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SEGMENTAL INFORMATION (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 04, 2018 | Dec. 31, 2015
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers |  | $ 9,895,456 | $ 9,613,907 | $ 8,988,340 |  |
Other operating income |  | 472,758 | 549,889 | 538,748 |  |
Depreciation and amortization |  | (981,646) | (1,001,625) | (960,328) |  |
Result of indexation units |  | 865 | (748) | (311) |  |
Income (loss) atributable to owners of the parents |  | 181,935 | 155,304 | 69,220 |  |
Expenses for income tax |  | 83,782 | 173,504 | 163,204 |  |
NET INCOME (LOSS) |  | 213,247 | 200,714 | 110,670 |  |
Assets of segment |  | 17,566,777 | 18,797,972 |  | $ 5,129 |
Segment liabilities |  | 13,820,001 | 14,530,736 |  | $ 377 |
Property, plant and equipment |  | 9,953,365 | 10,065,335 | 10,498,149 |  | $ 10,938,657
Intangibles other than goodwill |  | 1,441,072 | 1,617,247 | 1,610,313 |  | $ 1,321,425
Freight [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers |  | 1,186,468 | 1,119,430 | 1,110,625 |  |
Air Transportation [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | 9,887,090 | 9,159,031 | 8,587,772 |  |
Income from ordinary activities from transactions with other operating segments |  |  | 454,876 | 400,568 |  |
Other operating income |  | 346,315 | 308,937 | 364,551 |  |
Interest income |  | 27,181 | 28,184 | 27,287 |  |
Interest expense |  | (356,269) | (393,286) | (427,054) |  |
Total net interest expense |  | (329,088) | (365,102) | (399,767) |  |
Depreciation and amortization |  | (974,827) | (994,416) | (952,285) |  |
Material non-cash items other than depreciation and amortization |  | (223,677) | (75,479) | 10,069 |  |
Disposal of fixed assets and inventory losses |  | (46,351) | (39,238) | (82,734) |  |
Doubtful accounts |  | (18,741) | (18,272) | (29,674) |  |
Exchange differences |  | (157,720) | (18,717) | 122,129 |  |
Result of indexation units |  | (865) | 748 | 348 |  |
Income (loss) atributable to owners of the parents | [2] | 72,333 | (3,482) | (83,653) |  |
Participation of the entity in the income of associates |  |  |  |  |  |
Expenses for income tax |  | (36,506) | (104,376) | (92,476) |  |
NET INCOME (LOSS) |  | 103,645 | 41,931 | (42,203) |  |
Assets of segment |  | 16,431,182 | 17,430,937 | 17,805,749 |  |
Segment liabilities |  | 13,394,785 | 14,007,916 | 14,469,505 |  |
Amount of non-current asset additions |  | 763,878 | 412,846 | 1,481,090 |  |
Property, plant and equipment |  | 668,786 | 325,513 | 1,390,730 |  |
Intangibles other than goodwill |  | 95,092 | 87,333 | 90,360 |  |
Purchase of non-monetary assets of segment |  | 756,913 | 490,983 | 782,957 |  |
Air Transportation [Member] | Passenger [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | 8,700,622 | 8,039,601 | 7,477,147 |  |
Air Transportation [Member] | Freight [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | 1,186,468 | 1,119,430 | 1,110,625 |  |
Coalition And Loyalty Program Multiplus [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | 60,020 | 454,876 | 400,568 |  |
Income from ordinary activities from transactions with other operating segments |  |  | 67,554 | 65,969 |  |
Other operating income |  | 126,443 | 240,952 | 174,197 |  |
Interest income |  | 26,072 | 50,511 | 58,380 |  |
Interest expense |  |  |  |  |  |
Total net interest expense |  | 26,072 | 50,511 | 58,380 |  |
Depreciation and amortization |  | (6,819) | (7,209) | (8,043) |  |
Material non-cash items other than depreciation and amortization |  | (85) | (145) | (991) |  |
Disposal of fixed assets and inventory losses |  |  |  |  |  |
Doubtful accounts |  | (96) | (144) | (476) |  |
Exchange differences |  | 11 | (1) | (478) |  |
Result of indexation units |  |  |  | (37) |  |
Income (loss) atributable to owners of the parents | [2] | 109,602 | 158,783 | 152,873 |  |
Participation of the entity in the income of associates |  |  |  |  |  |
Expenses for income tax |  | (47,276) | (69,128) | (70,728) |  |
NET INCOME (LOSS) |  | 109,602 | 158,783 | 152,873 |  |
Assets of segment |  | 1,145,942 | 1,373,049 | 1,400,432 |  |
Segment liabilities |  | 449,347 | 563,849 | 572,065 |  |
Amount of non-current asset additions |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Intangibles other than goodwill |  |  |  |  |  |
Purchase of non-monetary assets of segment |  |  |  |  |  |
Coalition And Loyalty Program Multiplus [Member] | Passenger [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | 60,020 | 454,876 | 400,568 |  |
Coalition And Loyalty Program Multiplus [Member] | Freight [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] |  |  |  |  |
Eliminations [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | (51,654) |  |  |  |
Income from ordinary activities from transactions with other operating segments |  |  | (522,430) | (466,537) |  |
Other operating income |  |  |  |  |  |
Interest income |  |  |  | (10,718) |  |
Interest expense |  |  |  | 10,718 |  |
Total net interest expense |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |
Material non-cash items other than depreciation and amortization |  |  |  |  |  |
Disposal of fixed assets and inventory losses |  |  |  |  |  |
Doubtful accounts |  |  |  |  |  |
Exchange differences |  |  |  |  |  |
Result of indexation units |  |  |  |  |  |
Income (loss) atributable to owners of the parents | [2] |  |  |  |  |
Participation of the entity in the income of associates |  |  |  |  |  |
Expenses for income tax |  |  |  |  |  |
NET INCOME (LOSS) |  |  |  |  |  |
Assets of segment |  | (10,347) | (6,014) | (7,987) |  |
Segment liabilities |  | (24,131) | (41,029) | (28,680) |  |
Amount of non-current asset additions |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Intangibles other than goodwill |  |  |  |  |  |
Purchase of non-monetary assets of segment |  |  |  |  |  |
Eliminations [Member] | Passenger [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | (51,654) |  |  |  |
Eliminations [Member] | Freight [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] |  |  |  |  |
Operating Segments [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | 9,895,456 | 9,613,907 | 8,988,340 |  |
Income from ordinary activities from transactions with other operating segments |  |  |  |  |  |
Other operating income |  | 472,758 | 549,889 | 538,748 |  |
Interest income |  | 53,253 | 78,695 | 74,949 |  |
Interest expense |  | (356,269) | (393,286) | (416,336) |  |
Total net interest expense |  | (303,016) | (314,591) | (341,387) |  |
Depreciation and amortization |  | (981,646) | (1,001,625) | (960,328) |  |
Material non-cash items other than depreciation and amortization |  | (223,762) | (75,624) | 9,078 |  |
Disposal of fixed assets and inventory losses |  | (46,351) | (39,238) | (82,734) |  |
Doubtful accounts |  | (18,837) | (18,416) | (30,150) |  |
Exchange differences |  | (157,709) | (18,718) | 121,651 |  |
Result of indexation units |  | (865) | 748 | 311 |  |
Income (loss) atributable to owners of the parents | [2] | 181,935 | 155,301 | 69,220 |  |
Participation of the entity in the income of associates |  |  |  |  |  |
Expenses for income tax |  | (83,782) | (173,504) | (163,204) |  |
NET INCOME (LOSS) |  | 213,247 | 200,714 | 110,670 |  |
Assets of segment |  | 17,566,777 | 18,797,972 | 19,198,194 |  |
Segment liabilities |  | 13,820,001 | 14,530,736 | 15,012,890 |  |
Amount of non-current asset additions |  | 763,878 | 412,846 | 1,481,090 |  |
Property, plant and equipment |  | 668,786 | 325,513 | 1,390,730 |  |
Intangibles other than goodwill |  | 95,092 | 87,333 | 90,360 |  |
Purchase of non-monetary assets of segment |  | 756,913 | 490,983 | 782,957 |  |
Operating Segments [Member] | Passenger [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | 8,708,988 | 8,494,477 | 7,877,715 |  |
Operating Segments [Member] | Freight [Member] |  |  |  |  |  |
Disclosure of operating segments [line items] |  |  |  |  |  |
Income from ordinary activities from external customers | [1] | $ 1,186,468 | $ 1,119,430 | $ 1,110,625 |  |
[1] | The Company does not have any interest revenue that should be recognized as income from ordinary activities by interest.
[2] | The result of the Company includes a net result of ThUS$ (10,489) resulting from the application of IAS 21 and IAS 29, for the subsidiaries that are in hyperinflationary economies.

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