I have a travel exemption and will be flying out to Europe next month, however I still haven't booked a flight yet as I'm still looking for the best price/route.
Qatar Airways is very good and offer a convenient route for me, but some of their international flights from Sydney stop over in Adelaide or Melbourne first. Am I even able to travel this route? The current rules around entering different states, as well as international travel from each state, are a complete mess so I have no idea.
I did a quick Google and found that SA requires all inbound arrivals to apply for an exemption from the health/border department beforehand, but not sure if that's right.
This page appears to have the most correct information.
You're not arriving into Melbourne or Adelaide, only transitting - so as long as you don't leave the transit area I believe you would be fine.