Resum:
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Hub congestion is a major problem and a relevant policy issue because it causes
delays and many organizational problems at airports that end up implying unpleasant
consequences both for air travelers and airlines. In a competitive framework in which
carriers choose aircraft size, this paper suggests that airlines schedule too many flights
using overly small aircraft, which constitutes a major contributor to congestion. Two-
part congestion tolls, accounting for the congestion imposed on other carriers and the
congestion imposed on all passengers, are needed to recover e¢ ciency. Finally, we
analyze the validity of the results by studying the effects of network size, airport
capacity, competition in layover time, and the formation of airline alliances.
Keywords: congestion; hub-and-spoke networks; overprovision of frequency; con-
gestion internalization; congestion tolls
JEL Classiffication Numbers: L13; L2; L93 |