March brings exciting new flight routes, with Austin seeing seven new nonstops, including destinations like Orlando, Panama City, and Phoenix. Southwest adds new flights to Mexico, including Los Cabos and Puerto Vallarta. Transatlantic routes from American Airlines, Discover Airlines, and SAS launch new services to Madrid, Munich, and Oslo. Washington, D.C., sees new flights to San Diego, San Antonio, and Seattle, offering more convenient travel options for various destinations.