According to Air Canada airlines cancellation policy, travellers can cancel a confirmed flight without trouble. Before cancelling an Air Canada flight, passengers should review the policy. The following is a list of Air Canada's cancellation policies: If you cancel your overseas flight within 24 hours of purchasing it, Air Canada will fully reimburse your ticket price. After 24 hours, passengers must pay a cancellation fee to cancel an Air Canada flight. Only the original point of purchase is eligible for cancellation. Passengers can easily cancel their Air Canada flight by contacting the place of purchase. Cancellation fees vary depending on the ticket type, destination, and amount of time left before departure. If you booked your flight on aircanada.com and it hasn't yet expired, you can easily cancel it by going to this website. You can cancel your ticket by going to My Bookings and choosing Cancel.