"We will be returning in the next few weeks with Rob and preparing for his funeral which will be a private family affair."
They were in close contact with their son's wife, Sharlene, and the couple hoped that she and their grandsons could be left in peace to grieve.
"Obviously we are grateful Rob has been positively identified and we feel for the families of those not yet identified as it is a very lonely time waiting for this process to be completed.
"Our hearts go out especially to families whose loved ones may not have made it to Amsterdam yet. Their nightmare may continue for months. Ours is coming to a close for this phase."
Mr Ayley, 29, was flying to New Zealand from Amsterdam on MH17 when it was apparently shot down over pro-Russian territory in eastern Ukraine on July 17.
Nearly 300 passengers and crew died.
A trust was set up for Mr Ayley's children after the crash, which has so far raised about $3000.