Originally Posted by
Lead Balloon
A frequent contributor to this topic over many, many years has said that the primary cause of the problem is: lack of concrete. That's short hand for not enough runway, not enough aircraft gates and not enough aircraft parking area. The gist of their point is that no amount of air traffic control can cure a lack of concrete.
You can build as many runways as you like but, at the end of the day an airport's "capacity" will be determined by the ability of the surrounding airspace (and those who "manage" it ) to deliver aircraft to those runways and accept aircraft departing from them. And that other stuff LB mentioned.
Gne