United Airlines operates out of Terminal B and Terminal C at George Bush Intercontinental Airport (IAH) in Houston, Texas. United IAH Terminal B has gates numbered from B1 to B30, while Terminal C has gates numbered from C1 to C45. Terminal B serves domestic flights, while Terminal C serves both domestic and international flights. Both terminals offer a range of amenities such as restaurants, shops, and lounges for travellers to enjoy before their flight. If you are flying with United Airlines, be sure to check your ticket or confirmation email to see which terminal your flight will depart from. Additionally, you can check the airport's website or use the airport's mobile app to get up-to-date information about your flight's departure gate and terminal.