i get to fly out of manhattan int'l for the first time this week. what's the latest i can walk through the front door for a 3:40pm flight?
bound by the airlines policy, which is typically 30 minutes before takeoff, though that can vary based on location. You could easily do it in an hour, maybe 45 minutes if you wanted to push it. The bottleneck is security, there are 2 lines, often manned by a single TSA agent.