Air Canada cancellation and refund policy allows passengers flexibility in changing travel plans. For refundable tickets, cancellations can often be made with a full or partial refund, depending on the fare type. Non-refundable tickets may be subject to fees, with the possibility of receiving a travel credit for future use. The airline recommends managing bookings online through the "Manage Bookings" section on their website for a convenient and efficient process. Passengers should review the specific terms associated with their fare type, and for further assistance, contact Air Canada customer service for personalized support.