Hawaiian Airlines has ordered another five Airbus A330-200s, taking its commitment to 22 A330s including four leased aircraft.
The airline said it would introduce the extra jets to its fleet over the next four years.
Hawaiian did not indicate an engine selection, but its current A330s are powered exclusively by Rolls-Royce Trent 700 engines.
It has five A330-200s in its fleet and is using the additional 294-seat twinjets to replace its Boeing 767-300s.
"Our guests have responded enthusiastically to the cabin comfort and amenities of the A330-200, which, together with the superior service of our frontline employees, offer the best airline experience for travelers to Hawaii," said the carrier's chief Mark Dunkerley.