You might want to check out this latest promo of Cebu Pacific Air.
* ‘Raw’ domestic fares are the lowest available single price fares from TigerAirways Australia for one-way travel with hand luggage and are fully inclusive of all taxes and charges. ‘Raw’ domestic fares must be purchased online using a MasterCard debit card issued by an Australian financial institution. The ‘Raw’ domestic fare does not incur the AUD8.50 convenience fee or AUD9.00 for international credit card purchases (per flight, per sector. Click here for details.