Air Miles do have an expiration policy that customers should be aware of. Generally, Air Miles expire after a period of inactivity, which is typically 18 months. This means that if there are no transactions or activities associated with a customer's account during this time frame, the collected Air Miles may be forfeited. However, any activity, such as redeeming Air Miles, earning new Miles, or making purchases, can reset this expiry period. Therefore, it is essential for members to regularly check their account and consider engaging with the Air Miles program to ensure their Miles remain active. For the most accurate and current information regarding Air Miles and their expiration policies, it is advisable to visit the official website.