Headquartered in Mexico City, Mexican flag carrier Aeroméxico (AM) flies non-stop to more than 55 destinations in Mexico, elsewhere in North America, Central America, South America, the Caribbean, Europe and Asia. A member of the SkyTeam alliance, the airline is also the largest domestic airline in Mexico. Mexico City International Airport (MEX) serves as Aeroméxico's primary hub. Secondary hubs are located at Guadalajara International Airport (GDL), Hermosillo International Airport (HMO) and Monterrey International Airport (MTY). The airline also operates two subsidiaries: Aeroméxico Connect and Aeroméxico Express.