Fog at Hawke's Bay Airport caused flight cancellations and delays last night and this morning.
A low pressure system over Northland caused rain, wind and foggy conditions in Hawke's Bay overnight and throughout the morning.
An Air New Zealand spokesperson said a flight from Auckland to Napier was cancelled last night due to adverse weather conditions in Napier.
As a result a Napier to Wellington flight was also cancelled this morning, she said.
Some flights were delayed including one from Wellington by 50 minutes which arrived in Napier at 10.09am.
Jetstar also had several delayed flights this morning but could not confirm whether these were due to weather.