Originally Posted by
rankourabu
I know one was not allowed to do this a while back, any success with backtrack via the same city on a stopover?
For example YYZ-IST-ESB(stop)-IST-BKK
Assuming that ESB is only served by Star Alliance from Istanbul (I know not true - just an example)
It purely depends on the agent. Chances are you cannot do this when you first book the ticket (because chances are even the stupidest Aeroplan agent knows you can't do this) but say you got to ESB, and there was inventory from ESB-IST-BKK, you can call and change your flight to allow you to fly back through IST as most agents will not look at what parts of your trip have fallen off.