Air New Zealand's Chief Executive claims Auckland Airport's planned high charges for airlines is just a symptom of a larger issue. 

A Commerce Commission draft investigation has found the targeted returns from airlines, are in excess of what's reasonable. 

Air New Zealand warns travellers would bear much of that cost at a time where Consumer NZ finds the airline's fares have soared up to 300% in the last five years. 

Greg Foran told Mike Hosking the investigation is a good start but it's time something changed. 

He says the regulation isn't set at the right level and globally airlines are also finding the same issue. 

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• Proposed Auckland Airport charges labelled 'too high' by CommComm
• Auckland Airport charges too high - Commerce Commission