As of early 2026, Air Miles (including Cash Miles) do not expire, provided your account remains active. The "active" status is defined as earning, redeeming, or transferring at least one mile every 24 months. If your account remains completely untouched for more than two years, it is marked as "dormant," and your entire balance—both Dream Miles and Cash Miles—will be permanently deleted. Air Miles will typically send you an email warning approximately 60 days before your account is set to go dormant. To prevent this, you can perform a simple transaction, like scanning your card at a partner grocery store or using a few miles for a small e-voucher. Interestingly, in late 2025, there were significant updates to the program structure, so it is crucial to ensure your email is up to date to receive these "inactivity" alerts.