Originally Posted by
Erome
I know the most common and usual method of using this again is to book a new flight, give them that 6 digit reference and my 780 - change fee will be credited towards that flight. However if I am correct, if the new flight is $500, the excess is lost correct?
Correct, the excess will be a lost. For applying the credit, you can also buy the new ticket (especially you have a promo code) online and then send in a refund request after you completed your trip.
Originally Posted by
Erome
Another question, can this be used for anything else? Upgrade fare on an existing flight?
I don't think you can. But you can try applying the credits for an existing flight, after they complete. I don't think this has the "Booked after the credits was issue" limitation - I am not 100% sure. You can also try to submit a refund and see what you get.