Travelers who reserve their tickets with Air New Zealand have the option to upgrade their seats to the higher cabins. Moreover, they offer several methods to do so. Flyers can buy an upgrade by visiting its official website, or they can bid for an Air New Zealand upgrade if they are a member of OneUp, which is a special programme of theirs. Furthermore, flyers can also earn an upgrade if they are in its other programme. To get further details about the benefits and guidelines of seat upgrades on Air New Zealand, visit their official website or read the blog provided by Airlines Group Travel.