Originally Posted by
KARFA
No, the bag drop for connections is post customs and landside, and you definitely need to go through security again regardless of whether you have a bag to drop or not - there is no airside sans-security connection route at JFK (or at any US airport I can think of) for an INT-DOM connection.
If arriving at around 23:00 on a BA inbound and then leaving on an AA domestic at 06:00, can the bags be dropped off immediately or would you have to wait until AA check in opened in the morning?