Need to know which terminal Frontier Airlines uses at Phoenix Sky Harbor International Airport? The frontier terminal phx is primarily Terminal 3, serving most Frontier passengers traveling through PHX. This guide covers important airport information, including Frontier check-in counters, ticketing facilities, baggage drop services, and security checkpoints. Learn how to locate your assigned boarding gate and navigate departure procedures without confusion. Arriving passengers can also find information about baggage claim and airport exit facilities. Explore useful amenities available inside the terminal, including restaurants, cafes, shopping areas, restrooms, and charging stations. Additionally, discover transportation options such as taxis, rideshare pickups, rental cars, public transportation, and airport parking for convenient airport connections.