Frontier Group Holdings Inc., the parent company of Frontier Airlines, has announced a significant expansion with the launch of 23 new routes set to begin in late winter and early spring 2026. These new routes will serve 24 airports across the United States and Mexico, aiming to provide more affordable travel options for consumers. The expansion includes new services from cities such as Nashville, Charlotte, Columbus, Tulsa, and Tampa. Additionally, Frontier is introducing enhanced offerings for travelers, including UpFront Plus seating with extra leg and elbow room, and plans to debut First Class seating in early 2026. The airline is also offering promotional fares to celebrate the new routes.