American Airlines, Inc. is a major airline in the United States headquartered in Fort Worth, Texas, within the Dallas–Fort Worth metroplex, and is the largest airline in the world in terms of passengers carried and daily flights. American, along with its regional subsidiaries and contractors operating under the brand name American Eagle, operate an extensive international and domestic network with almost 6,800 flights per day to nearly 350 destinations in 48 countries. The airline is also a founding member of the Oneworld alliance, one of the world's three major airline alliances.