KLM allows you to cancel your flight, but fees may apply based on your ticket type. Generally, if you cancel within 24 hours of booking, you won’t face any charges. However, if you wait longer, cancellation fees will depend on the fare rules of your ticket. To find out more about potential fees and the cancellation process, visit KLM’s website or contact customer service. Ensure you stay informed and make the best choice for your travel needs.