Island Air (officially Hawaii Island Air) is an independent American commuter airline based in Honolulu, Hawaii. It operates scheduled inter-island passenger services in Hawaii. Its main base is Honolulu International Airport on Oahu.

The airline maintains a code share and frequent flyer agreement with United Airlines. Hawaiian Airlines halted its commercial relationship with Island Air in 2012 when it announced plans to begin operating ATR-42s in the islands under its own brand. Island Air also operates its own frequent flyer program, Island Miles (formerly Cloud 9).

Island Air was incorporated in 1980 by Colorado-based Consolidated Oil and Gas as Princeville Airways. It began scheduled services on September 9, 1980, between Honolulu and Princeville, Kauai using two de Havilland Canada DHC-6 Twin Otter STOL capable turboprop aircraft. It served this initial regular commuter route between Princeville and Honolulu primarily for Princeville Resort guests. The airline then expanded its interisland routes with service to Hana, Maui; Hoolehua, Molokai; Kahului, Maui; Kamuela, Hawaii (Big Island); Kapalua, Maui (West Maui) and Lanai City, Lanai. The Princeville Airways fleet consisted of eight DHC-6 Twin Otter aircraft.

In May 1987, Consolidated Oil and Gas sold Princeville Airways to Aloha Air Group, the parent company of Aloha Airlines. Princeville Airways was renamed Aloha IslandAir and served the growing inter-island commuter needs for Aloha Airlines on route services that could not accommodate larger Boeing 737 jetliners. In June 1992, Aloha IslandAir registered the name Island Air as its trade name. In 1995, newly renamed Island Air was granted certification by the Federal Aviation Administration to operate larger aircraft to serve the burgeoning commuter market in Hawaii. In April of that year, Island Air took possession of its first thirty-seven seat De Havilland Canada Dash 8 aircraft.

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