Looks like they answer my questions posted above:
http://www.khnl.com/Global/story.asp?S=8090803
Originally Posted by KHNL
Aloha Airlines has announced that it is shutting down its inter-island and transpacific passenger flights effective March 31st. Air cargo and contract services will continue. Effective immediatel, Aloha will stop selling tickets for travel beyond March 31, 2008.
*emphasis mine*