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Revenue from contract with customers (Tables)
 12 Months Ended
Dec. 31, 2020
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Summary of Disaggregated Operating Revenues
Operating revenues are comprised of passenger revenues, cargo and mail, and other operating revenues. The following table shows disaggregated operating revenues for the years ended as December 31, 2020, 2019 and 2018.
 
 
  
2020
 
  
2019
 
  
2018
 
Passenger revenue
  
   
  
   
  
   
Passenger revenue
  
$
752,050
 
  
$
2,581,179
 
  
$
2,567,316
 
Miles redeemed
  
 
8,544
 
  
 
31,426
 
  
 
20,073
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
 
760,594
 
  
 
2,612,605
 
  
 
2,587,389
 
    
Cargo and mail revenue
  
 
21,002
 
  
 
62,460
 
  
 
62,483
 
    
Other operating revenue
  
   
  
   
  
   
Frequent flyer program—marketing services
  
 
15,452
 
  
 
22,170
 
  
 
16,291
 
Other operating revenue
  
 
3,955
 
  
 
10,173
 
  
 
11,464
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
 
19,407
 
  
 
32,343
 
  
 
27,755
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
$
801,003
 
  
$
2,707,408
 
  
$
2,677,627
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
Summary of Changes in Contract Liabilities
The table below presents the changes in air traffic liability:
 
   
                  
   
                  
 
 
  
2020
 
 
2019
 
Balance at beginning of year
  
$
497,374
 
 
$
471,676
 
Sales
  
 
887,004
 
 
 
2,878,814
 
Revenue recognition
  
 
(700,406
) 
 
 
(2,355,626
) 
Tax recognition
  
 
(113,473
) 
 
 
(404,732
) 
Reimbursements
  
 
(82,910
) 
 
 
(45,396
) 
Interline tickets
  
 
(15,056
) 
 
 
(35,272
) 
Other
  
 
(1,838
) 
 
 
(12,090
) 
 
  
 
 
 
 
 
 
 
Balance at end of year
  
$
470,695
 
 
$
497,374
 
 
  
 
 
 
 
 
 
 
The table below presents the activity of the current and
non-current
frequent flyer liability:
 
   
                  
   
                  
 
 
  
2020
 
 
2019
 
Balance at beginning of year
  
$
80,326
 
 
$
67,814
 
Deferred of revenue
  
 
19,431
 
 
 
43,938
 
Recognition of revenue
  
 
(8,544
) 
 
 
(31,426
) 
 
  
 
 
 
 
 
 
 
Balance at end of year
  
$
91,213
 
 
$
80,326
 
 
  
 
 
 
 
 
 
 
   
Current
  
 
16,041
 
 
 
35,120
 
Non-current
  
 
75,172
 
 
 
45,206
 
 
  
 
 
 
 
 
 
 
 
  
$
91,213
 
 
$
80,326
 
 
  
 
 
 
 
 
 
 
Operating Revenue by Principal Geographic Area
Information concerning operating revenue by geographic area for the period ended December 31 is as follows:
   
                  
   
                  
   
                  
 
 
  
2020
 
  
2019
 
  
2018
 
North America
  
$
233,039
 
  
$
857,002
 
  
$
826,529
 
South America
  
 
281,008
 
  
 
975,530
 
  
 
1,076,507
 
Central America
  
 
246,727
 
  
 
740,358
 
  
 
648,747
 
Caribbean
  
 
20,822
 
  
 
102,175
 
  
 
98,089
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
$
781,596
 
  
$
2,675,065
 
  
$
2,649,872