Over 10,000 aircraft operators and more than 13 million users could have had their personal details and passwords inadvertently exposed, possibly including thousands of Australians.
The free bookings, which were announced as Rex went into administration on 31 July, are enough to fill around 715 737-800s at full capacity, with 30,000 of the rebooked flights having already been taken.
The Australia Travel Declaration will be accessible to passengers on select Qantas flights from New Zealand, who will be able to complete it through the Qantas app up to 72 hours before arrival.
While total ground delays were up 33 per cent during the month, most of these were due to weather issues including crosswinds at Sydney and low visibility events in Brisbane and Melbourne, and just two per cent were attributable to Airservices.