From Radio New Zealand
Air New Zealand and Qantas say they will not change their seating policies, despite more than 30 complaints to the Human Rights Commission.
The complaints have been filed over the airlines' practice of refusing to seat men next to unaccompanied minors.
The Human Rights Commission says it is trying to resolve the issue through mediation or another avenue.
However, both airlines say they will not change their policies, whatever the outcome of the investigation.
One complaint has been laid by National Party spokesman for Political Correctness Eradication, Wayne Mapp, who says the policy is a breach of the Human Rights Act and the fundamental principles of democracy.