Border restrictions imposed on Greater Sydney residents by Queensland, South Australia and Victoria are being wound back as NSW records an 11th consecutive day without a local COVID-19 case.
NSW recorded zero new local COVID-19 cases in the 24 hours to 8pm on Wednesday and three cases in returned travellers in hotel quarantine.
It comes after the Queensland government on Thursday agreed to allow access to all Greater Sydney residents from Monday.
South Australia will also from Sunday reverse its quarantine orders on arrivals from Greater Sydney. However travellers will need to get tested on arrival and self-isolate until a negative result is received.
Victorian Premier Dan Andrews on Thursday also flagged an easing of border restrictions for Greater Sydney, with an announcement to come on Friday.
Most Greater Sydney residents can enter the ACT without quarantining, while Western Australia stipulates that everyone arriving from NSW must self-isolate for 14 days and get tested.
In Tasmania, residents of and visitors to 10 Greater Sydney council areas are still obliged to quarantine upon arrival.
NSW Premier Gladys Berejiklian welcomed the full reopening of the NSW-Queensland border, labelling the change "fantastic".
"I hope that this brings a lot of joy and relief to people and that people are reunited," Ms Berejiklian told 2GB radio.
Queensland closed its border to 35 local government areas in Sydney, Wollongong and the Blue Mountains on December 20 amid a COVID-19 outbreak, throwing Christmas family reunions into disarray.
Ms Berejiklian noted NSW had not had a hotspot for some time and "even when we do, I don't think the whole state needs to suffer".
Airline Virgin Australia applauded the reopening of the Queensland border and pledged to expand capacity on routes between Sydney and the Sunshine State.
"The announcement provides a boost of confidence for thousands of our people who've been looking forward to returning to work, as well as for travellers who want to do business, reconnect with loved ones, family and friends," a Virgin spokesman said in a statement.
From Friday Greater Sydney will ease restrictions on mask wearing as well as the number of visitors allowed in homes and at other gatherings and functions.
Ms Berejiklian announced the new rules on Wednesday and flagged a further easing of restrictions in a fortnight, should case numbers remain low.
Sydneysiders will be able to have 30 visitors in their homes, while 50 people can attend picnics and other outdoor gatherings - including in yards.
There will be 300 guests allowed at weddings and funerals, while caps will be removed on corporate events, religious gatherings and hospitality venues. However, the "four square metre" rule still applies.
Ms Berejiklian said restrictions limiting venues to one person per four square metres could be revised to two square metres in a fortnight.
Masks will no longer be compulsory in shops but people will still be obliged to wear them on public transport, at religious gatherings, in gaming rooms, at hairdressers and beauticians and in public-facing hospitality jobs.
"We have to live with COVID. We don't know how long the pandemic is going to last, but we need to make sure we're allowing society and the economy to function strongly as ever," Ms Berejiklian said.
NSW Health said in a statement on Thursday that coronavirus testing rates remained too low, with just 7809 in the latest 24-hour reporting period.
"High rates of testing are an important tool in tracking the spread of the virus ... it's crucial that people retain their vigilance," Dr Jeremy McAnulty said.
No COVID-19 patients in NSW are currently in intensive care.
