Quarantine-free travel from South Australia to New Zealand will be paused from 11:59pm NZT on Tuesday.
COVID-19 Response Minister Chris Hipkins announced the pause, which comes into effect as South Australia's COVID-19 outbreak grows.
"The decision is based on public health advice from New Zealand officials and follows South Australia's announcement this afternoon that it would go into lockdown for seven days from 6pm tonight," Hipkins said.
"The pause will run for seven days, to July 27, to coincide with the timing of the lockdown and will be reviewed on that day.
"We acknowledge this will be disruptive for travellers and organisations. However, given the current uncertainty and our consistently cautious approach to prevent COVID-19 from entering the New Zealand community, we are confident it is the right approach."
The pause means people can not travel to New Zealand from South Australia after 6pm on Tuesday night until the pause lifts, unless they are a resident.
But Hipkins said people currently in the Australian state who ordinarily live in New Zealand will be able to return on "managed return" flights, and are encouraged to do so.
To be eligible for these flights, passengers will be required to return a negative pre-departure COVID-19 test within 72 hours of flying, along with completing a health declaration confirming they have not been at a location of interest and the Nau Mai Rā travel declaration.
They will not have to stay in a MIQ facility.
South Australia will be going into a seven-day lockdown from 6pm (local time) on Tuesday after recording two new community cases.