Since the airport terminals in Manila are not as close as one would have desired, it is useful to know which terminal your flight takes off from.
Here is some info - taken from a PAL advert in the Philippines Daily Inquirer today -
A) a useful website for checking this is -
B) You can use this map posted here - http://www.manila-airport.net/Map.cfm
C) The official Manila airport website has good info, but loads (very x 3) slowly - http://126.96.36.199/miaa/
C) for domestic arrivals and departures -
Naia 2 (PAL terminal - near Nayong Pilipino) - Philippines airlines / Air Phil express flights for Bacolod, Cebu, Davao, General Santos, Iloilo, Laoag, Tagbilaran
Naia terminal 3 (new terminal - across Resorts world) -
Max Air Phil express / PAL flights use this - bound for Butuan, Busuanga, Cagayan de oro, Calbayog, Catarman, Caticlan, Cotabato, Dipolog, Dumaguete, Legazpi, Masbate, Naga, Ozamiz, Puerto Princessa, Roxas, Surigao, Tacloban, Tuguegarao, Zamboanga
For Air Phil Express Kalibo, flights (239-240-249-250) use terminal 2. The rest use terminal 3.
Hope the above info is of help to tourists using Manila airport to travel domestic