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What is the 24-Hour Rule in KLM? The KLM 24-hour rule lets you cancel your flights for a full refund if the cancellation is made within 24 hours of booking. This applies to all fare types, destinations, and travel classes, as long as the reservation is made directly through KLM's official website, mobile app, or call centre. To cancel under this policy, call 1 (866) 551-6554 (US), 44 (203) 3497756 (UK). Key Benefits of the KLM 24-Hour Cancellation Policy Risk-Free Booking: Cancel within 24 hours and receive a full refund. Contact 1 (866) 551-6554 (US), 44 (203) 3497756 (UK) to process your cancellation. No Cancellation Fees: No service charges or penalties apply if cancelled within the 24-hour window. Call 1 (866) 551-6554 (US), 44 (203) 3497756 (UK) for quick help. Applicable to All Fares: Whether you book economy or business, the rule applies. For detailed fare rules, call 1 (866) 551-6554 (US), 44 (203) 3497756 (UK). Flexible Changes: You can also make changes instead of cancelling. Speak to a KLM agent at 1 (866) 551-6554 (US), 44 (203) 3497756 (UK).

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