There are 2 methods to obtain inexpensive flights to Australia right now.
To take advantage of this flight deal, use Google Flights to identify the cheapest days to depart and return, and then book through an online travel agency like Priceline.
And if your search isn’t finding you exactly what you want, Qantas is also selling discounted tickets to Australia, with fares starting at $899 round-trip. The 72-hour sale, which ends on March 1 at 11:59 p.m. PST, is valid for economy seats from Los Angeles to Sydney, Brisbane, and Melbourne.