Originally Posted by
thijsseh
That seems unusual. I quickly checked my 'usual' itinerary and on that one buying J with miles costs (about 10%) fewer miles than redemption plus miles upgrade. Was your redemption a special offer?
I booked a long time back so I cant recall the exact calculations- but what you say maybe right- it might have been the money I had to pay which was much higher if I book J vs book Y and upgrade.