Spirit Airlines is famous for its ultra-low base fares, but those cheap tickets come with strict baggage rules. If you want to avoid surprise fees at the gate, you need to understand the airline’s personal item policy.
Knowing what actually qualifies as a personal item—and exactly how big it can be—helps you avoid expensive fees. It also makes boarding much less stressful because you know your bag will fit.
Here is everything you need to know about Spirit’s personal item size limits, packing strategies, and what happens if your bag is too big.
Key Takeaways
- Spirit Airlines allows one free personal item per passenger.
- The dimensions for personal items on Spirit are 18 x 14 x 8 inches. There is no official weight limit.
- A purse, small backpack, or laptop bag usually qualifies.
- Use a soft-sided bag and packing cubes to maximize your space.
- If your bag is too big, the airline will charge you a heavy fee at the gate.
What is considered a personal item on Spirit Airlines?
On Spirit Airlines, a personal item is any small bag that fits completely under the seat in front of you. This usually includes purses, laptop bags, small backpacks, or compact duffels.
The airline allows you to bring one of these for free with your ticket. You should use it for essentials you need during the flight, like electronics, medications, or a book. But the label on your bag doesn’t matter as much as its actual dimensions. If your backpack is too bulky to slide beneath the seat, Spirit will classify it as a carry-on, meaning you will have to pay an extra fee.
Knowing the difference between a free personal item and a paid carry-on is the easiest way to keep your flight cheap.
Dimensions and weight restrictions for personal items on Spirit Airlines
The maximum dimensions for a personal item on Spirit Airlines are 18 x 14 x 8 inches (45 x 35 x 20 cm). This measurement includes handles, straps, and wheels. It is strictly enforced so that bags do not stick out into the aisles and block the walking path.
Unlike checked bags, Spirit does not have a weight limit for personal items or carry-ons. As long as your bag fits the required dimensions and you can safely lift it, you can pack it as heavy as you want. Just keep in mind that you still have to carry it through the airport and wrestle it under the seat. If the bag gets too stuffed, it might bulge and exceed the size limits anyway.
Products Worth Considering
SAVE ON YOUR CARRY-ON CHARGES - This travel bag measures 17.7 x 12.6 x 6.3 inches, making it the perfect fit for the 18 x 14 x 8-inch personal item size requirements of Spirit Airlines and Frontier Airlines. It can be placed under the seat to help you avoid oversize charges.
【Save On Carry-On Fees】Sized 18 × 13.5 × 8 inches, this personal item travel bag meets the Spirit and Frontier Airlines limit perfectly. It slides easily under the seat, helping you avoid baggage fees while keeping your essentials within reach throughout your journey.
THICK SERIES - Pay a bit little more, you would get a personal item bag much more durable and thicker than similar products, no need to worry any ripping or break during trips. No extra shoulder strap is included for model 1112. If you prefer to have a strap, pls refer to model 3112 or 1109
Tips for maximizing your personal item on Spirit Airlines
| Tip | Description |
|---|---|
| Choose the right personal item | Grab a soft-sided backpack or tote bag that fits within the exact dimensions. |
| Use all available space | Fill exterior pockets with small items like chargers or snacks. |
| Pack efficiently | Roll your clothes tightly and use compression cubes. |
| Wear heavy layers | Put on your thickest jacket and bulkiest shoes for the flight to free up bag space. |
| Watch the bulge | Overstuffed soft bags might measure wider than the strict 8-inch limit. |
Packing strategically is the best way to survive a flight with just a personal item. Start by choosing a soft-sided backpack or tote bag. Flexible bags are much easier to squeeze into tight spaces than rigid mini-suitcases.
Next, use packing cubes or compression bags. These squeeze the extra air out of your clothes, taking up much less space and keeping everything organized so it fits snugly under the seat.
Finally, wear your heaviest clothes on the plane. Put on your thickest sweater and your bulkiest shoes. You can always take your coat off once you sit down, and this simple trick frees up a massive amount of room inside your bag.
Products Worth Considering
FRONTIER-APPROVED PERSONAL ITEM SIZE: Fits perfectly under all airline seats (15.74"x12.2"x5.51") including Frontier Airlines personal item bag requirements. Save baggage fees with this lightweight carry on backpack for airplanes – slides effortlessly into overhead bins or seat compartments
FRONTIER-APPROVED PERSONAL ITEM SIZE: Fits perfectly under all airline seats (15.74"x12.2"x5.51") including Frontier Airlines personal item bag requirements. Save baggage fees with this lightweight carry on backpack for airplanes – slides effortlessly into overhead bins or seat compartments
Flight-Approved Personal Item Backpacks: Sized at 16.5 × 11.5 × 7 inches & 20L a capacity for Medium. Featuring a 180-degree bidirectional zipper closure, these backpacks enable quick and easy security checks. Ideal for travel, they fit both overhead and under-seat compartments. Compliant with most airline regulations personal item regulations. Pritent travel backpacks offer the perfect blend of functionality and style, making them a must-have for any traveler.
Consequences of not complying with personal item size restrictions
If your personal item is too big, you will have to pay up. Spirit strictly enforces its baggage policies. If your bag exceeds 18 x 14 x 8 inches, the gate agent will charge you a standard carry-on fee. Paying for a bag at the boarding gate is the most expensive way to do it—often costing upwards of $99.
If the flight is fully booked and the overhead bins are full, you might even be forced to check the bag. This slows down the boarding process and means you have to wait at the baggage carousel when you land. The easiest way to avoid these headaches is to measure your bag at home.
Products Worth Considering
35L Large Capacity & Smart Pockets: 18×8.7×13.5 inches (35L) spacious design fits 2-3 days of travel essentials. Interior: 2 pockets + 1 waterproof wet bag (for swimsuits/towels). Exterior: side pockets (water bottle/umbrella), front/back zippered pockets (keys/phone), keeping items organized
✈【Large Capacity & Multiple Pockets】: The travel backpack has a 40L large capacity and 4 main compartments, which can meet daily and travel needs. The travel backpack for women's main compartment can store a lot of things, including 5-8 pieces of clothing, shoes, books, and many other items. The separate laptop compartment is padded with EVA foam to provide the best protection for your 17" laptop and 12.9" iPad. The front compartment has many pockets to keep your belongings organized.
Premium Material: Spirit airline personal item bag is made of waterproof, tear-resistant polyester with reinforced stitching to avoid tearing or breaking while traveling. The travel bag comes with a smooth and sturdy two-way zipper.
Alternatives to consider if your personal item is too big
If your favorite bag is too large for Spirit’s rules, you have a few options. First, you could buy a bag specifically designed for budget airlines. Many luggage brands now sell travel backpacks tailored perfectly to the 18 x 14 x 8-inch limit.
Alternatively, take a hard look at your packing list. Remove items you can buy at your destination, like heavy shampoo bottles. If you are traveling with a partner, share items like phone chargers and toothpaste. If you simply cannot cut down your luggage, pay for a carry-on bag during the online checkout process. It is significantly cheaper to add a bag when booking your ticket than waiting until you reach the airport.
Products Worth Considering
Flight Approved Carry on Backpack: The TSA backpack for travel measures 17*12*8 inches and weighs 0.8 kg(1.76 lbs). This travel backpack for women men traveling features a 180 degree zipper closure to help you pass through security check quickly, compliant with airline carry-on requirements. Can be a personal item travel bag and weekender bags for wowen fits overhead bin or under the seat and save on paying any extra baggage fees
【SAY NO TO BAGGAGE FEES】: The ECOHUB 25L Carry On Bag is perfectly sized to meet United Airlines' personal item requirements. Measuring 17" x 10" x 9" and weighing just 1.6 lbs, it fits neatly under the seat. It’s also compatible with Spirit, Frontier, EasyJet and many other airlines. (Patent Pending)
【LARGE AND MULTIFUNCTIONAL DESIGN】The daily clothes pocket can hold 4-6 pieces of thin tops or pants, which can meet the needs of short trips or business trips for 2-3 days; it can also be used to store college stationery such as books, and the separate laptop compartment can accommodate a maximum of 15.6” laptop for your work or study needs in companies and universities
Watch Out for the Gate Sizers
Gate agents use metal boxes called “sizers” to check bag dimensions. If your bag looks bulky, they will ask you to place it inside the personal item sizer. The bag must slide in easily. If you have to shove or force it, the agent may reject it and charge you a fee.
Products Worth Considering
THICK SERIES. Pay a bit little more, you would get a personal item bag much more durable and thicker than similar products, no need to worry any ripping or break during trips. No extra shoulder strap is included for model 1112. If you prefer to have a strap, pls refer to model 3112 or 1109
【AVOIDING BAGGAGE CHARGES ON FLIGHT】: ECOHUB Airplane travel backpack have the perfectly sized to avoid baggage fees. The underseat carry on bag measures 18x13x7.8 inch and has a capacity of 30L, with a weight of 1.6lb. Suitable for all major airlines like spirit, frontier, easyjet.
Extra Shoe Bag & Wet Pocket: Large carry on backpack for women includes a bonus shoe bag to keep shoes separate from clothes and prevent dirt from spreading in your bag. The wet pocket of suitcase school backpack for travel purse is ideal for storing swimsuits, toiletries, helping keep the rest of your items dry. The thoughtful design makes the travel laptop backpack for shcool women perfect for travel, everyday use. The travel backpack with water bottle pocket fits a Stanley 30 oz (900ml) cup
How to measure and pack your personal item for Spirit Airlines
Always measure your bag before you leave for the airport. Use a tape measure to check the length, width, and height. Measure from the widest points, including any side pockets, top handles, and wheels.
When you start packing, place heavier items at the bottom so the bag doesn’t tip over. Pack smaller, flexible items like socks or underwear into the gaps between larger objects. Put your electronics and anything you need during the flight near the top zipper for easy access. Roll your clothes tightly instead of folding them. This creates extra room and helps a soft bag maintain its shape.
Frequently asked questions about Spirit Airlines’ personal item size restrictions
Travelers often ask if specific types of bags count as personal items. Spirit does not care about the style of your bag. As long as it measures 18 x 14 x 8 inches or smaller and fits under the seat, it counts as your free item.
If you arrive at the gate with an oversized bag, the agent will make you pay a penalty fee to bring it on board. Measuring your bag at home and packing light are the best ways to keep your travel costs low.
To help fit your clothes into that tiny space, you might want to read our guide to the “5 Must-Have Packing Cubes for Your Spring 2025 Getaway.” Packing cubes compress your gear, making it much easier to hit Spirit’s strict dimensions. Check out the article here for more information on how to pack efficiently for your next trip.
FAQs
What is the size of a personal item on Spirit Airlines?
The size of a personal item on Spirit Airlines must not exceed 18 x 14 x 8 inches, including handles and wheels.
What are examples of personal items on Spirit Airlines?
Examples of personal items include a purse, small backpack, or laptop bag, as long as it easily fits under the seat in front of you.
Can I bring a personal item for free on Spirit Airlines?
Yes. Spirit Airlines allows passengers to bring one personal item for free as long as it meets the size requirements.
What happens if my personal item is larger than the allowed size on Spirit Airlines?
If your personal item is larger than the rules allow, you will have to pay an additional gate fee to treat it as a carry-on, or they may force you to check the bag entirely.
Can I bring a personal item and a carry-on bag on Spirit Airlines?
Spirit Airlines charges a fee for all carry-on bags. If you want to bring both a free personal item and a larger carry-on, you will need to pay for the carry-on.