"Fortunately, we have travel insurance and the company have agreed to reimburse us for the cost of travel to Palmerston North and our accommodation there."
Although Mr Harris has resolved his problem, there are other Whanganui people who are similarly affected.
Air Chathams chief executive Craig Emeny said the baggage transfer was something the airline would like to sort out.
"We know that some people have been affected and we want to do the best job we can for Whanganui people."
The airline has just bought Kiwi Regional Airlines' Saab 340A, and Mr Emeny said the 34-seater plane will hopefully encourage more people to travel from Whanganui.
Whanganui travel agents Harvey World Travel and the Flight Centre have been dealing with some passengers who have been affected by the airline change.
Flight Centre NZ general retail manager Sue Matson said they have a number of customers due to be flying the Auckland/Whanganui route after August 1.
"Our travel experts are working closely with them to provide support and advice and explore alternative travel options where necessary," she said.
An Air New Zealand spokeswoman said all customers have the option of departing from Palmerston North.
"That will allow them to check their luggage through to any of our domestic or international destinations," she said.
She said if that was not suitable, Air New Zealand would offer customers a full refund of their original ticket price.