KLM's cancellation policy in 2026 is highly dependent on the ticket type you purchased, as the airline does not offer "blanket" free cancellation for all fares. For Standard and Flex tickets, you can typically cancel your flight and receive a refund, though a cancellation fee may still apply for the Standard tier. The Light (basic economy) tickets are generally non-refundable, meaning you would lose the value of the ticket if you choose to cancel. However, under the 24-hour "cooling-off" rule, KLM allows you to cancel any booking for a full refund within 24 hours of purchase, provided the flight isn't departing within the next day. If the airline itself cancels your flight due to mechanical or weather issues, you are entitled to a full cash refund or a travel voucher (often with an added value bonus). It is always best to check the specific "Conditions of Carriage" in the "My Trip" section of the KLM website, as they frequently offer flexible "rebooking" options that allow you to change your dates for free even if a full refund isn't permitted.