Ms Ardern said she had not yet spoken to her Australian counterpart Scott Morrison yet, but that she didn't expect the case to affect the travel arrangement between the two countries.
A worker in New Zealand's Auckland airport has tested positive for COVID-19, authorities said on Tuesday, a day after the country opened its border to Australian residents for the first time in more than a year. For the countries' governments and travel-related businesses, the opening marks a crucial step toward recovery - though there is still a long way to go.
About 1.5 million Australians visited New Zealand in 2019, the year before the pandemic closed global borders, making up about 40% of all visitors, spending NZ$2.7 billion ($1.93 billion) in the country, official data showed.
Air New Zealand executive Craig Suckling said the atmosphere at Sydney airport before departure was electric.
Nearly 5,000 people were expected to be on the 30 flights Air New Zealand is running across the Tasman Sea on Monday alone.
Quarantine-free travel launched between Australia and New Zealand on Monday.
"In this case there is", Ms Ardern said.
Under the deal with New Zealand, passengers from Australia take "green zone flights" for those who have been in Australia for the previous 14 days. Today's the day... She called me while the press conference was on and said "Mum, you gotta get a flight".
NZ border worker tests Covid positive on second day of bubble
The case appears to be unrelated to the travel bubble though and flights with Australia have not been suspended.
Both countries have managed to keep out the virus by putting up barriers to the outside world, including strict quarantine requirements for travellers returning from other countries where the virus is rampant.
Ashish Jha provides insight on 'Fox News Live'.
Lorraine Wratt, a New Zealander stranded by the pandemic while visiting family in Australia, told AFP it was "wonderful" to be able to travel again.
Stuff reports eight travellers on one of the first travel bubble flights from Australia to New Zealand experienced a glitch with the online travel declaration form, which must be completed before boarding.
There were group hugs and enthusiastic welcomes at airport terminals on both sides of the Tasman Sea as the long-awaited bubble sparked joy and relief.
They must not be awaiting the results of a Covid test, nor have any Covid symptoms, amongst other criteria.
Australia, with its population of over 25 million, has kept COVID-19 cases since March 2020 below 30,000, while New Zealand has recorded a total of just 2,600 infections.
Indianapolis Shooting Suspect Obtained Guns Legally, Police Say
The FBI said agents had questioned Hole previous year after his mother called police to say her son might commit "suicide by cop". According to police officials, Hole had been previously employed by the FedEx facility where the attack was carried out.