Air New Zealand cancelled thousands of flights and grounded planes as a result of the coronavirus pandemic.
The Commerce Commission received more complaints about Air New Zealand than any other company in the year to June 2020, the market watchdog says.
But the Commerce Commission said that a complaint laid against a company did not necessarily mean the company had done anything wrong, and larger companies generated more complaints due to their size and scale. Also, some complaints were not investigated because they were unfounded, it said.
Information released under the Official Information Act (OIA) shows Air New Zealand was the subject of 329 customer complaints to the Commerce Commission in a year when the coronavirus pandemic wreaked havoc with the aviation sector.