Fog forced the cancellation of 28 flights out of Auckland on Saturday morning.
Auckland Airport said 21 flights have also been delayed. Only regional flights are affected.
Main trunk flights headed to Wellington, Christchurch, Dunedin and Queenstown are unaffected by the fog.
International flights are also unaffected.
Passengers should check the Auckland Airport website for more information on the latest flight arrivals and departures.
Newshub.