Airline Competition: Higher Fares and Reduced Competition at Concentrated Airports

Pursuant to a congressional request, GAO reviewed the effects of increased concentration on air fares and service at major airports around the country, focusing on: (1) the fares and service levels of 15 airports where one or two airlines handled most emplaning passengers; and (2) a comparison of fare levels at the concentrated airports with fares at 38 relatively unconcentrated airports.