With just one terminal, GNU isn’t the busiest airport around. That said, be sure you arrive with plenty of time up your sleeve to check in your bags and pass through security. We don’t want you to miss your flight!For domestic flights, aim to arrive 1.5-2 hours before take off. If you’re travelling internationally, arrive 2-3 hours in advance to ensure enough time for checking bags, security lines and making your way to your gate.