Air New Zealand will be hiking its Koru membership prices by up to 20%.
On its website, the airline said the change was “necessary” to cover the “increasing operational costs” of the programme.
It means the price of a one-year membership will increase by $140, from $694 to $834.
The price of a two-year membership will go up by $240 from $1219 to $1459.
A five-year membership will cost $3374 (up from $2774) – a $600 increase.
The new prices will be introduced on April 26.
With Koru membership passengers can access lounges in New Zealand and overseas, as well as receiving priority check-in, luggage benefits and frequent flyer seating.
There are no changes to benefits.
In February the carrier posted earnings before tax of $185 million for the previous six months.
Air New Zealand's net profit after taxation was $129 million, driven by $3.1 billion of passenger revenue.
It said operating costs, including fuel, had increased $21% and it was feeling the pinch of inflation pressures.
At the time it said it was "is currently reviewing pricing and capacity" to reflect those pressures.
Later that month chief executive Greg Foran said increased competition could lead to lower ticket prices to North America, although since then the airline has paused its direct Auckland-Chicago fights due to ongoing issues with the engine used on Air New Zealand’s Boeing 787 aircraft, the Rolls-Royce Trent 1000 engine.
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