There are many ways to buy plane ticket from airlines going to Singapore.
Firstly, through Travel Agencies nearest to your place (some agencies offer promotions like tour package usually of 3 days and 2 nights with Hotel Accomodation at very low prices depending on which Season).
Secondly, online booking that needs credit/debit cards to any airlines going to Singapore. Some of these airlines with affordable ticket are those flying to Budget Terminals like Cebu Pacific, Tiger Airways, Jetstar Asia. If you want your travel to be much comfortable, you can also book your ticket from Singapore Airways and Philippine Airline but much expensive than the airlines that mentioned on top.
TIP: Book your ticket at least 2-3 months before your flight to get great deals. And always visit their websites for their updated Flight Promotions.
