Originally Posted by Lori_Q

NOT TRUE. Since this is an international itinerary, even a nonrefundable fare can be altered without the change fee, as long as the new fare is higher, even if only by $1. This is true even if the routing is changed -- or originating/terminating cities, for that matter -- as long as the new ticket is international. If the new ticket is LESS, then the $100 change fee is applied.

Of course, if the fare difference is high, it may still be unappealing to change.