Travelling around New Zealand could be about to get even more expensive

Air New Zealand's signalling it will have to raise domestic airfares by about five-percent on average, due to unavoidable rising costs.

Chief Executive Greg Foran says they aren't making money on many of the tickets they sell.

He's revealed on an 100-dollar domestic ticket, roughly 70-dollars is going to authorities, airports and GST.

Foran says there is 30-dollars in that 100-dollar ticket left to buy the aircraft, staff it, and maintain it.