The American singer distributed crayons and coloring books to children at the Villamor Air Base grandstand, where evacuees from eastern Leyte and Samar provinces arrive via C-130 planes.
Social Welfare Department officer Jane Abello says Keys stayed for about half an hour to chat with evacuees.
The R&B star was in Manila for a concert Monday at the seaside MOA Arena.
The Philippine Star earlier quoted her as saying that "music has a way of lifting your spirit and that's what I hope to do for the Filipino people."
Keys tweeted three days after the Nov. 8 typhoon: "To the people of the Philippines my heart is with you."
She also encouraged fans around the world to donate to the typhoon victims.
