Frequently it is stated as fact that JFK doesn't have the room to grow.
Can we get some hard numbers on the the availability for potential aircraft movements across a 24hr cycle?
I suspect that this JFK constraint is actually a myth that just gets perpetuated on here. Outside of some very busy times, I think JFK actually has a good amount of slack. Not every flight or every geography needs to be flown or can be flown in the 6pm to 8pm hours. (example: asia)