Frontier Airlines introduces 20 new routes featuring super low fares
1. Frontier Airlines announced 20 new routes with fares as low as $29. 2. New routes launch from major cities, targeting competitive markets. 3. Frontier aims to be top low-fare carrier in the U.S. 4. Spirit Airlines struggles with debt; potential merger discussions with Frontier. 5. U.S. airlines' shares rose due to improving airfare data and pricing power.