- TAM (Transportes Aéreos del Mercosur) is an airline based in Asunción, Paraguay. It is the flag carrier of Paraguay and operates domestic and international flights to destinations in South America, including Argentina, Brazil, Chile, and Uruguay. TAM Mercosur is a subsidiary of the LATAM Airlines Group, which is the largest airline group in Latin America. The airline offers both economy and business class services and has a fleet of Airbus aircraft. TAM Mercosur focuses on providing convenient and efficient air travel options within South America.