Originally Posted by
tvdxer
Another question...do I have to come up to the desk at my gate and register or check in or anything, or can I just board the plane when they call like on a domestic flight? Also, does Spain have outgoing customs (for when I leave)?
No, once you have your ticket, you could board your plane just like a domestic flight. In Spain, you'll have your passport looked at (and maybe get asked a few questions) before you get to the gate area. It's really quick. Once you're at the gate there, you'll board the plane just like regular domestic flights. Enjoy your trip!