Frontier fills Spirit Airlines' void left at Philadelphia airport with new flight

Frontier fills Spirit Airlines' void left at Philadelphia airport with new flight covers Frontier Airlines launching new service at Philadelphia International Airport to replace capacity lost after Spirit Airlines’ collapse. Frontier began nonstop daily flights between Philadelphia (PHL) and Detroit (DTW) on Sunday, taking over a route previously operated by Spirit. The airline is offering an introductory one-way fare of $79, with tickets available for purchase until 11:59 p.m. July 12, for travel from Aug. 3 to Sept. 2 on selected nonstop flights. Frontier also markets UpFront Plus seating in the first two rows, which includes extra leg and elbow room and an empty middle seat for customers who select it. Frontier said it carried about 3.1 million passengers into and out of PHL in 2025, ranking second behind American. The route expansion follows Spirit’s May 2 shutdown after it failed to reach a $500 million federal bailout, despite pursuing bankruptcy protection.