Why, oh why is it,( unless airlines are running sales), so much more expensive to fly out of CAE compared to any other city in the state and nearby cities out of state? FLO, GSP, MYR, CHS, CLT, AGS, ALL HAVE significantly cheaper fares?

Take a look of flight tickets website and search about

Hey Frank! Thanks for your question. There are a lot of factors that come into play but it all comes back to the airlines - not the airports. We're working to get more flights, which will bring down the rates. Also, when are you booking? Giving yourself ample time and not waiting until the last minute (not saying you're doing that!) will also help. Keep checking the airlines websites and do keep considering CAE. Thank you!

Because it’s not a international airport it’s more for convenience

Good question I have no idea