While other airlines have paid penalties of more than $35 million in total after admitting their role, Air New Zealand remains the only airline still before the court and has staunchly defended itself.
The airline says it has spent $10 million defending the action while the commission has spent $2.8 million on court and investigation costs to date.
Air New Zealand general counsel John Blair said it had become clearer than ever in the past week that the commission's "quest" should end.
"Air New Zealand remains adamant it has not breached New Zealand competition law."
Commerce Commission chairman Mark Berry said he was limited in what he could say as the dispute was before the court.
"However, we have a very different view of the situation to Air New Zealand, and will be asking the court to hold the airline to its agreement."