This question already has an answer here:

I am travelling to Australia (Adelaide) on PR (E-Visa) 1st time from India (So do i need any transit visa at Hong Kong & at Perth airport if i stay inside the airport only & my time b/n the connecting flights is less than 8 hrs)

marked as duplicate by David Richerby, Jan, bytebuster, Mark Mayo May 2 at 1:05

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • You never need a transit visa for the country that is your final destination. If Australia is happy for you to visit, they're certainly happy for you to change planes as part of that visit. – David Richerby May 1 at 12:50

As David Richerby stated in his comment, you don't need a transit visa for Perth if you've already got a visa for Australia.

And according to Timatic, you don't need a visa for Hong Kong either if you stay in the transit area:

TWOV (Transit Without Visa):

Passengers with a confirmed onward (Air-to-Air or Air-to-Sea) ticket to a third country within 48 hours. They must stay in the international transit area and have documents required for the next destination.

Not the answer you're looking for? Browse other questions tagged or ask your own question.