I'm with Hawaiian. Our CASS system should be up and running next week. We fly out of PDX and SEA to HNL. Our loads are very heavy but the jumpseats are rarely full (may change with the introduction of CASS?). A good strategy is to try for the HNL flight, if you don't get on try the OGG (Maui)flight. We don't go to OGG every day, but on days that we do it's a good back up. Out of both cities it leaves a little over an hour later. You also have NWA out of both cities.
Good luck