Originally Posted by
newyorkgeorge
Yes because with banking of hubs there are a bunch of redeyes sitting at the gates waiting for departure.
If there were other delays earlier in the day, planes might be late getting off the gate for their outbound. The A/C for the low numbered gates is under renovations so they seem to prioritize the higher numbered gates. Don't know if any of these apply to that night. JFK is a difficult place to operate for many reasons.