where are the hub airports in us
Located along the Pacific Coast 16 miles from downtown Los Angeles, LAX (as it's usually referred to) serves as a hub for a handful of carriers, including the three major US airlines (American, Delta and United) in addition to being a focus airport for several more.
Virgin America's principal base of operations and the fifth largest hub for United Airlines, San Francisco International Airport flies hundreds of thousands of passengers each year to popular international destinations such as London, Hong Kong, Seoul and Frankfurt, in addition to 76 domestic destinations.