AA Invokes 'Relevant Submarket' Concept In Monopoly Claim Against Travelport

American Airlines officials have said that distribution is the carrier's fourth-highest cost after fuel, labor and aircraft ownership and maintenance, but legal expenses must be creeping up there, too, as the company is again suing key distributors. In a complaint filed Tuesday in U.S. District Court of Northern Texas, AA is going after the fundamentals of global distribution system-travel management company financial relationships in accusing GDSs--specifically Travelport--of monopolistic behav