Hi TA community, I am flying in with Delta on Friday @ 8 am and will arrive at JFK @ Terminal 2. I have a layover of 5 hrs. before continuing on Korean Air @ Terminal 1 at 2pm. Since I could use the new Delta Lounge @ Terminal 4, I am wondering how difficult it is to go back and forth between Terminals? After reading the forum, I am aware of the train for transportation, however I am not sure if you have to pass security each time and if it is even possible. The other question I have is, how much time I have to allow myself to make it from Terminal 4 to Terminal 1? (Since it is a Friday and I leave at a busy time). I like to avoid seating in a Terminal for 5 hrs.
Thank you for any information!!