Emirates and Qantas will unveil further details of their partnership across the Tasman at the official launch of the arrangement in Auckland tomorrow.
Under rules imposed by the New Zealand and Australian governments they can work together on the route but aren't allowed to reduce capacity, in order to maintain present levels of competition.
The two airlines are finalising details including how they align fares. While there will be some fare movement they are unlikely to increase overall on the highly competitive route where Air New Zealand and its partner airline, Virgin Australia, are the dominant players with nearly 60 per cent of passengers.
The Qantas-Emirates partnership was approved in Australia in March but New Zealand did not approve the arrangement until two months later, before which time the airlines were unable to discuss details of how it would work across the Tasman.