Benefits and costs associated to hubbing practices of airlines are still subject to much debate. In the previous literature, some standard spatial concentration indices have been proposed to measure it. However, we show that these indices are "ill-defined" because they do not take into account...

In this paper, we estimate alternative specifications of the Spanish airports' cost function with the objective to provide a comparative analysis on several technological features such as output-specific marginal costs, economies of scale, and the Allen elasticities of substitution. We found...

The recent economic downturn took a severe toll on the aviation industry, leading to a significant contraction in air transport demand. In spite of that, airports' operating costs did not mirror the declining traffic trends and continued to increase during the same period. This paper sought to...