Travel can be booked for dates between now until the end of August next year.
Two additional flights have been put on between Wellington and Auckland.
It comes at a great time for those keen to travel.
There are 40,000 cheap seats on sale.
Only those who crack the code can access the special fares.
The airline is celebrating its 12th birthday this Thursday - but you could be the winner.
The airfares include cheap trips to Melbourne and the Gold Coast.
Tickets will be on sale for just four hours.
Applications to take part in a trial of the club open today.