Originally Posted by
Pureboy
3) If I fly NH metal on a UA codeshare, could I book a Star Alliance upgrade to business? Is there any way to check availability ahead of time?
Unfortunately, Star Alliance upgrades are not allowed on code shares.
No, Star Alliance Upgrade Awards are not available on code-share flights.
http://faq.ua2go.com/al/12/1/article...4b&r=0.2869914
Also see:
http://www.united.com/page/article/0,6722,52927,00.html