Originally Posted by
MBS MillionMiler
Z fare on an NH operated, but United codeshare. Looks like I have to call to convert it to an NH flight number, which I’d do shortly after the ticket issues, is there a chance for a fare change? I saw some instances of that in the thread, but should I worry if I’m doing it relatively quickly after purchase?
There's always a chance of a problem, but that chance is smaller if the flight currently shows Z inventory under its prime (NH) code.
Originally Posted by
MBS MillionMiler
It’s ORD-NRT, I can use the Polaris lounge at ORD, right?
Yes.
Originally Posted by
MBS MillionMiler
The flight isn’t until October, but currently shows O9, which leads me to believe the upgrade would clear instantly, basically, if I applied it right now.
You need to look at the ANA inventory, not the UA inventory -- and you won't be able to find it on United.com. The O9 you're looking at is UA's most expensive PE fare class -- equivalent of NH G -- not F awards. ANA doesn't operate a plane with more than 8 F seats, so there's no way you'd ever see O9 under the NH code.