Originally Posted by
The Matador
What exactly is "upgrade to flex main cabin?" Never heard the term and I can't find anything online....?
The only difference I could tell is it was $10 more and went from Q to S class.
In this case, your buying up not to the next higher coach fare class but to the coach fare one additional class higher, or a jump up by two classes: Y B M S H Q K L U T X V