SFO-HNL
K Fare
$808 RT buy-up to F
Offered post-ticketing
This is the delta between the K fare and the P fare (an UP of some kind I'm sure; didn't check the actual fare basis).
At purchase the offered buy-up was something like $1100 each way. Then after ticketing price dropped by more than half.
$1262 for a RT F ticket SFO-HNL is pretty cheap. About half of what UA would have charged a year ago. We're going to see more of these seats sold, and fewer available for upgrades.