  Privatization and commercialization of airports in recent years are drawing a
different picture in the aeronautical industry. Airport benchmarking shows the
accommodation and performance of airports in the evolution of the market and
the new requirements that they have to face. AENA manages a wide and
heterogeneous network of airports. There are 46 airports divided into three
categories and with particularities due to their geographical location or the
competitive environment where they are located. This paper analyzes the
technical efficiency and its determinants of the 39 commercial airports of the
AENA network between the years 2011-2014. To do this, two benchmarking
techniques, SFA and DEA, are used, with a two-stage analysis. The average
efficiency of the network is between 75-79\%. The results with the two
techniques are similar with a correlation of 0.67. With regard to the
commercial part of the network, AENA has a high margin for improvement because
it is below the world and European average. AENA must focus on the development
of the commercial area and the introduction of competition within the network
to improve the technical efficiency of regional airports mainly.
