Airline competition in the British Isles

We study the relationship between pricing and market structure on the routes connecting the UK and the Republic of Ireland. Because in 2007 the European Commission prohibited the takeover of Aer Lingus by Ryanair, the analysis focuses on their pricing strategies in particular. We use an original dataset of fares posted on-line, which allows to control for the fares' intertemporal pattern for each specific flight and each carrier's specific yield management system. Our evidence supports the European Commission's view that the elimination of a competitor in the Irish airline market is likely to have harmful consequences for consumers.