Originally Posted by
AntimonyER
I will be doing this myself next month (flying into JFK on jetBlue), and it looks the taking the terminal loop train is the way to go. TWA is at terminal 5 same as Jetblue, so just take that one stop to terminal 4.
Originally Posted by
allikazoo
Thank you! I read the TPG article about it but it showed how you get to it from the drop off curb. I usually stay at TWA upon returning to JFK from the UK/before going the rest of the way home, not the other way around like this time. So I'm used to entering T4 from the airtrain

To get to the Airtrain from TWA, use the outdoor (mostly) covered walkway across the surface parking lot from from the hotel's main entrance, don't go through the connector to T5, that will take you the loooong way.