I'll be doing it in April. They won't go direct from DAL obviously. Since I don't need to be in HNL until Tuesday, I'm making a stop on the 9th Island on the way. DAL -> Vegas on Friday night and then direct from LAS -> HNL on Monday morning.
We did something similar: stopped in LA to see friends for a night before taking off to Kauai. The two bags flying free is nice, especially since we go for two week trips with all our snorkel gear and wine.
We did HOU-HNL last January, with a stop in Phoenix on the way and San Diego on return.
Not gonna lie ... it was a bit of a challenge as both Phoenix-Honolulu and Honolulu-San Diego flights were completely full. There's just no room. Started to feel like a sardine after three or four hours.