spirit baggage fees charges different costs for checked baggage depending on its size, weight, and payment date. Usually, the first checked bag costs between $30 and $65; oversized or overweight luggage incur additional surcharges. Ordinary checked baggage cannot weigh more than 40 pounds or be more than 62 linear inches (length + width + height). There is an extra charge for bags between 41 and 50 pounds, and the price goes up for bags over 50 pounds. You can prevent unnecessary costs by carefully planning the weight of your luggage.