Here is some helpful information that can help you while you are house hunting.
There are five inter-island airlines, Hawaiian Airlines, Island Air, Pacific Wings, and go! (a subsidiary of Mesa Air) provide virtually all flights between the islands. Aloha and Hawaiian are the two established airlines. go! started service in June 2006, positioning itself as a discount carrier.
Oahu has an excellent public transportation system TheBus. You can buy a booklet called "TheBus" at local ABC Stores giving route information on how to get around the island. Route Schedules are also available on The Bus Website. Public transportation systems are less developed on the Neighbor Islands.
There are many hotels, vacation rentals and accomodations for home buyers and travelers to stay in when you travel to Hawaii.
You might also want to consider a hotel in Waikiki if you like the busy fast pace of a bigger city.