Hope I'm not posting in the wrong spot as this is kind of a concern for me. I wanted to get an answer before booking my flight. I'm from the USA and am traveling to Europe this Summer. I'll be in Amsterdam for four days to start off. After that, I fly from Amsterdam to Ibiza while connecting in Barcelona. Do I have to go through customs in Barcelona before connecting to Ibiza since I'll be entering a new country? Or will I go through customs in Ibiza? Or will I not be going through customs at all since this is travel within the EU. Or is there a different customs point at Barcelona for non-EU residents? I just wanted to know as the approximate wait time (if I have to go through customs in Barcelona) affects which flight itinerary I book. Thanks for the help. Sorry if this is a stupid question. I've never booked a seperate flight itinerary within an overall trip while traveling abroad.