Aloha! There are still some great deals for flights to the different islands of Hawai’i. The Points Guy has a blog post about some $293 round-trip airfares from Albuquerque and Denver, both of which you can reach inexpensively on Southwest.
Airlines offering these fares include Alaska, American, Hawaiian and United. If you can wait a year, Southwest should be in the mix also.
Search Google Flights for your particular date pair(s) to see the low prices available now. Aloha.