Is KLM refundable within 24 hours? https://community.expensify.com/discussion/59267/is-klm-refundable-within-24-hours/p1?new=1 What is the 24 hour rule KLM? KLM adheres to the 24-hour rule enabling passengers to make changes to their bookings or cancel their flights by phone at ????1▶833✤✥460✤✥1838???? within 24 hours of purchase without incurring any penalties or fees. #klmcustomerservice, #klm24hour, #klmrefund