Originally Posted by
KARFA
For an avios ticket you can only change to the same zone and I don't think ORD and SFO are in the same zone.
For a revenue ticket it depends on the terms of the ticket whether you are allowed a change in destination/date etc. to start with, and if so what the costs would be.
That's very helpful. So if I changed outside the zone, I would essentially be canceling the ticket and starting a new one - in which case the expired Joker would be lost?