American Airlines has an extensive range of nine boarding groups under which every traveler flies. However, priority boarding services are given depending on the group passengers belong to, such as passengers in group 1 can board the flight before other groups. Moreover, to secure American Airlines Group 1 boarding one must purchase a first-class or business-class ticket, have elite status, or be an active-duty U.S. military. For more detailed information about American Airlines boarding groups visit its official website or read the blog from the aforementioned link.