ASHEVILLE, North Carolina, March 24 -- The Asheville Regional Airport issued the following news: American Airlines is growing and will serve more nonstop routes at Asheville Regional Airport (AVL) than ever before this summer. The most recent additions include new summer seasonal service to Austin, Texas (AUS) and Miami, Fla. (MIA). American has also added more frequency to several routes this summer, including: Chicago, Ill. (ORD), from Saturday-only to daily service, and Dallas-Ft. Worth, Tex  more