The PHL Frontier Terminal is located within Philadelphia International Airport’s Terminal F, which is dedicated primarily to low-cost carriers including Frontier Airlines. Terminal F is easily accessible from the main airport entrances, and there are clear signs directing passengers toward Frontier’s check-in counters, bag drop, and security screening areas. https://airportsterminalhub.com/airlines/frontier-airlines/frontier-airlines-philadelphia-international-airport-phl-terminal/