Originally Posted by
MSPeconomist
If OP has any other AmEx card, OP can pay to use the Centurion lounge, IIRC $50 per person per visit. There's also one at LGA, but OP is flying through JFK.
AMEX LGA lounge is not really accesible when flying DL as in a different terminal (need a 15 min bus ride).
AMEX LGA lounge is basically useless though for the airlines in the main terminal as it is presecurity. I have no interest in a lounge that is pre-security