I arrive much earlier than the others have written. Part of it is my own comfort level. I am happier having tea at the airport than having a nervous fit while stuck in traffic. Also, I've run into some awful lines over the past few months. Lines at check in and lines at the security stations. I have no problem arriving at least 2 hours early for domestic and longer than that for international. I don't travel to the airport with people who aren't willing to do the same. Sometimes those folks miss the flight!