You should review the Air Canada Flight Cancellation Policy, which was created to assist travellers with their cancellations and reimbursements, if you anticipate cancelling your Air Canada reservation. Within 24 hours of the reservation and within 7 days of the scheduled flight, cancellations are completely free under this arrangement. Additionally, there are many cancelling processes, both online and offline. By logging onto your account on the Air Canada website or calling their customer service hotline, you can immediately cancel your ticket. You will receive a confirmation email once the cancellation process has been successfully completed, and your refund will be transferred within 7 to 10 days of that.