Spirit Airlines provides a number of practical services for passengers at Philadelphia International Airport. For easy access to both domestic and international flights, Spirit Airlines Philadelphia International Airport the airline operates out of Terminal E. Travelers can check in at the desk, online, or at self-service kiosks. Spirit’s customer support is accessible for any questions or help, guaranteeing a hassle-free journey. For travelers who are carrying bags, Spirit offers affordable options for both carry-on and checked baggage. To guarantee a comfortable wait before your departure, the airport also offers a variety of dining and retail opportunities..