What time to get to Dublin Airport at for flight?

So in today's question file we are tackling the question "How early do I need to arrive at Dublin Airport?".

My first response to this question is a question.  Where are you from?

If the answer is the United States, you actually need to be at Dublin Airport 3 hours early.  Those going to the United States clear US customs in Dublin.  Also keep in mind once you clear customs you will have limited food and shopping options, but WIFI is still available.

For most other countries 2 hours will do.  Dublin Airport does not see particularly long, nor particularly short lines.  Of course this will vary.