You may have to be reimbursed a bit higher than the non-reimbursable tickets but you do not have to worry about paying heavy cash if, by chance, you want to Cancel Your flight in Air Canada after the 24-hour window given to the airline or if you would like to make any changes in your current ticket, you do not require to pay extra costs for any change you have done. If your prior ticket is more expensive than your new ticket, you will have to pay the additional price for the difference in the shape of a loan which may be utilised to purchase your ticket. If you cancel your ticket your ticket will be refunded, depending on the method of paying you choose to pay the ticket, within 5-20 working journeys.