More changes to Air New Zealand domestic routes

The airline this week announced it'll scrap direct flights between Wellington and Invercargill from January.

It's now announced the Airbus A320 used on some trips between Queenstown and Christchurch, and Dunedin and Wellington - will change to a 68-seat ATR-72, cutting more than 100 seats.

It will also fly three fewer flights a week between Christchurch and New Plymouth, and the first flight from Blenheim to Wellington each day, will take off slightly later.

Air NZ's Scott Carr says the adjustments match a recent drop in domestic demand.