Travelers who have been fully vaccined are able to enter Australia without having to worry about getting sick. Our neighbours to the North have a better idea.
Air Canada has saver award availability in business class from June to October. I was able to find multiple dates with four seats available, as well as a connecting flight from Toronto to Australia and a flight fromYancouver to Australia for a couple of weeks around the first of November.

The easiest way to find available dates is by using United's calendar search, which will show fairly accurate saver availability over a 30-day period.

Air Canada Aeroplan has flights from between 79,000 and 81,000 miles and is a transfer partner with Chase, Citi and American Express.

Air Canada can be used to connect to YVR through Star Alliance partners. It was cheaper to book the connecting flight separately because most flights from the US seemed to add a bit to the cost.
Most of these tickets are bookable for 80k, with just $50 in fees, and are available for all of us sitting there thinking about the orphans of Avianca LifeMiles.

Chase, Citi and Amex are also partners with LifeMiles.
It's difficult to find business saver availability from North America to Australia and even harder to find it with multiple seats.
Straight to the points.