Security lines can be much longer — and slower — than expected, and so can the walk through a large airport. So giving yourself plenty of extra time can reduce stress. The general rule of thumb is to arrive at the airport two hours before departure for domestic flights and three hours before international flights.

Hallie Gould, editor in chief of Byrdie, a digital site for beauty care, recommends “loading up on skin hydration before your flight. That means drinking extra fluids and applying moisturizing skin products to boost hydration, so you’re covering your bases inside and out.” And don’t forget your hair.