There is a Piso fare going on at Cebu Pacific Air with their newest flight destinations Cagayan de Oro to Iloilo and Zamboanga to Tawi-Tawi with Travel Period: Oct. 14 – Dec. 15, 2011. You can travel to these destinations paying only P1. Other fees not included but its just very minimal like for example additional baggage and terminal fee which won’t reach p500.
You can book by going to cebupacificair.com