N475HA, N476HA, and N477HA have all been delivered to Hawaii. N478HA is sitting on the Boeing flightline in Long Beach fully painted. It is due for delivery later this month.
The first 717 was initially used only on flights between Honolulu and Maui, but has since expanded to other cities. My father has flown them a few times between Honolulu and Hilo, he reports that the seats, both first class and coach, are less comfortable than on the DC-9-51s.
Browse through the Time Tables on Travelocity to see which flights are scheduled to be operated with 717s.
David / SAN