In recent years, ASUR has been certifying the environmental management systems of its airports under the ISO 14001 standard. All nine airports currently have valid ISO certification.
Cancún, Huatulco and Oaxaca Airports were certified in 2006 and will be recertified in 2009. Mérida certified in 2007 and will be recertified in 2010. Cozumel, Minatitlán, Tapachula, Veracruz and Villahermosa Airports were certified in 2008 and will be recertified in 2011.