We fly from Buffalo and when I looked into flights to Honolulu on Southwest, it told me no routes available. Apparently they aren't pairing together segments with two layovers for flights to Honolulu. Typically, we layover in Chicago or Baltimore on Southwest, but I believe they are only flying to Honolulu from west coast cities. So, I would have to book three separate flights like PP mentioned - Buffalo to BWI or MDW, then from there to OAK or San Jose, then to Honolulu. It was not worth the time, hassle, or money for me. Instead, we booked Delta - which has a great nonstop flight from Atlanta to Honolulu