Been to Denver via connecting flight. Big airport there too, like miles long it seems. Charlotte has reached that level and is now major but like 10th largest in US…
San Diego is not that impressive, neither is Cincinnati nor Baltimore (not DC), Pittsburgh had a very huge airport once , dunno if it is still among the top 15 anymore due to lack of industry/population that can afford such…
Columbia is small, so was JAX, dunno about today’s status of latter….
I have plenty of experience cross country flying but vast majority of it was years ago…