Summary of the main accounting policies: (Tables)

12 Months Ended

Dec. 31, 2019


	Shareholding
	percentage (%)		Main activity
Aeropuerto de Cancún, S. A. de C. V. ()(*)	100	%	Airport services
Aeropuerto de Cozumel, S. A. de C. V.	100	%	Airport services
Aeropuerto de Mérida, S. A. de C. V.	100	%	Airport services
Aeropuerto de Huatulco, S. A. de C. V.	100	%	Airport services
Aeropuerto de Oaxaca, S. A. de C. V.	100	%	Airport services
Aeropuerto de Veracruz, S. A. de C. V.	100	%	Airport services
Aeropuerto de Villahermosa, S. A. de C. V.	100	%	Airport services
Aeropuerto de Tapachula, S. A. de C. V.	100	%	Airport services
Aeropuerto de Minatitlán, S. A. de C. V.	100	%	Airport services
Cancun Airport Services, S. A. de C. V. (***)	100	%	Airport services
Aerostar Airport Holdings, LLC	60	%	Airport services
Sociedad Operadora de Aeropuertos Centro Norte, S.A.	100	%	Airport services
RH Asur, S. A. de C. V.	100	%	Administrative services
Servicios Aeroportuarios del Sureste, S. A. de C. V.	100	%	Administrative services
Asur FBO, S. A. de C. V. (**)	100	%	Administrative services
Caribbean Logistics, S. A. de C. V. (***)	100	%	Cargo services
Cargo RF, S. A. de C. V. (**)	100	%	Cargo services


	2019		2018

Furniture equipment	10 to 20	%	10 to 20	%
Machinery	10 to 20	%	10 to 20	%
Computer equipment	20 to 33	%	20 to 33	%
Transportation equipment	20 to 25	%	20 to 25	%
Improvements to leased premises	10	%	10	%


Licenses	29	years
ODC	29	years
Commercial Rights of Aerostar	34	years
Commercial Rights of Airplan	13	years