Yes, you can bring food on a plane. Solid foods like sandwiches, fruits, and snacks are allowed in your carry-on. However, liquids or gels, such as soups or sauces, must adhere to the 3-1-1 liquid rule: containers must be 3.4 ounces (100 ml) or less, all fitting into one quart-sized bag. Always check specific airline and international regulations for variations