Which Major Hub Airports Handle The Most Low-Cost Traffic?

Traditionally, ultra-low-cost carriers like Ryanair, easyJet, and Spirit Airlines have operated out of secondary airports. For example, low-cost airlines have sought out airports like London Luton Airport (LTN), New York Stewart Airport (SWF), or Paris Beauvais (BVA). By capitalizing on the lower fees associated with operating at these facilities that demand less traffic, low-cost carriers have been able to continue realizing great benefits.