The New South Wales health authority issued an alert late on Tuesday about two flights between Wellington and Sydney linked to the case.
It said passengers who were on one flight into Wellington, and one flight back to Sydney last weekend, are considered close contacts of a COVID-19 case.
The flights were Qantas QF163, which left Sydney at 7.05pm on Friday 18 June and landed in Wellington at 12.12am on Saturday; and Air New Zealand NZ247, which left Wellington at 10.13am on Monday 21 June, arriving in Sydney at 11.33am.
