Spirit Airlines Checked Baggage Policy is designed to offer low fares while allowing flexibility. Passengers can purchase checked bags during booking or later, with prices varying based on route and timing. Standard checked bags must not exceed 62 linear inches or 40 pounds, with overweight or oversized fees applying. Early booking ensures the lowest bag fees. Spirit encourages customers to prepay online for savings. Travelers should review Spirit's website for specific route-based pricing and size restrictions. Understanding the checked baggage policy helps avoid surprises at the airport and ensures a smooth boarding process. Stay informed and travel stress-free with Spirit.