What is the 24 hour rule for ＫＬＭ? FAQ~Guide
https://central.xero.com/s/question/0D58V00009IjITGSA3/what-is-the-24-hour-rule-for-%EF%BD%8B%EF%BD%8C%EF%BD%8D-faqguide
James Methew •
4 months ago
ＫＬＭ’s 24-hour rule
allows passengers to cancel their flight reservation within 24 hours of
booking without incurring any cancellation fees +1-888-449-0353 (US),
+44-204-515-5335 (UK); This policy applies to all types of tickets and
destinations.