I nonrevved on LATAM (although when I went they were called LAN Argentina) between BsAs and both Iguazu and Mendoza. No problems at all and had decent service for domestic. When asking the taxi driver to take you to the airport, they refer to the domestic airport Jorge Newbery as 'Aeroparque'. The driver did not know what I was talking about when I asked him to take me to Aeropuerto Jorge Newbery but eventually figured it out. On the way back from Mendoza, we decided to take a bus to Santiago, Chile and fly back from there. Was a very scenic ride driving across the Andes. It was also a quick easy transfer in Santiago to catch the airport bus.