Looking for experienced travelers who have navigated transfer through JFK. I just got notification that my Air France ticket for a direct flight Chicago to Paris next month (purchased through Tauck air last November) has been changed. Now I fly ORD to JFK on Republic (a Delta Connection). Then JFK to CDG on Air France (a SkyTeam partner with Delta). I was hoping to reduce the chance of lost luggage and avoid the connection hassle, not to mention now a very long travel day. I've looked at the JFK site so I've read there is an AirTrain running in the afternoon peak time every 4 to 6 minutes to shuttle from my 2:19pm arrival terminal 4 to my 4:30pm departure terminal 1. Will I need to clear security again at JFK? Arriving Paris 5:50 am! I have GOT at Intercontinental. Hope I can freshen up and store baggage until check in time.