Traveling 10:30am BCN - Chicago. How much time do I need to allow prior to flight? Are the EES lines still long or standard 2.5hr prior to flight just fine? Thank you for any input
Departure is really not that much different than previously, so I think the recommended 3 hours for international flights would be more than sufficient, doing less is up to you.
My experience with exit is that you either will use an e-gate or a manual booth. You will scan your passport, smile for the camera, then you may or may not have to scan fingerprints (my wife did, I did not), then on your way.