A number of senior industry figures have told Australian Aviation they remain in the dark about the key requirements for a mass return of international flights.

Brits in Australia will be able to be reunited with their families in time for Christmas after Qantas confirmed the first flights from Sydney and Melbourne to London will depart on 18 December.

Despite reporting its lowest passenger figures since 1994, the numbers placed Brisbane Airport slightly ahead of Sydney's 7.26 million passengers, and Melbourne's 5.89 million.

In this cross-posting with The Conversation, senior lecturer from the University of Western Australia Katie Attwell explains how vaccine passports will function in Australia, and how to get yours.