Originally Posted by
GW McLintock
If you have an Amex Platinum or Priority Pass membership, you could in theory go to a lounge in T4, however this would require switching terminals, clearing security there, and then afterwards going back to T5 and clearing security again. I'm not sure if that is worth it to you.
-J.
If OP has precheck (and if precheck at T5 is open) I’d go for it — that’s my usual routine when flying B6 out of JFK, and it’s pretty quick (especially if you’re walking between terminals which takes out some of the uncertainty of waiting for the AirTrain). Although if OP only has priority pass wingtips isn’t worth it.