In the past, it has taken 12 to 18 months to integrate airlines after a merger closes. To hasten that process, Mr. Hayes said, JetBlue has started to plot out the decisions that it would need to make.“There’s a lot of wood to chop, but I couldn’t be more pleased with the start that we’ve made,” he said. “The partnership between the JetBlue and Spirit teams has just been excellent.”The Transport Workers Union, some progressive lawmakers and consumer groups have expressed concern that the merger would further concentrate power in a heavily consolidated industry. They also worry that the elimination of Spirit would remove a competitive force that had acted to lower fa …
