Figures and facts about UPS and its biggest air hub - Reuters After the expansion, Worldport is 5.2 million square feet, up from 4 million. By comparison, Worldport's passenger terminal neighbor in Louisville, Kentucky is 362,000 square feet, and UPS' next largest hub by size, its newly opened Shenzhen hub in China, is almost 1 million square feet. Worldport is the size of 90 football fields. It has 155 miles of conveyor belts and processes 416,000 packages per hour at peak capacity. There are 4,482 miles of fiber optic cable criss-crossing the hub. That's almost enough to stretch from Louisville to Seattle and back.