June 22 (Reuters) - American Airlines Group Inc AAL.O said on Thursday Qatar Airways had expressed interest in buying a 10 percent stake in the U.S. airline.

Qatar Airways intends to buy a stake worth at least $808 million, American Airlines said in a regulatory filing.

Shares of American Airlines rose 4.8 percent to $50.77 in premarket trading.

(Reporting by Rachit Vats in Bengaluru; Editing by Sai Sachin Ravikumar) ((Rachit.Vats@thomsonreuters.com; within U.S. +1 646 223 8780, outside U.S. +91 80 6749 3798; Reuters Messaging: rachit.vats.thomsonreuters.com@reuters.net))