Effective February 10, 2022 – Fully Vaccinated International guests can enter the Philippines without having to quarantine.
Visitor accommodation must be COC approved.
Further information on this can be found at: https://www.philippine-embassy.org.sg/consular/visa/general-information/
… and also on the Philippine Airlines website: https://www.philippineairlines.com/en/covid-19/arrivingintheph