- US government sues Southwest Airlines, fines Frontier for delayed flights WXII12 Winston-Salem
- DOT sues Southwest Airlines over 2 ‘chronically delayed’ flight routes CNN
- DOT sues Southwest, fines Frontier for ‘chronically delayed flights’ CNBC
- U.S. Sues Southwest Airlines Over Chronic Delays The New York Times
- Southwest Air Faces US Lawsuit for ‘Chronic Flight Delays’ Bloomberg