Air New Zealand will fly a new configuration Dreamliner between Auckland and Houston from later this year as it targets more of the premium market.
The airline will also step up flights to Buenos Aires from November to meet strong demand. Services to the Argentine capital will increase to up to five a week during the summer peak - up from four at present and three when flights started in December 2015.
The 787-9 Dreamliner services to Houston will operate up to seven times a week during the peak season.
Increasing demand for premium travel means the three Dreamliners scheduled for delivery from October this year will come with a fresh new cabin configuration that will increase the number of business premier seats from 18 to 27 and premium economy seats from 21 to 33.
Air New Zealand uses a Boeing 777-200 on the near 12,000km Houston flight which takes about 13hours 50 minutes, depending on the winds.