Calama is the airport for Atacama region. It's a big city compared to San Pedro de Atacama. There are a number of direct flights to Santiago daily, and some to Brazil.
This tour was incredibly well organized, we visited some huge natural places like the desert, salt natural fields, markets, etc... it was all in very good time and we had more than enough time to enjoy each and every single place; as you know the problem with most tours is that we're always running and don't get to see the places with enough detail.... well the system developed by these guys is incredible, allows you to have your special time with each place!
Recomendo, simplismente maravilhoso ♥️