Originally Posted by xliioper

It's not exactly a secret that the economics of the RJ centric hubs in smaller O&D markets deteriorated in the 2000s. Pretty much the same story was played out in PIT, CVG, STL, and MEM as well. While a larger market, I'd throw DL's second-fiddle RJ centric DFW hub in there as well -- https://www.departedflights.com/DLDFWhub.html