The New Zealand government has paused flights from Western Australia after three new coronavirus cases were detected in Perth.  

"Ministry of Health officials have temporarily paused direct flights from Western Australia to New Zealand following new positive COVID-19 cases in Perth," a New Zealand health ministry update said.

"Ministry officials have conducted a rapid public health assessment for New Zealand, and have determined scheduled direct flights from Western Australia to New Zealand should be immediately paused."

The ministry said it is assessing the situation and is awaiting on further information from Australian health officials.

Western Australia's latest cases stem from a hotel quarantine security guard in his 20s who has tested positive to COVID-19 and was potentially infectious in the community for four days. 

State health authorities said the guard, who recently received his first dose of the Pfizer COVID-19 vaccine, worked on the same floor as two other positive cases from the United States and Indonesia.

He visited Perth's inner-northern suburbs for days before testing positive. 

Two of the seven people currently living with the man who worked at the Pan Pacific Hotel have tested positive to COVID-19. 

WA Premier Mark McGowan said a full lockdown of the city was not required at this stage but a decision could made on Sunday.

"Our restrictions in place, our use of masks and the ability of our contact tracers and testing, gives us the ability to hold on a lockdown decision this afternoon," he said.

"We're effectively in a holding pattern and I hope we can avoid going back into lockdown.

A travel bubble between Australia and New Zealand opened on April 19, allowing Australians to cross the Tasman without having to undertake quarantine. 

But New Zealand Prime Minister Jacinda Ardern said people needed to be aware travel could be disrupted if there was an outbreak.