How to cancel an Air Canada flight and get a refund? According to the Air Canada Flight Cancellation Policy, cancellations made within 24 hours from the time of booking and 7 days before the prearranged departure are thoroughly free. Additionally, there are different strategies for cancellations, online as well as offline. You can drop your ticket straight by signing into your account on the website of Air Canada or by approaching their client care helpline number and requesting cancellation. After the process is successfully finalized, you will get an affirmation email after which your refund will be moved within 7 to 10 days.