Hawaii Island Air expands fleet, adds flights By Tovin Lapan / February 17, 2017 Share 1 IslandAir is adding Q400 turboprop planes to its fleet, cutting flight times and allowing the airline to add to its schedule. -- Island Air, an interisland airline serving Hawaii, is expanding and improving upon its fleet and adding flights to its daily schedule.During the next four months the airline will be increasing the number of roundtrip flights from Oahu to neighbor islands with some routes seeing double the number of flights previously operated, the company announced this month. The number of roundtrip flights between Honolulu and Kahului each day will go from eight to 16, flights between Honolulu and Kona will increase from six to 10, and the Honolulu-Lihue route will increase from six daily roundtrips to eight. Island Air also has plans to augment service during weekends and high-travel periods such as spring break.All told, the airline plans to go from 266 flights per week currently running to 476 flights serving Oahu, Maui, Kauai and Hawaii Island. The expanded schedule comes as Island Air is adding a Q400 turboprop aircraft to its fleet. The plane is faster than the ATR-72 that the airline currently uses, which facilitated the expanded schedule. Island Air plans to add up to seven new Q400s by the end of 2017, and will take the ATR-72s out of service as they go.