KLM's 24-hour rule allows you to cancel or make changes to your booking without penalties within 24 hours of purchase 🕒✈️. This applies to tickets booked directly with KLM, offering a full refund or fee-free changes 💳. For more information, visit KLM.com or email customer.care.uk@klm.com 📧. You can also reach customer support at +𝟙-𝟠𝟠𝟠-𝟡𝟘𝟚-𝟞𝟙𝟞𝟠 📞.