en/kb/articles/quick-cancel-can-i-cancel-my-philippine-airlines-ticket
https://officialairlinesoffice.zohodesk.com/portal/en/kb/articles/cancel%E1%B4%B8ive-what-is-the-pal-policy-on-cancelled-flights
https://officialairlinesoffice.zohodesk.com/portal/en/kb/articles/fare-care-does-pal-refund-cancelled-flights