Singapore Airlines will use an A350-900 aircraft on its Christchurch route from early next year.
It will be the first time the airline uses the new generation aircraft on flights to this country and it will replace a Boeing 777-200 that has been used on the route. The airline flies daily, year round.
Cathay Pacific began a summer service from Hong Kong to Christchurch last year using an A350 but this is seasonal.
Singapore's new plane will arrive from January 7 and the airline says it will give passengers the chance to experience its all-new cabin, including premium economy seats for the first time.
The new aircraft will be a further boost to Christchurch Airport and the city's tourism industry, which is promoting itself as a destination rather than a gateway as more new hotels are opened.