Originally Posted by
GuillaumeD
I suppose you cannot just ask to change the booking class on the same flights. It would be considered as a cancellation.
But if you change one flight on both legs, they should reprice the itinerary and it would be considered as a modification.
Or I miss something!
Changing the booking class on a segment would be a change rather than a cancellation. However, when a ticket is non-refundable, the fare rules will normally specify that the non-refundable amount remains non-refundable even if the new itinerary is cheaper (or even, for that matter, if you change the ticket to a notionally flexible booking class). So there is no point in trying to engineer a modification versus a cancellation just for the sake of it.