CO, NW and DL all fly to Hawaii (KE too, but that won't help you get from WAS to HNL)
Of the three, all are configured for domestic first class, not international, so don't expect anything too spiffy.
If you really want a good experience, probably the best thing to do would be to take NW from WAS to MSP, then fly first on the Airbus 330 to HNL. The seats are the same as those used on NW's world business class (very comfy, in my humble opinion) and the food is apparently a slight notch above typical domestic first class. there should be more info in the NW forum