The story
The airline was established on 5 April 1994 and started operations on 22 July 1994. The airline ceased operations on 31 March 2006 as their sole aircraft was no longer airworthy. Its sole route, Hakodate-Okushiri, was taken over the next day by Hokkaido Air System, which is owned by competitor Japan Airlines and Air Nippon Network also increased the Hakodate-Sapporo route in the following day. Parent company All Nippon Airways dissolved Air Hokkaido in July 2006.
From Wikipedia’s article on Air Hokkaido, shared under CC BY-SA 4.0.3