Air Canada Flight Change Policy-1-844-402-8105

Air Canada offers different fare types, each with its own rules for changes. Higher-fare classes like Business Class usually provide more flexibility with fewer fees, while economy fares might have stricter rules and higher fees for changes. It’s important to know the details of your fare class when considering a flight change.
For personalised assistance or more information, you can speak to a live person at Air Canada by calling 1-844-402-8105.

source: https://groups.google.com/g/comp.os.vms/c/XtAygG6vM4U