Example routes:
San Francisco Sydney Los Angeles: $417 (open-jaw)
San Francisco Brisbane Los Angeles: $429 (open-jaw)
San Francisco Sydney Miami: $457 (open-jaw)
New York Brisbane Miami: $474 (open-jaw)
San Francisco Melbourne Dallas: $483 (open-jaw)
San Francisco Melbourne Los Angeles: $484 (open-jaw)
San Francisco Sydney: $499
New York Sydney Miami: $502 (open-jaw)
San Francisco Melbourne: $509
New York Melbourne Dallas: $528 (open-jaw)
New York Brisbane: $540
New York Sydney: $577
New York Melbourne: $603
and many many more
http://www.secretflying.com/2016/04/error-fare-usa-australia-417-return/