Hi! It is easy to get around United Airlines LAS terminal United flies out of Terminal 3, which is modern, clean, and simple to navigate. Check-in is a breeze, and security lines are generally fast-moving. There's a decent variety of restaurants and stores to wait in before your flight. Gate areas are roomy, and boarding is typically fast. In total, United Airlines is a hassle-free and comfortable experience, which is a good option for United passengers.