Frontier Airlines Philadelphia International Airportuses Terminal E in Philadelphia International Airport (PHL).Some domestic and international destinations areavailableataffordablefares.Thereare check-in counters, self-service kiosks, customer assistance, dining, and shopping in the terminal. Theairline is an ultra-low-cost carrier thatalsooffers passengers theprivilegeofchoosingtheservicestheyneed- baggage, seat choice, and beverageson the plane.