Originally Posted by
avidflyer
Sorry for the bad news but you pretty much have to spend $2000 to have the CHANCE at an upgrade.
Even then, you will not get upgraded on the day of departure unless Coach is completely sold out and they need to move some people into Biz Elite. In all the years I have flown, this happened to me only once.
If you have 50,000 SkyMiles in your account, and if you buy an M (or more expensive) fare, and if there are seats set aside for upgrades, then you can use the miles (25,000 each way) to get upgraded in advance -- but not on the day that you will fly.