Gusts over 100kmh were recorded in Wellington on Sunday; however, winds have eased on Monday morning.
Chief operating officer Alex Marren said the airline proactively offered flexibility to customers travelling to or from Wellington on Sunday, allowing them to change their flights to another time, subject to availability.
He said due to the number of customers who need rebooking, seat availability into Wellington will be limited over the next couple of days.
MetService meteorologist Ngaire Wotherspoon said this week was forecast to have calmer weather.
"We've got a couple of days of calmer weather. We do have some rain moving into the North Island on Wednesday and Thursday, but it's looking pretty scrappy and we're not expecting any severe weather for the coming days."
