Frontier Airlines PHX Terminal provides a useful experience. It is situated in Terminal 3 and has an easy-to-navigate layout with obvious signage. Although the terminal has basic facilities like food and retail stores, there might not be as many options as with major carriers. Due to its low prices, Frontier charges extra for baggage and seat preference, which may surprise passengers. The terminal does a good job of fulfilling its goal overall, but in order to get the most out of their flight with Frontier Airlines, passengers should be aware of the costs and services.