“…Much research on this topic has been carried out for the United States of America (US) [1,2,3,4,5,6], but research elsewhere has been lacking. According to Dobruszkes et al [7], the main reason for this is the difficulty of finding homogeneous data in a multinational context. Moreover, in the US, most of the airports serve a distinct city with limited ground transport options, while, for instance, European airports are surrounded by multiple cities, creating overlapping catchment areas.…”