Melbourne woman's death on Qantas flight a mystery to friends

Aleisha Tracy has been identified as the woman who died on a Qantas flight. Photo / Supplied

Friends of Aleisha Tracy say they're at a loss as to how the young woman died on a Qantas flight to Melbourne after a holiday, writes news.com.au

Friends of a young woman who died on a Qantas flight home to Melbourne say she was "happy and healthy" and have no idea what happened during the flight.

The young woman, named as 33-year-old Aleisha Tracy, died as she was returning home on QF94 from Los Angeles after a holiday in the United States.

Paramedics were called just after 8.30am and met the aircraft when it landed in Tullamarine Airport about 9am on Sunday after the 16-hour flight.

Police are awaiting the results of a post mortem that was expected to be carried out today, to determine the exact cause of her death.

Ms Tracy's Instagram page shows photos taken in Las Vegas over the past week, as well as a photo of her boarding pass as she waited for her flight to the US in the Qantas International Business Lounge on March 24.

Friends have paid tribute online to Ms Tracy, a National Broadband Network operations centre employee from the Melbourne suburb of Sunshine West.

"Aleisha Tracy I'm devastated. I will miss you brightening up my day. I will miss your hilarious stories," friend David Loiterton wrote.

An NBN spokesperson said Ms Tracy was a "well-liked" member of the NBN team.

Aleisha Tracy's death returning from holiday in the US was a shock to friends. Photo / Supplied

"We are deeply saddened to hear of the passing of Aleisha who was a valuable and well liked member of the NBN team," the spokesperson said. "She will be greatly missed. The thoughts of everyone at nbn are with her family, friends and work colleagues at this difficult time."

"I will miss hearing about your upcoming holidays. I will miss talking about all the shows that we like. You were a one of a kind friend who was always there. I am truly blessed to have known you. Thank you for such a beautiful friend. I will miss you."

Loved ones have also said Ms Tracy was a "happy and healthy" young woman and they don't understand the circumstances surrounding her mysterious death.

"We are completely at a loss," a friend told Daily Mail.

Ms Tracy's family has been contacted for comment.