Going through the airport is a hassle for everyone. Fortunately, Business Insider made a list of mistakes you should avoid in order to go through airport security better. First, they said it's smart to dress in a way that gets through airport security easier. They wrote, "Keep your travel outfit streamlined to avoid being slowed down further... Leggings, jeans, and minimal basics work well, along with slip-on sneakers and a compact carry-on.