Originally Posted by
CPH-Flyer
You can do online check in. But as the AA lounges close overnight I am not sure they will let you in the day before your flight. You should also check if the terminals are open overnight, or you will be sent out after the last flight.
I would guess you are arriving on a separate ticket in to JFK. Otherwise you'd get your boarding passes with that flight. You have noted that AA and JAL are not in the same terminal?
Yep I have a whole thread on my overnight stay in the terminals in case you are interested:
Layover in JFK from midnight til 11am
My main concern is whether I can get my jal boarding pass by checking in online. I've had mixed success with that with other airlines so was wondering about user experiences with JAL on flights leaving jfk