Originally Posted by
AATrout
Get there early - around 0430- 10m to park and get to the terminal - finding a parking spot should not be a problem. But in addition to ~ 0600 AA departures to MIA, DFW, ORD and JFK - the center pier also serves some US and UA departures at that hour. And it's summer. More crowded than you would expect that early with a lot of families and inexperienced parents, nonetheless 15-20 minutes max in screening if you can't access the elite lane. That should get you to the AC at the 0500 opening.
Very few US departures at that hour. The middle pier is home to US's EMB170/175 operation and all of those planes are going to be connector flights coming from other cities (BDL, CVG, MHT and the like). They won't come into the middle pier until the 7:00 am hour, so the loads at 5:30 won't be heavily flooded with US passengers.