United is studying premium economy for domestic markets

United is considering whether to add an upgraded economy section to US flights -- a feature typically reserved for overseas markets. The carrier for months has been readying a new "Premium Plus" section with bigger seats and improved dining options. While the company previously said it would add the class to international routes, it's now considering it for domestic ones, too, president Scott Kirby said Tuesday. A United spokeswoman declined to provide any details about the premium features in the domestic version. United would be unique among the major US carriers if it goes forward with a domestic version of premium economy. <br/>