Despite travel capacities being reduced, the route is now the fifth busiest in the world, up from sixth last October thanks to a surge over the summer holiday period.
The business revealed passenger traffic was just 1,937,000 – down 17.5 per cent compared to the same month in 2019.
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.