Yes, you are absolutely allowed to bring your own snacks on Allegiant Air flights. Like most airlines, Allegiant permits passengers to bring solid food items through TSA security and onto the aircraft. Bringing your own food is actually a very smart strategy on Allegiant because, as a low-cost carrier, they do not provide any free in-flight service; all snacks and beverages on board must be purchased with a credit card. You can bring items like sandwiches, fruit, nuts, granola bars, or crackers. However, remember the TSA "3-1-1" rule for liquids: items like yogurt, hummus, or pudding are considered liquids/gels and must be in containers of 3.4 ounces or less if they are in your carry-on. Once you are past security, you can buy larger drinks or soups to bring on the plane. Bringing your own snacks not only saves you money but also ensures you have food you actually like, which is especially helpful for those with specific dietary restrictions or allergies.