This story was originally published by RNZ.
Air New Zealand has 7500 passengers flying out of Auckland tomorrow when the city's border opens.
In addition, the airline says there are almost 4500 people from around the country flying in.
Overall the company has almost 21,000 passengers booked across its network for the day.
The top three destinations for Aucklanders are Wellington - which can expect 1800 people, Christchurch, which is getting 1700, and 1200 will land in Queenstown.
From today, passengers must show a vaccine pass or evidence of a negative Covid-19 test within the previous 72 hours before travelling.
A spokesperson says people should allow an extra hour at the airport in case of queues and delays.