The Department of Transportion has joined the European Union in granting antitrust immunity to a partnership arrangement between American Airlines, British Airways and Iberia LAE. Called the OneWorld Alliance, the DOT and EU believe that the arrangement will reduce fares and create additional non-stop options for transatlantic flights. It will also provide additional competition for existing alliances. A condition of the approval is that OneWorld make four pairs of slots at Heathrow Airport available to competitors.