DALLAS (AP) — Coming off another highly profitable year in 2016, U.S. airlines expect traffic this spring to increase 4 percent over last year, and they are adding seats to handle the crush. The trade group Airlines for America forecast Monday that a record 145 million U.S. passengers will fly between March 1 and April 30. The group's chief economist says traffic will rise because airfares have been falling while economic indicators such as household wealth and job creation are rising.Read more on NewsOK.com