Passengers check in for United Airlines flights at O'Hare International Airport in January. (Photo ... [+] by Scott Olson) Getty Images United Airlines, which beat Wall Street estimates due to strong demand, announced a $1.5 billion stock buyback plan, underscoring a seeming return to an investor focus that had diminished in the pandemic. The move brought cheers from an analyst and condemnation from Sara Nelson, president of the Association of Flight Attendants, who drew a comparison with a hedge fund's bid ...