Hawaii Island Air completes switch to new fleet By Tovin Lapan / September 15, 2017 Share 1 -- Island Air has finished transitioning its fleet from ATR-72 planes to the new squad of Q400 turboprop planes, a process that started in January.Island Air's finat ATR-serviced flight went from Lihue to Honolulu on Sept. 11. The five 68-seat ATR aircraft were replaced with the Q400s, which have capacity for 78 passengers and fly 30% faster than the old planes. The company has plans to add a sixth Q400 later this year. In addition to being faster and more spacious, the more advanced turboprop planes generate less noise and vibration, are more fuel efficient and feature larger overhead bins. Island Air operates more than 400 flights weekly between Oahu, Maui, Kauai and Hawaii Island.