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FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES (Details 1) - USD ($) $ in Thousands | Dec. 31, 2018 | Jan. 02, 2018 | Dec. 31, 2017
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Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, current |  | $ 1,430,789 |  | $ 1,300,949
Trade and other accounts payables, current |  | 1,674,303 | $ 1,673,010 | 1,695,202
Other provisions, current | [1] | 4,794 |  | 2,783
Tax liabilities, current |  | 3,738 |  | 3,511
Other financial liabilities, non-current |  | 2,454,746 | $ 2,901,603 | 2,823,963
Total current liabilities |  | 5,568,752 |  | 5,842,714
Other financial liabilities, non-current |  | 5,864,910 |  | 6,605,508
Other provisions, non-current | [1] | 303,495 |  | 374,593
Other non-financial liabilities, non-current |  | 644,702 |  | 158,305
Total non-current liabilities |  | 8,251,249 |  | 8,688,022
Up to 90 days [Member] |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, current |  | 56,842 |  | 36,000
Trade and other accounts payables, current |  | 970,872 |  | 919,373
Accounts payable to related entities, current |  | 365 |  | 760
Other provisions, current |  | 1,434 |  | 959
Tax liabilities, current |  | 13 |  |
Other financial liabilities, non-current |  | 38,120 |  | 25,190
Total current liabilities |  | 1,067,646 |  | 982,282
Up to 90 days [Member] | Chile, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, current |  | 41,503 |  | 21,542
Trade and other accounts payables, current |  | 198,766 |  | 233,202
Accounts payable to related entities, current |  | 253 |  | 546
Other provisions, current |  | 28 |  | 30
Tax liabilities, current |  | 9 |  |
Other financial liabilities, non-current |  | 14,130 |  | 11,283
Total current liabilities |  | 254,689 |  | 266,603
Up to 90 days [Member] | United States of America, Dollars |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, current |  | 15,339 |  | 14,458
Trade and other accounts payables, current |  | 325,385 |  | 409,380
Accounts payable to related entities, current |  | 112 |  | 4
Other financial liabilities, non-current |  | 10,468 |  | 3,160
Total current liabilities |  | 351,304 |  | 427,002
Up to 90 days [Member] | Argentina, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 229,907 |  | 122,452
Tax liabilities, current |  | 4 |  |
Other financial liabilities, non-current |  | 1,089 |  | 393
Total current liabilities |  | 231,000 |  | 122,845
Up to 90 days [Member] | Brazil, Brazil Real |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 30,974 |  | 28,810
Other financial liabilities, non-current |  | 1,455 |  | 542
Total current liabilities |  | 32,429 |  | 29,352
Up to 90 days [Member] | Colombia, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 7,915 |  | 2,964
Other financial liabilities, non-current |  | 1,009 |  | 837
Total current liabilities |  | 8,924 |  | 3,801
Up to 90 days [Member] | Euro Member Countries, Euro |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 84,903 |  | 58,081
Other financial liabilities, non-current |  | 4,411 |  | 5,954
Total current liabilities |  | 89,314 |  | 64,035
Up to 90 days [Member] | Peru, Nuevos Soles |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 37,285 |  | 39,064
Up to 90 days [Member] | Mexico, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 5,975 |  | 2,732
Up to 90 days [Member] | South Sudan pound |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 13,395 |  | 5,839
Up to 90 days [Member] | Uruguay, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 847 |  | 1,890
Up to 90 days [Member] | Other currency |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 35,520 |  | 14,959
Accounts payable to related entities, current |  |  |  | 210
Other provisions, current |  | 1,406 |  | 929
Other financial liabilities, non-current |  | 5,558 |  | 3,021
Total current liabilities |  | 99,986 |  | 68,644
More than 90 days to one year [Member] |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, current |  | 107,815 |  | 115,182
Trade and other accounts payables, current |  | 37,809 |  | 33,707
Accounts payable to related entities, current |  |  |  |
Other provisions, current |  |  |  |
Tax liabilities, current |  |  |  | 174
Other financial liabilities, non-current |  |  |  |
Total current liabilities |  | 145,624 |  | 149,063
More than 90 days to one year [Member] | Chile, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, current |  | 68,901 |  | 79,032
Trade and other accounts payables, current |  | 26,113 |  | 11,311
Accounts payable to related entities, current |  |  |  |
Other provisions, current |  |  |  |
Tax liabilities, current |  |  |  |
Other financial liabilities, non-current |  |  |  |
Total current liabilities |  | 95,014 |  | 90,343
More than 90 days to one year [Member] | United States of America, Dollars |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, current |  | 38,914 |  | 36,150
Trade and other accounts payables, current |  | 55 |  | 1,154
Accounts payable to related entities, current |  |  |  |
Other financial liabilities, non-current |  |  |  |
Total current liabilities |  | 38,969 |  | 37,304
More than 90 days to one year [Member] | Argentina, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 6,142 |  | 8,636
Tax liabilities, current |  |  |  | 174
Other financial liabilities, non-current |  |  |  |
Total current liabilities |  | 6,142 |  | 8,810
More than 90 days to one year [Member] | Brazil, Brazil Real |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 1,152 |  | 669
Tax liabilities, current |  |  |  |
Other financial liabilities, non-current |  |  |  |
Total current liabilities |  | 1,152 |  | 669
More than 90 days to one year [Member] | Colombia, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 752 |  | 855
Other financial liabilities, non-current |  |  |  |
Total current liabilities |  | 752 |  | 855
More than 90 days to one year [Member] | Euro Member Countries, Euro |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 1,375 |  | 9,165
Other financial liabilities, non-current |  |  |  |
Total current liabilities |  | 1,375 |  | 9,165
More than 90 days to one year [Member] | Peru, Nuevos Soles |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 1,124 |  | 825
More than 90 days to one year [Member] | Mexico, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 167 |  | 115
More than 90 days to one year [Member] | South Sudan pound |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 305 |  | 199
More than 90 days to one year [Member] | Uruguay, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  |  |  |
More than 90 days to one year [Member] | Other currency |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Trade and other accounts payables, current |  | 624 |  | 778
Accounts payable to related entities, current |  |  |  |
Other provisions, current |  |  |  |
Tax liabilities, current |  |  |  |
Other financial liabilities, non-current |  |  |  |
Total current liabilities |  | 2,220 |  | 1,917
More than one to three years [Member] |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 241,823 |  | 276,436
Accounts payable, non-current |  | 308,715 |  | 362,964
Other provisions, non-current |  | 36,120 |  | 41,514
Provisions for employees benefits, non-current |  | 72,674 |  | 77,579
Other non-financial liabilities, non-current |  |  |  | 3
Total non-current liabilities |  | 659,332 |  | 758,493
More than one to three years [Member] | Chile, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 16,232 |  | 41,548
Accounts payable, non-current |  | 14,027 |  | 13,251
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  | 72,187 |  | 73,399
Total non-current liabilities |  | 102,446 |  | 128,198
More than one to three years [Member] | United States of America, Dollars |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 225,591 |  | 234,888
Accounts payable, non-current |  | 293,448 |  | 348,329
Other provisions, non-current |  | 6,065 |  | 6,066
Provisions for employees benefits, non-current |  | 487 |  | 4,180
Total non-current liabilities |  | 525,591 |  | 593,463
More than one to three years [Member] | Argentina, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  | 542 |  | 940
Total non-current liabilities |  | 542 |  | 940
More than one to three years [Member] | Brazil, Brazil Real |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  | 19,815 |  | 24,074
Provisions for employees benefits, non-current |  |  |  |
Total non-current liabilities |  | 19,815 |  | 24,074
More than one to three years [Member] | Colombia, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  | 295 |  | 551
Other non-financial liabilities, non-current |  |  |  | 3
Total non-current liabilities |  | 295 |  | 554
More than one to three years [Member] | Euro Member Countries, Euro |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  | 9,403 |  | 9,883
Total non-current liabilities |  | 9,403 |  | 9,883
More than one to three years [Member] | Other currency |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Accounts payable, non-current |  | 1,240 |  | 1,384
Total non-current liabilities |  | 1,240 |  | 1,384
More than three to five years [Member] |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 281,785 |  | 263,798
Accounts payable, non-current |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Other non-financial liabilities, non-current |  |  |  |
Total non-current liabilities |  | 281,785 |  | 263,798
More than three to five years [Member] | Chile, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 237,377 |  | 189,500
Accounts payable, non-current |  |  |  |
Other provisions, non-current |  |  |  |
Total non-current liabilities |  | 237,377 |  | 189,500
More than three to five years [Member] | United States of America, Dollars |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 44,408 |  | 74,298
Accounts payable, non-current |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Total non-current liabilities |  | 44,408 |  | 74,298
More than three to five years [Member] | Argentina, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  |  |  |
Total non-current liabilities |  |  |  |
More than three to five years [Member] | Brazil, Brazil Real |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Total non-current liabilities |  |  |  |
More than three to five years [Member] | Colombia, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Other non-financial liabilities, non-current |  |  |  |
Total non-current liabilities |  |  |  |
More than three to five years [Member] | Euro Member Countries, Euro |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  |  |  |
Total non-current liabilities |  |  |  |
More than three to five years [Member] | Other currency |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Accounts payable, non-current |  |  |  |
Total non-current liabilities |  |  |  |
Over five years [Member] |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 179,406 |  | 189,500
Accounts payable, non-current |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Other non-financial liabilities, non-current |  |  |  |
Total non-current liabilities |  | 179,406 |  | 189,500
Over five years [Member] | Chile, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 172,530 |  | 189,500
Accounts payable, non-current |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Total non-current liabilities |  | 172,530 |  | 189,500
Over five years [Member] | United States of America, Dollars |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other financial liabilities, non-current |  | 6,876 |  |
Accounts payable, non-current |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Total non-current liabilities |  | 6,876 |  |
Over five years [Member] | Argentina, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  |  |  |
Total non-current liabilities |  |  |  |
Over five years [Member] | Brazil, Brazil Real |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Total non-current liabilities |  |  |  |
Over five years [Member] | Colombia, Pesos |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  |  |  |
Provisions for employees benefits, non-current |  |  |  |
Other non-financial liabilities, non-current |  |  |  |
Total non-current liabilities |  |  |  |
Over five years [Member] | Euro Member Countries, Euro |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Other provisions, non-current |  |  |  |
Total non-current liabilities |  |  |  |
Over five years [Member] | Other currency |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Accounts payable, non-current |  |  |  |
Total non-current liabilities |  |  |  |
[1] | Total other provision at December 31, 2018, and 2017, include the fair value correspond to those contingencies from the business combination with TAM S.A and subsidiaries, with a probability of loss under 50%, which are not provided for the normal application of IFRS enforcement and that only must be recognized in the context of a business combination in accordance with IFRS 3.

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- Definition The amount of current trade payables and current other payables. [Refer: Current trade payables; Other current payables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph k -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_k&doctype=Standard -URIDate 2018-03-16 + Details
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