Miles earned from flying expire after two years, but may be extended by taking another flight and crediting those miles to Flying Blue. Flights operated by Air France, KLM or partner airlines qualify. Miles expiration is also extended by two years when you make a purchase with an eligible co-branded credit card.

As of May 2026, Air France-KLM's Flying Blue program has simplified its mileage expiration policy, making it significantly easier for members to keep their miles active. All Flying Blue miles now have a 24-month validity period that is reset by any earning activity. This is a major improvement from the previous policy, which required "qualifying" flights or credit card spend to extend the life of miles earned through flights. Now, simple activities such as transferring points from a partner (like American Express Membership Rewards or Chase Ultimate Rewards), booking a hotel through a partner portal, or making a small purchase via the Flying Blue shopping mall will reset the clock for your entire balance. For Elite members (Silver, Gold, and Platinum), miles do not expire as long as they maintain their status. To ensure your miles stay safe in 2026, the "pro" strategy is to link your account with partners like Accor Hotels or Amazon to ensure a steady trickle of earning activity, or simply perform a small points transfer every 23 months to keep your hard-earned rewards from vanishing.