Spirit Airlines carry-on size rules allow passengers to bring one free personal item, but it must fit within the airline’s specific size limits. If your bag is too large, you may have to pay additional fees. Understanding Spirit Airlines’ baggage policy can help you avoid extra costs and travel stress-free. In this guide, we’ll explain the exact size requirements, packing tips, and ways to save on luggage fees. Whether you\'re a frequent traveler or flying Spirit Airlines for the first time, knowing these rules is essential. Read on to ensure your bag meets the airline’s free carry-on size restrictions.