Honolulu-based Hawaiian Airlines will introduce premium economy on its Airbus A330 routes between the U.S. mainland, Asia and the South Pacific.

HONOLULU — A roomier seat and a few extra perks are coming to the middle of the cabin when Hawaiian Airlines begins installing premium-economy sections on its workhorse Airbus A330 jets. This aircraft carries most of the traffic between Honolulu and the U.S. mainland as well as key destinations in Asia, Australia, New Zealand, and the South Pacific.