Philip and Dorothy Blades will travel to Melbourne where their 23-year- old son, Barry, was found with serious head injuries in a road on Friday.
The close-knit community of East Harling in Norfolk - where Barry lives with his family - has raised the fare for Mr and Mrs Blades to make the trip to be with their son, who was said to be in a "critical" condition in Alfred Hospital. Police at first thought Barry may have been accidentially injured in a hit-and-run incident, but now believe he may have been viciously assaulted.
Speaking about his son's condition, Mr Blades said: "We are remaining positive. The reports from the hospital seem to be encouraging. But saying that, he is still in trouble. We spoke to him a couple of weeks ago and he said he was having a fantastic time. He said he had a terrific time in the Far East and that everything was going really well in Australia and that it was a terrific place to be."
He was planning to travel on to Perth. Barry left his parents' guest house in November to set off on his travels with a friend.The pair travelled through Thailand, Laos and Malaysia before going their separate ways in Bali.
A police spokesman said: "He had a single injury and our investigation has not been conclusive, we are keeping an open mind and looking into the possibility that he was the victim of an assault."