KLM Cancellation Policy allows passengers to cancel their flights, with refunds or travel credits depending on the ticket type. Fully flexible tickets qualify for a full refund, while restricted fares may involve fees or be non-refundable. Cancellations can be made online through the KLM website or customer service. Refunds are typically processed back to the original payment method. In cases of flight disruptions caused by KLM, passengers may be eligible for compensation or rebooking options at no extra charge.