Business Class award space for at least two travelers is plentiful right now from the United States to Australia, mid November through December. There aren't a lot of return options on Qantas, so you'll likely need to find other award space for the other direction (think Air New Zealand, United, or American if you want to fly back to the United States).

Yes, I realize that it's just outbound award space and most people have to fly home.

For only 42,500 Alaska Airlines miles one way, you can fly in Cathay Pacific Business Class between Hong Kong and 10 European destinations.