The very, very difficult Hawaiian market claimed another casualty when Go! Hawaii Airlines announced that it will shut down on April 1st. Passengers will be accommodated on Hawaiian Airlines.
Go! entered the market 8 years ago thinking it could kick some ass by charging $1, then $19, to fly between islands. They successfully drove poor Aloha Airlines out of the market, then tried to compete with Hawaiian Airlines on its own. Not so much. It has less than 7% marketshare (while Hawaiian has an absurd 85% and charges about $79 each way).
The carrier is owned by Mesa Air Group, which has had enough of the nonsense in Hawaii, and will re-deploy the aircraft to serve as United Express and US Airways Express aircraft on the mainland, where they can actually make a profit.