Cebu is advertising from $199 one way flights from Melbourne to Manila, although there are one way options @ $169. Had a look at a few dates in October and March, and was able to find flights from $287.61 return.
SALE PERIOD: UP TO August 20, 2018 OR UNTIL SEATS LAST | TRAVEL PERIOD: October 01, 2018 - March 30, 2019
Anything from Brisbane?