The late star's father Kim looked tired and sombre as he walked through the airport on Tuesday afternoon (05.02.08).
When asked about returning home for his son's private burial, Kim shook his head and refused to comment, saying: "I'm sorry."
Heather's mother Sally and older sister Kate arrived in Brisbane on Tuesday morning.
The family had been in Los Angeles for more than a week attending memorial services for Heath.
The 28-year-old star - who was found dead in his New York apartment on January 22 - is expected to be laid to rest in a family plot with his grandparents at Perth's Karrakatta Cemetery later this week.
The star's body is due to be returned to Australia in the next few days.
The actor's former fiancée Michelle Williams is believed to be attending the funeral with the couple's two-year-old daughter Matilda.
Heath's 'Brokeback Mountain' co-star Jake Gyllenhaal is also set to travel to Perth for the service.
Yesterday (04.02.08), the New York Chief Medical Examiner's office announced Heath's autopsy results should be ready this week.
Ellen Borakove, director of public affairs at the New York Chief Medical Examiner's office, said: "We are expecting something in the next two days."
The actor was reportedly suffering from depression and insomnia in the months before his death.
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Heath Ledger
