This paper presents a simple theoretical model of the effects of airline code sharing and antitrust immunity between noncompeting carriers. When carriers without a code sharing agreement or immunized alliance price a route, a double marginalization problem arises. Immunized alliances internalize...

This paper estimates the effects of code sharing, antitrust immunity and Open Skies treaties on prices, output and capacity using an eleven-year panel of U.S.-Europe data. Code sharing and immunized alliances are found to have significantly lower prices than traditional interline (multi-carrier)...

In this paper, we investigate empirically the effect of two recent domestic airline alliances. We find that both alliances benefited consumers - average fares fell and total traffic increased after the creation of the alliances on those city pairs affected by the alliances. We also find that...

In this paper, we investigate empirically the effect of two recent domestic airline alliances. We find that both alliances benefited consumers - average fares fell and total traffic increased after the creation of the alliances on those city pairs affected by the alliances. We also find that...