These Are United Airlines’ Leading Hubs By Passenger Numbers

United Airlines is one of the big four US airlines and vies with Delta Air Lines and American Airlines (and, in some respects, Southwest) for the title of the world’s largest airline. While United has a plurality of the market share in multiple US airports, it only has an absolute majority in one major airport, Newark Liberty International Airport, serving the New York City area. Here is what to know about United’s top hubs and their passenger numbers.