Ninoy Aquino International Airport (MNL) in Manila is the largest and cheapest airport to fly into the Philippines. It has the most airlines flying there out of all the airports in the country. Competition between airlines is fierce, therefore you have more chance of getting a cheap flight. Another good option is flying to Mactan–Cebu International Airport (CEB), located in Cebu - if you are planning to visit the city or the tourist hotspots nearby.