Almost 50 domestic flights around the country have been cancelled or delayed due to heavy fog in Auckland.
Flight NZ8150 from Rotorua to Auckland at 9.50am and flight NZ8151 from Auckland to Rotorua at 8.40am were among those cancelled, an Air New Zealand spokesperson confirmed.
Flights to and from Tauranga have also been affected, the spokesperson said.
A flight to Tauranga was delayed this morning while the Tauranga to Auckland flight scheduled for 9.25am was cancelled.
An Air New Zealand spokesperson said: "We have been communicating with affected customers to re-accommodate them and have been in touch with customers travelling this morning to offer them the flexibility to change their travel to a later time.