In the July trial, the airline is offering $59 stand-by fares from Dunedin on direct services to Auckland, Wellington and Christchurch.
Air New Zealand trialled student stand-by fares in September, and again for three months ending last month, and decided to extend the offer to all travellers from the city, commercial general manager Jeff McDowall said.
"The level of enthusiasm from Otago students was great and we were keen for others to have the opportunity to try out stand-by fares as well; hence the reason we are starting this offer in Dunedin where there is already awareness of the concept of stand-by fares," he said.
As part of the deal, travellers must arrive at Dunedin International Airport an hour before departure. Intending travellers must buy a $59 ticket and will be notified 20 minutes before departure if a seat is available.
The offer covers just carry-on bags, not checked-in luggage.
The airline also plans to add more seats into and out of Dunedin, plus will offer more grabaseat fares.
Dunedin International Airport chief executive John McCall said the airline was offering a "very competitive fare", likely to prove popular with travellers.
STAND-BY AIRFARES
• Be at Dunedin International Airport with your carry-on bag ( maximum 7kg) at least an hour before departure and register at the check-in counter.
• Buy a $59 stand-by fare (available for Christchurch, Wellington and Auckland), and the airline will let you know 20 minutes before departure if there is an available seat.
• If you miss out, you can get a refund, or try for the next one.
• Must buy a return ticket at your departure from Dunedin, and be at the airport 60 minutes before departure.
• Stand-by fares are available at peak times, but you are more likely to secure a seat on mid-week flights.
SOURCE: AIR NEW ZEALAND