Chilean-based operator LAN Airlines has ordered 20 Airbus A320neo twinjets, the latest in a series of agreements from Latin America for the re-engined type.
No engine selection has been made.
Airbus confirmed the order at the Paris air show. It added that it brought LAN's total orders for Airbuses to more than 170, following a deal for 50 firmed last December.
"This order solidifies our continuous commitment to provide customers with the most modern technology in aviation," said LAN chief operating officer Ignacio Cueto.
"Adding the A320neo to our fleet is a huge step in ensuring LAN's leadership in the region."