United Airlines PHX Terminal Harbor International Airport's Terminal 3 is home to United Airlines (PHX). Passengers can enjoy contemporary amenities at the terminal, such as expedited check-in sections, roomy seating areas, restaurants, and retail establishments. Flyers from Phoenix may mainly connect to major hubs such as Denver, Chicago, and Houston via United flights. Additionally, Terminal 3 has sections for upgraded security screening to improve traveler experience. United's operations at PHX are focused on efficiency and customer service, with the goal of giving travelers a convenient and comfortable experience prior to their departure.