If Air Canada cancels your flight, your ticket is refundable. Air Canada will rebook you on the earliest available flight or issue a travel voucher or refund at your request. There is no Air Canada Cancellation Fee in this situation. For more contact with Air Canada Customer Service at +1-877-350-4939. https://www.lowfaremart.com/blogs/am-i-eligible-for-compensation-of-cancelled-flights-on-air-canada