A number of Air New Zealand flights were cancelled this morning due to fog.
At least four flights out of Auckland Airport were affected, with the super city waking up to foggy conditions.
Tauranga and Christchurch airports also saw disruption.
It came on one of the busiest air travel days of the year.
The airline earlier this week warned travellers airports, check-in areas and security will be "much busier than usual" over summer.
"There is currently low fog in Tauranga causing TRG-AKL flight cancellations and fog in Christchurch is causing cancellations of services.
"We have been communicating with affected customers to reaccommodate them," an Air NZ spokesperson said this morning.
"We apologise for any disruption this may have caused our customers and thank them for their understanding and patience."
Customers were advised to keep an eye on the airline's arrivals and departures page for more information, they added.
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