American Airlines AAdvantage is a frequent flyer program that rewards members for flying with American Airlines and its partner airlines. Members earn miles based on the distance traveled and the fare class purchased, which can be redeemed for flights, upgrades, and other travel-related benefits. In addition to earning miles, AAdvantage members enjoy various perks, such as priority boarding, access to airport lounges, and the ability to earn elite status. The program also offers opportunities to earn miles through hotel stays, car rentals, and everyday purchases with affiliated credit cards.