Frontier Airlines PHX Terminal inexpensive tickets, travelers should expect to pay extra for amenities like checked baggage, seat preference, and onboard refreshments. Although Terminal 3 has basic facilities like eateries, retail stores, and free Wi-Fi, it is devoid of the upscale options seen in other terminals. Despite being quite simple to use, the terminal's packed areas and little seats can make it difficult to maneuver during busy times. All things considered, Terminal 3 provides the airline's low-budget passengers with effective, albeit basic, service.