It is permissible Can You Bring Food On A Plane? To carry food on an aircraft, but there are rules to go by. In general, carry-on luggage is permitted for solid food items like as sandwiches, fruits, and snacks. The TSA's 3-1-1 rule, which applies to liquids and gels such as soups, sauces, and yogurt, states that items weighing 3.4 ounces or less must be packed in a single, one-quart clear plastic bag, one bag per person.