It seems that Air Asia will switch it's current KUL-MEL flights to Avalon (which depending on your point of view is Geelong's airport, or Melbourne's second or third commercial airport), towards the end of 2018.
As reported in SMH/Fairfax,
As reported in SMH/Fairfax,
Victoria could have a second international airport by the end of this year, with Avalon Airport securing AirAsia to operate its first overseas services.
Avalon Airport airport and AirAsia will on Sunday announce that the Malaysian carrier will move its twice daily return service between Melbourne's Tullamarine Airport and Kuala Lumpur to Avalon.
....
Avalon and AirAsia believe the service could be operating by late 2018, it is understood.