I was just going off what the aeroplan website told me for taxes, based on certain days that showed those flights.

I don't know much about them but is there any way to buy a seat and upgrade it with Star Alliance Upgrade Awards or is that only good to bump up Latitude seats to Business class which are only a few hundred dollars difference $3427 vs $3722 each way? I imagine the Tango fares $1652 each way are not eligible right?

Thanks for all the input