https://farensky.com/blog/how-....do-i-ask-for-an-upgr
If you’re considering upgrading to business class seats, you can do so in advance for a minimal fee. To assist with your decision, check out our blog on How do I ask for an upgrade at Air New Zealand, comparing Air New Zealand’s seat facilities.
For further details, feel free to contact Air New Zealand at OTA: +1-888-355-9951.