I don't want to get into a debate about the subway, but the A train goes through some really bad neighborhoods, and some passengers are simply nuts. All it takes is one nut to ruin your day for good! The presence of the conductor may not deter a crazy person.

I'm not trying to exaggerate the danger, just suggesting that other forms of transportation might be preferred by most travelers during the wee hours. Then again, how many planes arrive at JFK in the early morning?

Incidentally, I have numerous times taken the Delta red-eye from LAS to JFK, which arrives around 5:45 a.m. A taxi to Manhattan at that time takes only about 30 minutes and is really a pleasure, even if it does cost $40 (with toll and tip).

Bruce