A probe of aviation competition could bring New Zealanders better prices. 

Consumer NZ has asked the Government to direct the Commerce Commission to investigate aviation in its next market study. 

It says Air New Zealand has a virtual monopoly on many domestic routes - and it's affecting regional airfares. 

Consumer CEO Jon Duffy says a probe would reveal why prices are so high, and how to change things.

"It allows for a reasoned and evidence-based debate on what the next best options are, and then you can hand it back to the Government and say - alright, you know what you could do to fix things. It's up to you whether you do it or not."

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