Flew this route recently for a really quick trip home. OGG to PHX cleared at time of booking, about a five days out. EXP.
PHX to OGG on the on the other hand was a different story. while the (unreliable) seat map was showing at least 20 open seats all the way up until 10 mins before boarding, i didn't clear and was number 3 on upgrade list. AC rep mentioned something about premium economy being way oversold...perhaps they were holding lie flats for those folks? ¯\_(ツ)_/¯ no lie flat to hawaii, but it was nice to get some sleep on the red eye back.