HOT deal alert that likely will not last long! $559 RT from multiple U.S. cities to Sydney, Australia on United Airlines/Air New Zealand/Virgin Australia. Availability varies by city but generally between Jan and Sept 2018.
Sample dates we found from San Diego include March 29-April 14.
BOOKING: Search Google Flights then book direct.
DEPARTURE CITIES: Austin (AUS), Dallas (DFW), Houston (IAH), Phoenix (PHX), Portland (PDX), Salt Lake City (SLC), San Antonio (SAT), San Diego (SAN), San Francisco (SFO), Seattle (SEA), Tucson (TUS)