Operating out of Terminal E of Philadelphia International Airport (PHL) is Frontier Airlines. Frontier is well-known for offering domestic flights to well-liked U.S. locations at reasonable prices. The Frontier Airlines PHL Terminal has a number of facilities, such as eateries, retail stores, and cozy passenger seating places. Arriving early can help you go through security more easily because Terminal E can get crowded. Conveniently situated check-in desks and gates at Frontier make it simple for passengers to board and enjoy their trip.