About 1.5 million Australians used to visit New Zealand annually pre-Covid.
The Australian Airports Association said the long-awaited two-way travel bubble would provide a much-needed boost to the aviation and tourism sectors and help to increase the confidence of potential travellers.
Ardern's announcement is also good news for the Rugby Championship which is due to revert to its four-nation format with the return of South Africa later this year.
"I can confirm that quarantine-free travel will begin in just under two weeks, at 11:59pm on April 18", Ardern announced after the date was confirmed by her cabinet.
"If a case is found that is quite clearly linked to a border worker in a quarantine facility and is well contained, you'll likely see travel continue in the same way as you could see life continue if that happened here in Australia", said the New Zealand PM.
"Our consumer research suggests Australians are eager to get on an aircraft and start travelling again with nearly 80 per cent of Australians supportive of creating travel bubbles with countries where levels of COVID-19 are low", chief executive James Goodwin said.
He said Australia should now look to establish more travel bubbles with other countries where COVID-19 cases are low.
"Anyone in Australia who is travelling between states is prepared for outbreaks and there possibly being disruption, and again can't believe I am saying this, view New Zealand as another state in that way", she said.
'We now believe and know that we can safely manage outbreaks without necessarily having that prolonged month-long period in the aftermath of a case.
The Trans-Tasman travel bubble has already seen Air New Zealand ramp up its schedule significantly.
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The plan, which would be expensed over eight years, calls for an increase in the corporate tax rate from 21 percent to 28 percent. The company would benefit from the investments made in roads, bridges, airports and broadband.
'If there is a hot spot in one of the states of Australia we may just act in the same way that another state would, with just limitation of people to come in and out of our borders until that issue is resolved'.
"We are trying to make it as simple for travellers as possible".
Fears that last week's community transmission of COVID-19 in Queensland could push the bubble back, and put the crossover Super Rugby series in jeopardy, proved to be unfounded despite Ardern acknowledging Brisbane's snap three-day lockdown.
"That means in a way we are world leading".
Aussies on specially allocated "green zone" flights will be required to wear a mask while on board and will also be asked to download and use the NZ COVID Tracer app for use while in the country.
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Lawrence Loh issued a Section 22 order mandating the immediate closure of all schools in the region for at least two weeks. More than 76,000 doses of a COVID-19 vaccine were administered in Ontario since Monday's report.
"For this reason, we have suspended the sale of most New Zealand services until 31 October 2021".
Ms Ardern said there were no conversations about the possibility of a bubble with Singapore and Australia.
"The most important thing you'll hear from Kiwis is just that reunification", she said.
But if a state government enacted a short lockdown, that may cause New Zealand to pause flights from that region.
Trade between the two countries is worth NZ$25.6 billion, according to New Zealand data, making Australia New Zealand's biggest trading partner.
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The incident prompted protests in many cities around the United States and internationally against racism and police brutality. Mr Nelson has suggested that onlookers, many of whom were shouting at Chauvin, might have affected officers' response.
"It is an added bonus", she said.