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REVENUE (Tables)
12 Months Ended
Dec. 31, 2019
Disclosure of revenue [text block] [Abstract]  
Schedule of detail of revenues
   For the year ended 
   December 31, 
   2019   2018   2017 
   ThUS$   ThUS$   ThUS$ 
             
Passengers   9,005,629    8,708,988    8,494,477 
Cargo   1,064,434    1,186,468    1,119,430 
Total   10,070,063    9,895,456    9,613,907