From February 18 to March 31 - weekly flights from Auckland to Shanghai will be reduced from seven to four.
Air New Zealand says they'll contact customers affected by these changes in coming weeks.
Communications Manager Doug Grant says they're doing everything they can to stop the spread of coronavirus.
He says Air New Zealand has medical procedures in place, protective equipment on the aircrafts and robust cleaning practices.
The World Health Organisation today declared coronavirus an international emergency but says there is no need to introduce travel restrictions.