https://gisopendata.pima.gov/projects/pima-county-hub::klmruleswhat-is-the-24-hour-rule-for-klm-new_policy-full-guide  The 24-hour rule for KLM allows passengers to cancel their booking without any penalty if the cancellation is made within 24 hours of the original purchase, provided that the booking was made at least 7 days before the flight's departure ????????️➧1♯833 KLM™ [460 ➯1838]????️. This policy provides flexibility and peace of mind for travelers who need to make changes shortly after booking. For assistance or to process a cancellation, you can contact KLM directly at 1-833-460-1838.