Hawaiian Airlines plans to buy 10 Boeing Dreamliners and could use them on flights between Honolulu and Auckland.
The airline has opted for 787-9s ahead of a new version of the Airbus A330 it currently has in its wide-body fleet.
The new planes, powered with General Electric GEnx engines, are due to enter Hawaiian's fleet from 2021.
The airline has an option to double the Dreamliner order following the execution of a non-binding letter of intent today. Hawaiian Airlines president and chief executive Peter
Ingram said the economics of the Dreamliner made sense compared to planes it has in its fleet at the moment.
''The 787 suits our network well in terms of the distances we fly and the market sizes,'' he told the Herald.