Originally Posted by
irishguy28
Indeed, they really should take away those "This flight earns XXX miles" in the booking engine when it is so frequently wrong.
All AF- and KL-coded and operated flights will earn miles, as long as they are revenue tickets (i.e. not booked as Award redemptions)
But if one books KL in S class and upgrades to O, one earns the S class miles, right?