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Aircraft and transportation service expenses (Tables)
12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Summary of Aircraft and Transportation Service Expenses
 
  
2019
 
  
2018
 
  
2017
 
 
  
RMB million
 
  
RMB million
 
  
RMB million
 
Landing and navigation fees
  
 
17,658
 
  
 
15,980
 
  
 
14,910
 
Ground service and other charges
  
 
8,933
 
  
 
8,399
 
  
 
8,025
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
 
26,591
 
  
 
24,379
 
  
 
22,935