from LA to AU, thru feb 2004 u can fly on air nz for U$1236 roundtrip. and then in april and may u can fly for $1120.
also, u can fly cheaper if u go to NZ first. then it’s U$1148 for the summer (my summer, ur winter) and $928 for april/may. but i doubt u can get a flight from nz to au for less than the difference in price so ur probably better just coming to AU.