Traveling with budget airlines can help you save money, but understanding baggage policies is essential to avoid unexpected fees. If you’re planning to fly with Spirit Airlines, knowing the allowed bag sizes can make your journey smoother and more affordable. Spirit Airlines is known for its low base fares, but it charges separately for carry-on bags, checked luggage, and other extras. Therefore, understanding Spirit bag sizes is crucial before packing for your trip.
This guide covers Spirit Airlines’ baggage policies, personal item dimensions, carry-on requirements, checked bag limits, and helpful packing tips.
Understanding Spirit Airlines’ Baggage Policy
Spirit Airlines operates under an ultra-low-cost carrier model. This means the airline offers low ticket prices while charging additional fees for optional services, including baggage.
Unlike many traditional airlines, Spirit only includes one personal item in the ticket price. Any carry-on or checked luggage requires an additional fee.
Knowing the correct bag sizes can help travelers avoid expensive charges at the airport.
Spirit Personal Item Size
Every passenger is allowed one free personal item.
Maximum Personal Item Dimensions
The personal item must not exceed:
18 x 14 x 8 inches (45 x 35 x 20 cm)
This includes handles, wheels, and pockets.
Examples of acceptable personal items include:
- Small backpack
- Purse
- Laptop bag
- Briefcase
- Small tote bag
The personal item must fit completely under the seat in front of you.
Tips for Personal Item Packing
If you want to avoid baggage fees altogether, packing strategically into a personal item can save money.
Consider packing:
- Lightweight clothing
- Travel-sized toiletries
- Foldable shoes
- Electronics
- Important documents
Many travelers successfully pack for short trips using only a personal item.
Spirit Carry-On Bag Size
Spirit Airlines charges for carry-on bags unless they are included in a special fare bundle.
Maximum Carry-On Dimensions
Carry-on bags must not exceed:
22 x 18 x 10 inches (56 x 46 x 25 cm)
This measurement includes wheels and handles.
Carry-on luggage is stored in the overhead compartment.
Popular Carry-On Options
Suitable carry-on bags include:
- Rolling carry-on suitcases
- Duffel bags
- Travel backpacks
- Soft-sided luggage
Always measure your bag before traveling to ensure compliance with Spirit’s requirements.
Spirit Checked Bag Size
Passengers can purchase checked baggage separately.
Maximum Checked Bag Dimensions
The total linear dimensions (length + width + height) must not exceed:
62 inches (158 cm)
Weight Limits
Standard checked bags have a weight limit of:
40 pounds (18 kg)
This differs from many airlines that allow 50 pounds.
If your bag exceeds 40 pounds, additional overweight fees may apply.
Overweight Bag Fees
Spirit Airlines applies extra charges for bags that exceed weight limits.
Weight Categories
- 41–50 pounds
- 51–70 pounds
- 71–100 pounds
The heavier the bag, the higher the fee.
Travelers can often save money by redistributing items between bags before arriving at the airport.
Oversized Bag Fees
If a checked bag exceeds the 62-inch size limit, Spirit may charge oversized baggage fees.
Large sports equipment, oversized suitcases, and special items often fall into this category.
Always check dimensions carefully before traveling.
Best Bags for Spirit Airlines
Choosing the right luggage can help maximize packing space while staying within Spirit’s limits.
Best Personal Item Bags
Ideal choices include:
- Compact travel backpacks
- Under-seat luggage
- Laptop backpacks
- Small weekender bags
Many luggage brands now design bags specifically to fit Spirit’s free personal item allowance.
Best Carry-On Bags
Look for:
- Lightweight construction
- Durable wheels
- Expandable compartments
- TSA-approved locks
A carry-on that perfectly matches Spirit’s size requirements can help avoid unnecessary fees.
How to Measure Your Bag Correctly
Many travelers assume their luggage meets airline requirements only to discover otherwise at the airport.
To measure correctly:
Step 1: Measure Height
Measure from the bottom of the bag to the highest point, including handles and wheels.
Step 2: Measure Width
Measure across the widest section.
Step 3: Measure Depth
Measure from front to back.
Always include external pockets and protruding parts.
Packing Tips for Spirit Airlines
Use Packing Cubes
Packing cubes help organize clothing and maximize available space.
Wear Bulky Items
Wear jackets, boots, and heavier clothing during travel to save room in your bag.
Choose Lightweight Luggage
A lighter suitcase leaves more allowance for your belongings.
Limit Toiletries
Use travel-size containers to reduce weight and save space.
Roll Your Clothes
Rolling clothes often allows more efficient packing than folding.
Spirit Airlines Baggage Fees
Baggage fees vary depending on:
- Route
- Travel date
- Booking stage
Generally, purchasing baggage during booking is cheaper than paying at the airport.
Travelers should always add baggage online in advance whenever possible.
Common Mistakes Travelers Make
Ignoring Personal Item Limits
Many travelers mistakenly bring bags that exceed the free allowance.
Waiting Until the Airport
Airport baggage fees are often significantly higher.
Overpacking
Exceeding weight limits can result in costly charges.
Not Measuring Luggage
Even small size differences can trigger extra fees.
Avoiding these mistakes can save both time and money.
Spirit Airlines for Budget Travelers
Spirit Airlines remains popular because it offers some of the lowest fares available in the United States and international destinations.
Travelers who understand the baggage policy can often secure extremely affordable trips.
The key is planning ahead and packing efficiently.
Many experienced Spirit passengers travel using only a personal item, eliminating baggage fees completely.
Is Spirit’s Baggage Policy Worth It?

While some travelers dislike paying separately for baggage, others appreciate the flexibility.
Passengers who travel light benefit from lower ticket prices because they only pay for services they actually use.
For frequent budget travelers, understanding Spirit bag sizes can lead to substantial savings over time.
Final Thoughts
Understanding Spirit bag sizes is one of the most important steps when planning a flight with the airline. Spirit allows one free personal item measuring up to 18 x 14 x 8 inches, while carry-on and checked bags require additional fees and must meet specific size requirements.
By measuring your luggage carefully, purchasing baggage in advance, and packing strategically, you can avoid unexpected costs and enjoy a smooth travel experience. Whether you’re taking a weekend getaway or a longer vacation, knowing Spirit’s baggage rules will help you travel smarter and save money.
FAQs
Q1: What is the free bag size on Spirit Airlines?
Spirit allows one free personal item up to 18 x 14 x 8 inches.
Q2: How big can a carry-on be on Spirit Airlines?
Carry-on bags can be up to 22 x 18 x 10 inches, including wheels and handles.
Q3: What is the checked bag weight limit on Spirit?
The standard checked bag weight limit is 40 pounds.