Want to Fix New York Air Congestion? Shut Down LaGuardia

The problem, as he explained it, is that the airspace for each of the three airports extends cylindrically into the sky above its ground position. Because of their relative proximity, the three airspace cylinders affect one another significantly, which creates congestion not just because of volume but because pilots have to thread the needle and fly needlessly intricate approach routes in order to comply.
If the LaGuardia cylinder were eliminated, he said, Newark and J.F.K. would both operate much more freely — and, since LaGuardia handles far less traffic than the other two airports, it is the obvious choice for shuttering.
But there’s a problem: LaGuardia is the favored airport of the people with the most political power in New York, since it is a very short ride from Manhattan. So it’s unlikely to happen, at least anytime soon. But if it did, my new pilot friend insisted, New York air travel would move from nightmare to dream.

Trivia: between 1am and 5am (aka no traffic) I can get from my apartment to any of the three airports in 18 minutes.