According to Cirium aviation, one in three domestic flights is delayed on average, worsening from the one in five flights from previous years.
It comes despite the wider industry suffering its worst-ever year for performance in 2022, with the all-time record for delays being broken in April, June and July.
The Australian federal government is set to face more questions over its decision after New Zealand said arrivals from China presented “minimum public health risk”.
The federal government made the announcement on Tuesday after strong lobbying from the Australian Airports Association. The exemption covers Hong Kong, Macau and even mainland China.
It comes after the federal government performed a U-turn on Monday and said those arriving from China would be required to show proof they didn’t currently have the virus. The decision followed similar moves by countries including the UK, US and Italy.
Sydney Airport's CEO, Geoff Culbert, has argued there is “a lot of work to do” to convince international airlines to rebuild their networks and then to convince tourists to return.