Fly from Los Angeles to Perth for $740 roundtrip on Qantas.
Australia is on sale from a number of US cities and Qantas fares are even lower from Los Angeles when booking on third party sites.
Searhing Kayak, I found seats departing Los Angeles LAX on Tuesday, November 20, returning from Perth PER on Tuesday, December 4.
This great price can be found on a few different third party sites for departures from the USA on Mondays, Tuesdays, Wednesdays, and Thursdays, through November. You may return through the end of the booking schedule in June 2019, excluding holiday travel.
See our fare details for booking info.
There are excellent fares from Los Angeles (LAX) to cities all over Australia and elsewhere around the world.
Need a room in Perth? Here's what's available for the above dates on Hotelwatchdog.