The naming convention for "first-class" on American Airlines depends entirely on whether the flight is domestic or international. On domestic flights within the United States, the premium cabin is simply called "First Class." However, for international long-haul flights, American Airlines does not typically use the term "First Class" for its standard premium offering. Instead, its primary international business class product is called "Flagship Business." For an even more exclusive experience on select high-traffic routes (like New York to London or Los Angeles), they offer a true first-class product known as "Flagship First." Recently, American has also introduced a new premium economy product called "Premium Plus," which sits between the main cabin and business class. Furthermore, for their transcontinental flights between the East and West coasts of the US, they utilize "Flagship" branding to denote a higher level of service (including lie-flat seats) that matches their international standards. Essentially, if you are flying to another city in the US, you are in "First," but if you are crossing an ocean, you are likely in "Flagship Business" or "Flagship First."