As of my last knowledge update in September 2021,  Air Canada Cancellation Policy had a cancellation policy in place. However, keep in mind that airline policies can change over time, so I recommend visiting Air Canada's official website or contacting their customer service for the most up-to-date information. Here's a general overview of Air Canada's cancellation policy as of that time:24-Hour Risk-Free Cancellation: Air Canada, like many airlines, typically offers a 24-hour risk-free cancellation period. This means that if you book a flight and need to cancel it within 24 hours of booking, you can usually do so without incurring any cancellation fees.