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ACCOUNTS PAYABLE, NON-CURRENT (Tables)
12 Months Ended
Dec. 31, 2018
Trade and other payables [abstract]  
Schedule of accounts payable, non-current
    As of     As of  
    December 31,     December 31,  
    2018     2017  
    ThUS$     ThUS$  
Aircraft and engine maintenance     467,923       483,795  
Provision for vacations and bonuses     15,357       14,725  
Other sundry liabilities     376       312  
Total accounts payable, non-current     483,656       498,832