The latest advice from the Australian Government on COVID-19 is available on the Australian Government website.
There are no restrictions on the number international passenger arrivals into international airports in Victoria, New South Wales, Queensland or South Australia.
International passenger arrival caps are currently in place for Western Australia. These caps in are focussed on unvaccinated arrivals who are required to go into managed quarantine.
These caps limit the number of unvaccinated passengers international airlines can carry to Western Australia on each flight. Western Australia has indicated they will be reviewing their quarantine arrangements by the end of May 2022.
In relation to domestic travel, the aviation industry-lead Domestic Passenger Journey Protocol identifies and mitigates risks of COVID-19 transmission related to aviation. Passengers are recommended to familiarise themselves with the protocol prior to aviation travel.
International and domestic air travel also requires the wearing of masks on airlines and at Australian airports.