KLM's 24-hour rule provides flexibility for passengers who need to make changes or cancellations to their bookings. If you need assistance, you can contact KLM at +????-????????????-????????????-???????????????? to modify or cancel your ticket within 24 hours of purchase without incurring additional fees. This rule ensures that passengers can adjust their travel plans promptly. Simply... https://www.devex.com/people/what-is-the-24-hour-rule-for-klm-2435123