*** Moved from K1 Progress Reports to the Philippine regional forum, for more attention from others who may have relevant experience ***
I've always bought my and my family members' tickets directly from the airlines through their website. Avoids any hassle of having to go through 3rd-parties in case of any change in plans.
Btw, if you or any of your family members in the Philippines have a BPI card, there's an online travel sale now. ANA, JAL, EVA Air are some of the participating airlines. Only flights originating from the PH are on sale.