The airline has already responded to the higher cost of fuel with increased prices on domestic and international routes. Long-haul routes have a higher sensitivity to more expensive fuel because of the longer travel times.
Air NZ today said those fuel costs will remain a headwind in the 2019 financial year, and it's managing that through several levers such as hedging.
Its current hedge position for the September quarter was 76 per cent at a ceiling price of US$66/barrel and 75 per cent at a ceiling price of US$71/barrel in the December quarter.
The airline's maximum hedging policy is around 80 per cent. Other responses to more expensive fuel are pricing, capacity, and productivity initiatives, it said.
The airline is in the process of upgrading its domestic fleet and is investigating larger aircraft to support growth on local routes.
Air NZ has previously signalled capital spending on aircraft of $2.1 billion through to 2021, primarily for the Airbus A320/321 NEO planes, and today said it will adjust that capex forecast "to reflect our growth priorities", estimating an extra $350m-to-$450m invested in new aircraft over the coming three years.
Despite that additional spending, Air NZ affirmed its commitment to "a consistent and sustainable ordinary dividend in the medium term, while maintaining business flexibility through the business cycle", and it's prepared its gearing ratio for that planned expenditure.
Air NZ shares rose 0.8 per cent to $3.15 at the market open, in contrast to a 0.1 per cent dip on the S&P/NZX 50 index.