Back again, trying to upgrade my business class ticket to first with United Miles...
Had to get a pretty last minute business class ticket (flying from Narita to SFO on the 27th), so they only had Z class left, which makes it possible to upgrade. I am hoping to use my United miles, what are the chances that some upgrade availability will show up? Or have I missed my chances already... Tried to do the same thing late last year, checked every day 3 weeks out of my departure date and had no luck. Really would like to try out the elusive ANA F class...