Here's the deal: Yes, your metabolism affects your size, and the faster your personal motor runs, the more calories you'll burn. But the truth is, a slow metabolism isn't the real reason you're packing on pounds. You are the reason.
As a general rule, arrive at the airport no later than two hours before your domestic flight is scheduled to depart. This is somewhat later than the typical suggestion of three hours for an international flight.
Best Answer: I would show up at least 3 hours before the flight. You want to give yourself enough time to go through security and get to your gate. Just know that you don't want to show up to late to the gate as the gate can close 20 minutes prior to departure.