The airport's bottom line was affected by the pandemic, as international traveller numbers fell by 95 percent.
This contributed to about $21 million in lost earnings.
Despite the various lockdowns in the past 12 months, domestic tourism fell just 6 percent to 3.6m.
Total traveller numbers through the airport fell from 5.2m in the past financial year to 3.7m.
"We spent seven years building the business back better after the earthquakes," CIAL chief executive Malcolm Johns said.