Jetstar is reviewing its domestic schedule amid the COVID-19 alert level 4 restrictions announced for the entirety of New Zealand on Tuesday.
The lockdown means only essential travel is authorised.
During previous level 3 and 4 lockdowns, Jetstar suspended all domestic flights within Aotearoa.
A Jetstar spokesperson says customers impacted by cancellations as a result of the latest level 4 lockdown will be contacted directly by the airline to make arrangements.
For the next 48 hours, Jetstar flights in New Zealand will continue to operate normally to allow customers to return home, in line with Government advice.
The airline is allowing customers with upcoming bookings to and from Auckland, Christchurch and Wellington, to bring their travel dates to a flight operating before August 19 at no additional cost.
During the lockdown period, meal and drink services onboard are suspended, but water is available on request.
Customers can bring their own drinks and snacks onboard.