The opposite effect..........again school, no school in summer.......peak tourist times, and holidays, when people fly to see love ones..so that the planes were 1/2 full, could have corresponded to the whole back to school thing...

New York City's peak tourism season generally falls into two periods: summer (June-August) and the holiday season (November-December). These months draw the largest crowds due to pleasant weather in the summer and festive holiday events