I usually arrive about 2 hours before flight time. For one thing, my car company doesn't really want you to cut things close as they'll tend to catch the blame

I usually arrive about 2 hours before flight time. For one thing, my car company doesn't really want you to cut things close as they'll tend to catch the blame if you miss your flight for some unavoidable reason. But usually security is maybe 5-10 minutes. Don't remember the last time I needed anything like the margin that I give myself. Probably doesn't hurt that I'm usually taking early morning flights.