Originally Posted by
Herb687
To me, a true fortress hub would be something like DL at CVG/SLC, NW at DTW/MEM/MSP, or UA at DEN (after CO and FL dehubbed there), AL at PIT. Maybe even AA at MIA before the growth of LCCs at FLL.
I think you are failing to put it in context. Texas has no state income tax and millions of people moved to the DFW area within the last few years. I bet you anything that AA has more elites based in DFW than DL at CVG/SLC or UA at DEN, for instance.