For Flying Blue Explorer Members, Miles are valid for 2 years. Your miles will be canceled after a period of 2 years with no registered Earn Activity that extends the validity of the Miles. This activity that extends the expiration is called Overall Extending Activity, so Miles will expire 2 years after the last Overall Extending Activity date.
Overall Extending Activity’ is defined as an Activity that rewards the Member with XP (Eligible Flights) or any other Earn Activity designated as an Overall Extending Activity in the Flying Blue Communication and which therefore extends the validity of all Miles, such as flights on Transavia that earn Miles and payment with the co-branded credit cards listed in the Flying Blue Communication.
As for other membership levels, the terms reference that after a period of 5 years with no Miles accrual by a Member, the Company reserves the right to unilaterally terminate the membership.