AirlinesJul 13, 3:58 PM
American, United, and Southwest Match Exact $523 Fare from Chicago to Denver Half the Time
American, United and Southwest all offered the same $523 Chicago–Denver fare, reviving suspicions of price-fixing. Identical fares occur about half the time: ATPCO and near-instant competitor monitoring let airlines match prices without an illegal agreement—though carriers have sometimes tried to cross that line.