On Spirit Airlines, the "free" offerings are strictly limited to ensure the lowest possible base fare. Your ticket includes one personal item (like a small backpack or purse) that must fit entirely within the small sizer box (45×35×20 cm). Beyond that, almost everything carries a fee, including carry-on bags, checked luggage, and seat assignments. Onboard, no snacks or drinks are free—not even water, which must be purchased from the menu. However, safety is always free; the airline provides the same FAA-mandated security and emergency services as any legacy carrier. In 2026, Spirit continues its "Frill-Free" model, so travelers are encouraged to bring their own empty water bottles to fill at the airport and pre-download movies on their devices, as there is no complimentary in-flight entertainment system.