 The JMB program has no membership fee, and mileage will be valid to the last day of the 36th month following the month of the flight or transaction date. In addition, if a JMB member does not accumulate mileage within 36 months after becoming a member, or a JMB member's account remains inactive at zero mileage for a consecutive 36-month period, JAL may withdraw or cancel the membership of such member.
