Yes, you can technically transfer Hilton Honors points to American Airlines AAdvantage miles, but it is generally considered a poor use of your points due to the unfavorable exchange ratio. Currently, the transfer rate is 10,000 Hilton Honors points for 1,500 AAdvantage miles. Because Hilton points are typically valued at around 0.5 cents each and American miles are valued at roughly 1.5 cents each, you are essentially trading $50 worth of hotel stays for about $22.50 worth of flight credit. To initiate the transfer, you must log into your Hilton Honors account, navigate to the "Exchange Points" section, and link your AAdvantage account. While it is a helpful "last resort" if you only need a few thousand miles to reach a specific flight award, most travel experts recommend saving your Hilton points for high-value hotel redemptions or using a flexible credit card currency like Bilt Rewards if you specifically need to top up an American Airlines account.