What Is Air New Zealand Upgrade? The Upgrade on Air New Zealand is a special feature that allows eligible travelers to upgrade their seat to a premium cabin. Further, the airline has various modes for the flight upgrade, including AirNZ OneUp, purchasing it with cash, or bidding. Moreover, when one upgrades their flight, they can enjoy all the amenities and services that enhance the journey for them. For more details about the seat upgrade, contact the customer service of Air New Zealand or read the blog linked above. Read more: https://www.airlinesgrouptravel.com/blog/how-to-upgrade-on-air-new-zealand