foudn this:
Terms and Conditions | Business Upgrade | Turkish Airlines ®
which unfortunately doesnt specifically state that I class seats are the inventory, but I'll take your words for it. Does that imply that the FF seat inventory is the same using my United Miles, as someone using their Turkish Miles and Smiles miles?
I log into the United website, and I check Star Alliance mileaage awards to Ist. there are some available, but at different mileage amounts... 88k... 155k, etc. With the different miles cost, they can't all be that same I class of service, can they?
Some airlines open up ALL physical seats to FF award 24 hours before the flight. Any idea if Turkish does that?