https://cityhallforms.powerappsportals.us/forums/general-discussion/b7ae5cb7-69a0-ef11-b542-001dd803c8bc [24 hour Changes] What is the 24 hour rule for KLM? KLM's 24-hour rule allows passengers to make free changes (Call 1-(844)-533-(4487) Book, Cancel, Refund) or cancellations to their bookings within 24 hours of purchase, provided that the departure date is at least 7 days away at the time of booking (Call- 1-(844)-533-(4487) Book, Cancel, Refund). This policy is designed to give customers flexibility and peace of mind after making a reservation. For any changes or more detailed information, customers can contact KLM directly at 1-(844)-533-(4487).