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Single-Till versus Dual-Till Regulation of Airports: Where Do Academics and Regulators (Dis)Agree?

Most airports operate under public ownership, while the number of private and economically regulated airports is increasing. Furthermore, airports nowadays earn as much revenue from commercially-oriented business activities as from aeronautical activities. These two observations lead to a natural question: How to optimally integrate profits derived from commercial activities into the regulation of aeronautical charges? This question is addressed in this paper by comparing literature results on the relative benefits of regulatory regimes with regulatory practice in Ireland and the United Kingdom to identify avenues for future research which could be useful to support and improve future regulatory decisions.