Originally Posted by
matthandy
Thanks cws.
For the Avios ticket I've flown half of it so definitely ticketed. When did the new APD rules come in?
1 April 2015. The same factor may also apply to other tax changes if they result in a re-ticketing rather than a re-issue. But if you have already started flying the ticket then that's another reason for not changing it online (and why it's often a good idea to book single rather than return tickets if there are no USA sectors).