Spirit Airlines charges for both carry-on and checked bags to keep ticket prices low. Passengers can bring one free personal item within size limits. Carry-on and checked baggage fees vary depending on when they are paid, with the lowest prices available during online booking. Additional charges apply for overweight or oversized luggage. Travelers can save by planning ahead and purchasing baggage allowances early. Understanding Spirit\'s baggage policy helps avoid surprise fees and keeps travel expenses in check. Be prepared and budget accordingly to make the most of your Spirit Airlines experience.