An airline spokeswoman said the increase took effect on domestic, Pacific and trans-Tasman routes on Monday and would be introduced on all other international flights from February 21.

She said Air New Zealand did not have a separate fuel surcharge, unlike some of its international competitors.

Shares in the airline were up 0.72 percent at NZ$1.40 ($1.06) in early trade on an overall market up 0.1 percent.