Originally Posted by
CanuckInParis
Hey all,
Does anyone know how they determine availability for advance upgrades with miles? I know with the old system it used to be based on O class, but I just tried to do a miles upgrade on a SXM-CDG flight and the platinum line told me there was no upgrade space, despite the flight showing O6 in ExpertFlyer...
O is not only used for awards anymore, and if I recall correctly from a post by irishflyer28, you should go to flyingblue.com, login, go to redeem for reward tickets and see what the miles estimator gives you as the lowest possible option for an award on that route, then if you see that amount in the overview when trying to make a dummy booking for those dates, there is a very good chance that availability is there.