Sites about public transportation, airports, buses, and trains which serve the state of Hawaii or more than one town or island in the state are available here.
Regular Websites
Pilot's Guide to the Islands offers the first two chapters of the book by the same name, as well as details about weather, planning, and pictures. - Flying Hawaii
http://www.wecanfly.com/
AirNav provides a list of all public airports in the state, the city each is in, and the official identification letters, as well as communication details and FAA information. - Hawaii Airports
http://www.airnav.com/airports/us/HI
This Port of Hawaii's site contains the official port handbook, details of various ports on all islands, and updated news. - State Harbors Division
http://www.state.hi.us/dot/harbors/