For 2026 travel, Spirit Airlines defines a personal item as a small bag that must fit entirely within the smaller sizer box at the airport, with maximum dimensions of 18 x 14 x 8 inches (45 x 35 x 20 cm). This includes handles and wheels. Common examples include purses, small backpacks, laptop bags, or totes. Unlike a carry-on bag, which incurs a fee, one personal item is included for free with every ticket. It is critical that this item fits under the seat in front of you; if it is oversized and requires overhead bin space, you will likely be charged a "gate-check" fee, which in 2026 can be as high as $65 to $99. Passengers are encouraged to measure their bags before arriving at the terminal, as Spirit's low-cost model relies on strict enforcement of these dimensions. Items like umbrellas, assistive devices, and outer garments are generally not counted toward this limit.