Changing destination with MS?
 

Has anyone experience changing destination with MS? My flight are currently CAN-CAI-IST and, since i booked my flight before my plan was made, I now need to change it to CAN-CAI-CPH. I searched that from CAI-CPH still has J fare (and my CAI-IST is in J fare also). I am assuming I just need to pay the changing fee and fare difference(if there are any. ), or I am facing a whole new price for the new ticket?

You need to cancel/refund and buy a new ticket. But by all means contact MS and inquire about change of destination but I'm quite confident that you will be asked to buy a new ticket. You are looking at a completely other ticket.