The 24-hour rule for airlines allows passengers to cancel or modify their bookings within 24 hours of purchase without paying any fees. For details specific to KLM Airlines, call 𝟏-𝟖𝟖𝟖-𝟗𝟖𝟐-𝟏𝟔𝟎𝟔 📞 or 𝟏-𝟖𝟖𝟖-𝟗𝟎𝟐-𝟔𝟏𝟔𝟖. This rule ensures flexibility and hassle-free booking adjustments for travelers.