The 104-page suit, filed on July 14 in the U.S. District Court for the Southern District of New York, centers its allegations on contracts the GDS companies entered into with airlines in 2006, after the DOT stopped regulating distribution systems. Those contracts require airlines to make all of their flight offerings available on each of the three GDSs, the suit says. They also prohibit airlines from selling flights at lower costs through their own distribution systems or through other channels. In addition, airlines cannot levy surcharges on travel agents for using a GDS rather than a less costly alternative. The result of those contractual constraints, says that suit, is that Amadeus, Travelport and Sabre, which together account for more than 99% of the GDS market in the U.S., have been able to charge "supracompetitive" fees that have led to higher ticket prices for airline passengers. "By requiring fares available through a GDS to be priced at parity, regardless of the distribution channel, the contractual restraint eliminates price competition among the defendants, neutralizes the potential of lower-cost entrants and stems the shift of booking to the airlines' own websites, thereby insulating the GDS fees from competitive pressure," the complaint alleges. Get the full story at Travel Weekly