Spirit Airlines allows up to five checked bags 40 pounds or less and 62 linear inches or less for the standard bag fee. Luggage larger or heavier incurs an additional overweight or oversized fee, with a maximum weight of 100 pounds and maximum size of 80 linear inches.
Each checked bag increases the baggage fees charged for the flight. Travelers save money with reduced baggage fees by paying during the online booking process. The fees are one way and are much higher at the airport. Spirit Airlines allows one small personal item on the plane, but additional carry-on bags also incur a fee. This structure keeps the pricing lower for those who don't need carry-on bags or checked luggage.