Apologies if this has been covered, I've checked the fare codes section and run searches and have succeeded in unearthing a load of stuff on the AMEX T>U upgrade vouchers but not quite what I was after. My question is - can miles be used to upgrade a U class fare that has originated from a "T + Amex voucher"? For example, I use 45K miles to purchase a T to east coast USA then use a voucher to upgrade to U (availability permitting of course). Can I then use another 40K miles to move up to G, in other words end up with a return UC ticket for 85K miles? If the answer is yes then it would seem that the net saving of injecting the voucher into the equation is only 5K miles and that I may as well use 90K to obtain a G outright and not have the headache of T & U availability along the way?
Thanks
James
Thanks
James