Police have found the body of a man believed to be missing fly-in fly-out worker William Carter, who vanished after he was dropped off at Perth Airport.

Jenny O’Byrne had breakfast with her son William Carter, also known as Bill, then dropped him off at Terminal 3 about 12.40pm on December 6.

Jenny O’Byrne had breakfast with her son William Carter before dropping him off at the airport.

Mr Carter never boarded his flight. Picture: Supplied
It later emerged he ordered a taxi about an hour-and-a-half later and was dropped off at Trigg beach, in Perth’s northern suburbs.

The 25-year-old was last seen near the local surf club on West Coast Dr about 2.40pm.

He had been due to board a flight to his job at a site near Karratha later that day, but never did.

Police confirmed on Tuesday that a body had been found.

The 25-year-old was last seen near the local surf club.

Trigg beach, where Mr Carter was last spotted. Picture: Google Street View
“Formal identification is yet to be completed but it is believed to be 25-year-old man William Carter, who went missing on Saturday, December 6,” a spokesperson said.

“His death is not being treated as suspicious and a report will be prepared for the Coroner.”

Mr Carter’s mother had previously told reporters her son had been “going through a situational crisis” and there had been some mental health concerns.