Air New Zealand will add almost 60,000 additional seats between Auckland and Honolulu next year, which could lead to an airfare war on the increasingly popular route.
Hawaii is one of the high growth destinations for New Zealanders who are travelling in record numbers on holidays overseas as competition between airlines and travel companies increases.
Air New Zealand will operate an additional 94 return services between April and October, moving to daily flights and up to nine services a week during the busy July school holiday period.
Services will be flown by the Boeing 787-9 Dreamliner for most of the year, with a change to the Boeing 777-200 during the July and September holiday periods.
Hawaiian Airlines, which entered this market in 2013, said it was ready for more competition.