Yes. ANA Mileage Club miles expire after only 36 months of account inactivity. If you do not want your ANA miles to disappear redeem them towards award flight or gift cards of ANA partners. If you want a credit card with rewards that do not expire consider applying to the Discover it® Miles card. Every dollar you spend on this card will bring you 1.5 miles. There is no sign-up bonus but all miles you earn the first year will be matched at the end of your first year (provided you are a new cardmember). So, if you, for example, earn 50,000 miles during the first year, Discover will turn them into 100,000 miles. Earned miles can be redeemed with any airline, provided a ticket is bought with the Discover it® Miles card. And of course, miles never expire.