Let's start with the basics: fresh fruit is a great option, easy to pack and won't make a mess. Alternatively, you can opt for energy-rich nuts like almonds or cashews to keep your hunger at bay. Plus, they're super portable!
But, if you're feeling fancy, why not try making your own trail mix with a combination of nuts, seeds, and dried fruit? It's a customizable snack that's easy to prepare and fun to munch on. Just be sure to check with your airline for any food restrictions before you take off!