- SUR Lineas Aereas is an airline based in Argentina. It is a regional airline that operates domestic and international flights. The airline was established in 1957 and is known for providing connectivity between various destinations within Argentina, as well as to neighboring countries such as Brazil, Chile, and Uruguay. SUR Lineas Aereas operates a fleet of regional aircraft, including Embraer EMB-120 Brasilia and ATR 42-500. The airline aims to offer reliable and efficient air travel options for both business and leisure travelers.