The cause of her death is still unknown and authorities say an autopsy is to begin on Tuesday.
She was reported to have died in the 16th-hour of the flight after two doctors attempted saving her life but all to no avail.
A Qantas representative told Business Insider that a passenger received medical attention from two doctors on a flight from Los Angeles to Melbourne and was met by medical personnel after the flight landed, but the representative did not specify if the passenger died.
Friends of the deceased say they had no idea what could have possibly been the reason for her death, and that they were mot aware of she having any issues.
Even thoughshe was met by medical personnel when the flight landed there was still nothing they could do to save her life.