Yes, you can absolutely take ziplock bags of snacks on a plane in 2026. Security agencies like the TSA generally allow all solid food items in carry-on luggage, provided they are wrapped or contained. Ziplock bags are actually the preferred method for many travelers because they are transparent and easy for X-ray machines to scan. Common snacks like nuts, crackers, fruit, and sandwiches are perfectly fine. However, you must be careful with "liquid-adjacent" snacks; items like yogurt, hummus, or peanut butter are subject to the 100ml (3.4 oz) rule and must fit within your single quart-sized liquids bag. If you are flying internationally, remember that many countries have strict customs laws regarding fresh produce or meat; while you can eat your apple or ham sandwich during the flight, you may have to discard any leftovers before passing through customs at your destination to avoid heavy fines for transporting agricultural products.