Wellington airport and Air New Zealand (ANZ) are at odds over airport charges at the New Zealand capital.
This comes after the country's commerce commission issued a report saying the airport will earn between New Zealand dollars (NZ) $38-69 million ($31.7-57.6 million) in profits from 2013 to 2017, adding that the amount is "excessive".
The report attributed the amount to the airport valuing its land higher than what the commission feels is appropriate, and targeting a higher return than businesses whose risk level is similar to the airport.
Wellington airport however questioned the commission's findings, whose theoretical model, it says, is based on a future pricing of over five years. The commission's forecast, it points out, also excluded commercial concessions made to the airlines.
The airport adds that its rates are in between those charged by Auckland and Christchurch airports, and it has predicted increases of up to NZ$0.70 per year.
ANZ, meanwhile, welcomed the commission's report, saying that travellers are shouldering the cost through higher airfares.
"ANZ was forced to increase airfares when the current charging regime took effect, and the impact is even greater for travellers to and from provincial New Zealand destinations because the way [Wellington airport] has structured its pricing means they are effectively cross-subsidising other travellers," says its chief operating officer Bruce Parton.
"ANZ is committed to reducing airfares as soon as a more reasonable charging system is implemented."
Wellington airport is co-owned by New Zealand infrastructure group Infratil and the city of Wellington.