Air New Zealand and Singapore Airlines argue their planned strategic alliance would result in greater availability of lower fares and more strength in the face of growing competition from the Qantas-Emirates partnership.
Although the NZ and Singapore carriers would likely operate joint pricing and co-ordinated revenue management on alliance routes, they have told NZ's Ministry of Transport the plan would deliver "significant and substantiated benefits".
Under the plan - which if approved could come into force late this year - Air NZ will restart services to Singapore, and the two airlines would co-ordinate their operations between the two counties and on certain services beyond. The alliance would provide another route for flights between New Zealand and Europe.
Capacity would rise with extra flights and bigger Airbus A380 aircraft being used on the route by Singapore Airlines.