PSA Airlines relocating Dayton Ohio headquarters to North Carolina, ... The routes expand to over 100 markets in the U.S., Canada and the Caribbean. This story was originally published January ...

PSA Airlines, a a wholly owned subsidiary of American Airlines Group, ... Philadelphia and Washington, D.C. The routes expand to over 100 markets in the U.S., Canada and the Caribbean. Show comments.

American Airlines is the busiest carrier at McGhee Tyson, and PSA operates popular routes from Knoxville to hubs in Charlotte, Philadelphia and Washington, D.C.