primarily operates out of Terminal B United Airlines IAH Terminal at George Bush Intercontinental Airport (IAH) in Houston, Texas. This terminal is a hub for both domestic and international flights. Travelers can expect a variety of amenities including restaurants, retail shops, and comfortable seating areas For those seeking a more premium experience, United offers its Polaris Lounge in Terminal B. This exclusive lounge provides passengers with access to upscale amenities such as gourmet food, premium beverages, and comfortable seating.