Even though its only carry-on, its still cheap. Some of the best include:
-$35 SYD-OOL is just crazy!
-$119 AVV-PER
-$59 MEL-OOL
-$35 BNE-NTL

Anyway Jetstar's 4th Birthday is about 3 weeks away, so keep your eyes peeled guys for Jetstar's biggest and best sale of the year , hopefully a International Sale as well as Domestic (take a friend for $4 would be nice to HNL!!)