Originally Posted by BOS-NWA
Here are my thoughts:
2) 25,000 miles will upgrade you all the way to TPE. If available, you will be in FC from mainland to Hawaii, then business class to TPE, if your layover is less than 24 hours in HNL.
I booked a flight to ICN yesterday with a stopover in NRT on the return, and they seemed to indicate that the one-way upgrade would cover me from the furthest point all the way back.