CHICAGO, 2014-2-27 — /Travel PR News/ — In celebration of its 20th anniversary this summer, Frontier Airlines has announced it is launching six new U.S. routes, including two new destinations served from Midway International Airport. Beginning in June 2014, Frontier will offer seasonal nonstop service from Midway (MDW) to both Harrisburg, PA (MDT) and Knoxville, TN (TYS). “On behalf of Mayor Rahm Emanuel, I… Read the full press release