This has been really helpful for my booking too, thank you! Did you also see a discrepancy between the number of avios shown for the flight, and the number you were ultimately required to use, and add cash? I am very confused because my flight pops us as being 22k avios and I have 27K in my account. However, the system is only letting me book a combination with cash, at 17K avios. Is there no option where I would just pay the 22k, with no cash addition? I need to transfer over a bunch of points for a family trip, so if each ticket will never cost 22k avios (as I had thought), that fact will change my transfer amount. Thanks!​​​​​​​