Yes, you can let someone else use your American Airlines (AA) AAdvantage miles, and there are two main ways to do it in 2026. The most cost-effective way is to simply book an award flight in their name using your account. When you go to aa.com to redeem your miles, you enter the other person's details as the passenger while using your miles for the "payment." This is free (aside from standard taxes and fees) and is the best way to "gift" a flight. The second way is to transfer miles directly from your account to their AAdvantage account. However, American Airlines charges a significant fee for this—usually around $12.50 per 1,000 miles—plus a transaction fee. Unless the recipient just needs a few thousand miles to reach a specific goal, transferring is usually a poor financial decision. You cannot "sell" your miles to a stranger, as that violates AA’s Terms of Service and can result in your account being closed. As long as you are the one making the booking for a friend or family member, it is a perfectly legitimate and popular use of your loyalty rewards.