Originally Posted by
Thai-Kiwi
Whilst not relevant to this flight date as there is no difference, it is sometimes worth checking Grabaseat in case there is specific flight that is being sold cheaper (usually at an off-peak time).
If so, then snaring it as a FlexiRefund can be useful for the free time change on the day (or free cancel and refund if no availability for desired flight time).
I suspect there are a lot of people that never check the GAS site and only ever look at the Air NZ site.. And as a result are unaware that you'll only get access to some of the cheaper GAS fares on GAS site and not the main Air NZ site.