Originally Posted by
percysmith
I don't know HKG-MEL-SYD, but I do remember getting off in SYD before going to MEL (as a child I was always MEL) and being held at the gate. So I kind of suspect MEL was CX100 too back then but was hoping someone would verify (or alternatively, my Young Discoverer logbook would show up in some spring cleaning).
P.S. My brother confirmed HKG-MEL-SYD and HKG-SYD-MEL and having CX100/101 flight codes back then. Since he didn't go to Sydney back then either, almost certain now.
so basically depending on the day and it will go via SYD or not.
so basically you need to reclear security in Syd before the final leg but no need to clear customs as you are in the international terminal.