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Frontier Airlines operates from Terminal E at Philadelphia International Airport (PHL). This terminal is known for handling domestic flights and offers a range of amenities for passengers, including dining options, shops, and comfortable seating areas. The check-in counters for Frontier Airlines PHL Terminal are conveniently located within Terminal E, making it easy for travelers to navigate. Security checkpoints are efficient, allowing passengers to move smoothly through the pre-flight process. Additionally, Terminal E's proximity to the main airport concourse provides quick access to connecting flights, ensuring a seamless travel experience for Frontier Airlines passengers at PHL.