United Airlines George Bush Airport Terminal  is home to United Airlines' expansive hub, making it one of the airline's most significant US locations. The majority of flights at the airport are operated by United, which links Houston to cities in North America as well as overseas locations in Europe, Asia, and South America. The main hubs for United's operations are Terminals B, C, and E, which cater to various flight categories such as local, international, and regional flights. IAH serves as a primary hub for United Airlines, facilitating the operation of a substantial number of connecting flights that facilitate seamless travel throughout the airline's extensive worldwide network.