Spirit Airlines Checked Baggage Policy is designed to offer flexibility at competitive rates. Passengers must pay for checked luggage, with fees depending on the route, time of booking, and bag weight. Standard weight is 40 lbs, and excess baggage may incur additional charges. Bags must not exceed 62 linear inches. Spirit encourages pre-purchasing baggage online to save on airport fees. Oversized and overweight items face extra costs. Travelers are advised to review current fees before flying.