The head of the organisation representing airlines around the world says passengers are suffering because of costs imposed by New Zealand airports and the air traffic control operator.
Tony Tyler, the director general and chief executive of the International Air Transport Association said regulation here was too light-handed.
"Intense competition keeps airline fares in check," he told a business audience in Auckland.
"But a much stronger hand of government is needed for infrastructure providers than exists today. In fact, the Airport Authorities Act basically says that airports can price as they see fit. Certainly this should evolve to a structure that forces airports and their airline customers to reach fair commercial agreements."
While the Commerce Commission said Auckland Airport was making a "reasonable return" Tyler said that over the next five years Wellington airport will collect up to $69 million more than it needs to in order to meet what the commission believed was an appropriate level of return.