With the updated JFK schedule, JFK could be one option for same-plane-turnarounds. The plane stays on the ground from 14:40 to 19:05, giving ample time to pass through formalities. You could even have late lunch in Jamaica center if you want to experience a black Queens neighbourhood.

In Y, earnings are bad but there are sometimes good J JV campaigns. I remember booking an I fare for €1300 in July 2017.