When's the flight for? Currently HA is only recliner in F so the UA cabin is def nicer. Is HNL your final destination? Since with Korean you wouldn't be able to add on an interisland without paying extra.
Are you sure you saw HA for 80K RT and not 80K each way?
Flight at the end of January for a stay in Honolulu.
UA only has a with a stop to come home, but in F the longer trip won't be a problem.
Should Korean have had access to the HA flight?
On HA, I saw 80K, but I was't sure it was round, because I have no miles. But it seemed to be the final checkout page - they offered to sell me the miles there. (It had 80K for the first leg and then 80K on the final page.)