Originally Posted by
jediwho
How far in advance? And do you mean the BC ticket for 25000 miles or upgrade from coach to BC?
That is for the full BC ticket, but it is domestic and you are asking about international. It's still a better deal to get the full ticket, though, not using miles to upgrade. And it's actually much easier to get these tickets when it's *not* in advance (like 2-3 days before departure). But sometimes you can get them far in advance.