A frequent flier was found dead in her seat just hours into a 16-hour trip home to Australia after a Las Vegas vacation, reports said.

Cabin crew on the Qantas flight from California to Melbourne had to quickly move several other passengers after Aleisha Tracy, 33, died about three hours after takeoff Sunday, according to the Daily Mail Australia.

“I can’t understand how hard it must be for them,” a female passenger told the website. “They were very compassionate with everyone.”

Loved ones called Tracy “happy and healthy” and are “completely at a loss” over her death, according to the report.

She had posted photos of her US trip — including shots of Las Vegas and her Qantas boarding pass — and was planning a trip to New York later this year.

“You were a one of a kind friend who was always there,” close friend David Loiteron posted online. “I am truly blessed to have known you. Thank you for such a beautiful friend. I will miss you.”

Another friend, Jessica Van de Leur, wrote, “I have no words… the sudden loss of such a beautiful young and vibrant soul.”

Former roommate Yeshe Grace remembered a “generous and bubbly” woman with a “larger than life personality and the sweetest heart you could ever hope to meet.”

A Qantas spokesperson told Yahoo News that they were “very grateful” to two doctors who helped on board the flight from Los Angeles.

Victoria Police in Australia are awaiting post-mortem examination results to determine Tracy’s cause of death, according to Yahoo News.

Tracy’s family declined to comment to the Daily Mail.