Air Miles

Air Miles refer to a loyalty program currency offered by airlines and their partners. They can be earned when booking flights or making purchases with affiliated companies (such as credit cards, hotels, or car rentals). 

Air Miles are collected by travelers and can later be redeemed for free or discounted flights, upgrades, and other perks. The goal is to motivate and reward frequent travelers.  

Depending on the airline, Miles may expire after a specific period of inactivity. For example, American Airlines Miles are valid for 36 months, while Delta SkyMiles do not expire.