Hopper itself does not typically charge a "Hopper fee" for cancellations, but you are subject to the airline's specific fare rules, which can include hefty penalties. Most "Basic Economy" tickets booked on Hopper are entirely non-refundable. To bypass these strict rules, many users purchase Hopper’s "Cancel for Any Reason" (CFAR) service at the time of booking. This is an optional, non-refundable fee that allows you to cancel your flight up until a specific deadline (usually 24 hours before departure) and receive a refund of 80–100% of the ticket cost in either cash or airline credit. If you do not have CFAR and the airline allows a cancellation, you will likely receive a "Future Travel Credit" minus the airline's cancellation fee (which often ranges from $100 to $500). Always check the "Fare Rules" in your Hopper receipt email, as some low-cost carriers may have zero-refund policies even for standard economy.