Top 5 Spirit Airlines Pet Carriers: Essential Buying Guide

Planning a trip with your furry friend on Spirit Airlines? You might be wondering: will my pet actually fit comfortably under that small seat? Traveling with a pet brings extra worries, especially when airline rules seem confusing. Finding a carrier that meets Spirit’s exact size requirements can feel like a puzzle. You want your beloved companion to be safe and cozy, but you definitely don’t want a last-minute gate hassle!

Many pet owners face stress trying to balance Spirit’s specific dimensions with the need for a roomy, secure carrier. A carrier that’s too big gets rejected; one that’s too small causes discomfort for your pet. This guide cuts through the confusion. We break down exactly what Spirit requires so you can choose with confidence.

Keep reading to discover the best, approved carriers that guarantee a smooth boarding experience. We will show you the must-have features and the exact measurements you need. Say goodbye to travel anxiety and get ready for a stress-free flight with your four-legged co-pilot!

Top Pet Carrier For Spirit Airlines Recommendations

No. 1

Petskd Top-Expandable Pet Carrier 17x12x8.5 Inches JetBlue Allegiant Spirit Airline Approved, Soft-Sided Carrier for Small Cats and Dogs with Locking Safety Zippers and Anti-Scratch Mesh(Black)

【CHECK SIZE BEFORE BUYING】In order to fit the under-seat dimensions of airlines, this carrier can only fit small dogs and cats. We recommend that the pet size you carry be within 14"L x 9"W x 8"H(this carrer's inner size), please choose the carrier reference your pet's length and height. Reference pet weight: dog weight under 8LBS and cat weight under 10LBS.
【AIRLINE APPROVED CARRIER 】Unfolded size:17"L×12"W×(8.5+3.5)"H, Petskd pet carrier is TSA approved and can be placed under the seat in the cabin(after remove the wheel base), it is mainly designed for ①JetBlue Airlines ②Allegiant Airlines ③Spirit Airlines ④Frontier Airlines, but also in compliance with ⑤Southwest Airlines. We recommend you buy this carrier when you fly with the above-mentioned airlines.
【BETTER VENTILATION】Petskd pet carrier has mesh ventilation on 5 sides for good ventilation and good viewing—perfect for your pet to look out and for you to check on your pet;the Dog carrier has 3 openings, and each opening has two non-slip zippers to ensure pet safety.
【SAFE DESIGN】Soft dog travel carrier bag upgraded structural design of stainless steel and Fiber rod that makes our dog carrier bags for small dogs will not be out of shape or sagged and the top does not collapse, pet dog carrier bag preferable stability. Built-in adjustable rope buckle, easy to lock the collar. Zipped snap lock to avoid pets to open or grab open the zipper.
【DURABLE MATERIAL】Made of waterproof, non-toxic, scratch-resistant polyester fabric material, waterproof and wear-resistant; after comparing similar products, we upgraded the mesh material to effectively prevent pets from tearing the mesh with their nails and prevent pets from falling out of the carrier.

No. 2

Petskd Top-Expandable Pet Carrier 17x12x8.5 Inches JetBlue Allegiant Spirit Airline Approved, Soft-Sided Carrier for Small Cats and Dogs with Locking Safety Zippers and Anti-Scratch Mesh(Blue)

【CHECK SIZE BEFORE BUYING】In order to fit the under-seat dimensions of airlines, this carrier can only fit small dogs and cats. We recommend that the pet size you carry be within 14"L x 9"W x 8"H(this carrer's inner size), please choose the carrier reference your pet's length and height. Reference pet weight: dog weight under 8LBS and cat weight under 10LBS.
【AIRLINE APPROVED CARRIER 】Unfolded size:17"L×12"W×(8.5+3.5)"H, Petskd pet carrier is TSA approved and can be placed under the seat in the cabin(after remove the wheel base), it is mainly designed for ①JetBlue Airlines ②Allegiant Airlines ③Spirit Airlines ④Frontier Airlines, but also in compliance with ⑤Southwest Airlines. We recommend you buy this carrier when you fly with the above-mentioned airlines.
【BETTER VENTILATION】Petskd pet carrier has mesh ventilation on 5 sides for good ventilation and good viewing—perfect for your pet to look out and for you to check on your pet;the Dog carrier has 3 openings, and each opening has two non-slip zippers to ensure pet safety.
【SAFE DESIGN】Soft dog travel carrier bag upgraded structural design of stainless steel and Fiber rod that makes our dog carrier bags for small dogs will not be out of shape or sagged and the top does not collapse, pet dog carrier bag preferable stability. Built-in adjustable rope buckle, easy to lock the collar. Zipped snap lock to avoid pets to open or grab open the zipper.
【DURABLE MATERIAL】Made of waterproof, non-toxic, scratch-resistant polyester fabric material, waterproof and wear-resistant; after comparing similar products, we upgraded the mesh material to effectively prevent pets from tearing the mesh with their nails and prevent pets from falling out of the carrier.

No. 3

Petskd Top-Expandable Pet Carrier 17x12x8.5 Inches JetBlue Allegiant Spirit Airline Approved, Soft-Sided Carrier for Small Cats and Dogs with Locking Safety Zippers and Anti-Scratch Mesh(Grey)

【CHECK SIZE BEFORE BUYING】In order to fit the under-seat dimensions of airlines, this carrier can only fit small dogs and cats. We recommend that the pet size you carry be within 14"L x 9"W x 8"H(this carrer's inner size), please choose the carrier reference your pet's length and height. Reference pet weight: dog weight under 8LBS and cat weight under 10LBS.
【AIRLINE APPROVED CARRIER 】Unfolded size:17"L×12"W×(8.5+3.5)"H, Petskd pet carrier is TSA approved and can be placed under the seat in the cabin(after remove the wheel base), it is mainly designed for ①JetBlue Airlines ②Allegiant Airlines ③Spirit Airlines ④Frontier Airlines, but also in compliance with ⑤Southwest Airlines. We recommend you buy this carrier when you fly with the above-mentioned airlines.
【BETTER VENTILATION】Petskd pet carrier has mesh ventilation on 5 sides for good ventilation and good viewing—perfect for your pet to look out and for you to check on your pet;the Dog carrier has 3 openings, and each opening has two non-slip zippers to ensure pet safety.
【SAFE DESIGN】Soft dog travel carrier bag upgraded structural design of stainless steel and Fiber rod that makes our dog carrier bags for small dogs will not be out of shape or sagged and the top does not collapse, pet dog carrier bag preferable stability. Built-in adjustable rope buckle, easy to lock the collar. Zipped snap lock to avoid pets to open or grab open the zipper.
【DURABLE MATERIAL】Made of waterproof, non-toxic, scratch-resistant polyester fabric material, waterproof and wear-resistant; after comparing similar products, we upgraded the mesh material to effectively prevent pets from tearing the mesh with their nails and prevent pets from falling out of the carrier.

No. 4

Wakytu TSA Approved Pet Carrier for Small Medium Cats and Dogs | Dog Carrier with Adequate Ventilation | 4 Mesh Windows, 3 Entrance, Locking Safety Zippers, Padded Shoulder Strap, Black

🐶【CHECK SIZE BEFORE PURCHASE】In order to match the airline's under-seat size, this carrier can only accommodate small dogs and cats. We recommend that you carry pets that measure 17.7 "long x11" wide x8.3 "high and weigh under 13LB cat or 9LB dog. Please do not only choose the luggage rack based on the weight, but also refer to the length and height of the pet. Maximum size requirements of major airlines for soft-sided pet carriers: ①American Airlines: 19x13x9"②United Airlines: 18x11x11"③Southwest Airlines: 18.5x13.5x8.5"④Alaska Airlines:17x11x11"⑤Air Canada:21.5x15.5x10.5"⑥Delta Air Lines: 21.5x15.5x10.5"
🐶【3 ENTRANCES & 5 SIDE VENTILATION】: The zippered design of the top, front and side entrances of the case makes it easy to put in and carry out your pet, making it faster and easier to remove your pet from pet carrier while traveling through security checks. 5 breathable mesh windows are designed to enhance visibility and ventilation, which can make them feel relaxed and calm.
🐶【STURDY & WASHABLE】: ①Wakytu cat carrier's 8mm fiber frame provides enough support to prevent the top from sagging. ②This pet carrier floor mat has a built-in 4mm honeycomb panel that is sturdy and durable to prevent the base from sagging when carried. ③The bottom is equipped with soft cushions for your pet to rest, and also absorbs moisture and some stains for easy cleaning.
🐶【WATERPROOF & ANTI-ESCAPE】: This cat carrier is made of high quality polyester fabric, strong and durable, light weight and waterproof. The rip-stop mesh design is not easily broken and prevents your pet from scratching, clawing or chewing through the pet bag in stressful situations. Built-in adjustable rope buckle, easy to lock the collar. Zipped snap lock to avoid pets to open or grab open the zipper.
🐶【QUALITY GUARANTEE】: Wakytu offers an 1-year protection plan, Quality problems within 1 years can be replaced for free new models. So if you have any problems with your product, please feel free to contact us by email and we will get back to you as soon as possible within 24 hours.

No. 5

Petskd Top-Expandable Small Pet Carrier with Wheels (17" L x 12" W x 8.5" H), JetBlue/Allegiant/Spirit Airlines Approved, Rolling Pet Carrier for Small Dogs & Cats (Black)

【CHECK SIZE BEFORE BUYING】This carrier is very small in order to fit the under-seat dimensions of airlines, it can only fit small dog and cat. Measure your pet's length, width, and height when standing and sitting. We recommend that the pet size you carry be within 14"L x 9"W x 8"H(this carrer's inner size), please choose the carrier reference your pet's length width and height to ensure the comfort of your pet.
【AIRLINE APPROVED CARRIER】Unfolded size: 17"L × 12"W × (8.5 + 3.5)"H – expandable top adds 3.5". Petskd pet carrier is TSA approved and can be placed under the seat in the cabin (after removing the wheel base and collapsing the top of the carrier). It is designed mainly for ①JetBlue Airlines ②Allegiant Airlines ③Spirit Airlines ④Frontier Airlines, and also complies with ⑤Southwest Airlines. We recommend this carrier if you fly with the airlines listed above. Notice: Please check your airline’s website or contact the airline directly for their specific pet carrier size requirements.
【EASY ASSEMBLY AND DISASSEMBLY】Equipped with 4 high-quality 360° rotating wheels, it ensures a smooth and quiet rolling experience even on uneven ground or grass. Unlike other pet carriers with wheels that rely on multiple Velcro straps to attach the bag to the wheeled base, the Petskd wheeled pet carrier features an ultra-simple assembly design. Just snap the support rods onto both sides of the wheel frame, and you can easily insert or remove the carrier bag in seconds. This saves your time especially when traveling by air, and avoids disturbing your pet’s rest for a more pleasant journey. (This product is protected by an invention patent.)
【PET SAFETY】Made of waterproof, non-toxic, scratch-resistant polyester fabric, this carrier is both water-repellent and wear-resistant.Compared with similar products, we have upgraded the mesh material to effectively prevent pets from tearing it with their claws and keep them from falling out. It comes with a built-in adjustable leash clip for securely attaching your pet’s collar. The zippers are equipped with safety snaps to prevent pets from opening or prying the zippers and escaping.
【PET COMFORTABLE】This soft dog travel carrier adopts an upgraded structural design with inner metal frame, which ensures our small dog carrier will not deform, sag or collapse at the top, boasting excellent stability. This carrier is designed with 5-sided mesh ventilation, providing good air circulation and clear visibility—perfect for your pet to look out and for you to check on your pet conveniently. Moreover, the soft and machine-washable mat inside ensures a more comfortable and cozy journey for your beloved pet.

No. 6

GAPZER Cat Carrier 18x11x11 United Airline Approved, Top Loader Heavy Duty Softshell Pet Flying Bag 18lbs, Small Dog Chihuahua Crate 5-10 Pounds, Kitty Transport Kennel, Miniature Poodle Case Navy

Spacious Soft-Sided Pet Carrier - 18x11x11 inch crate comfortably fits medium size pets, such as cats weighing 15-25 lbs or 10 pounds small dogs like Yorkies & Shih Tzus with room to stretch
Escape-Resistant - Self-locking zipper sliders prevent clever kitties from opening this animal carrying bag from the inside while traveling. Reinforced 600D oxford fabric prevents anxious cats or little dogs from claw damage
360° Ventilation & Dual-Entry - Four-sided mesh ensure constant airflow during transport, while the wide top opening and side door facilitate stress-free transfers and quick check-ins for rabbits and puppies
Stress-Free Travel Ready Bag - Adjustable, detachable shoulder strap allows for hands-free carrying for doggies during airports trips or vet visits. Collapsible case can be stored flat for convenient storage
Car-Safe Cage & Convertible Storage - Unzip side panels to thread seatbelts or luggage handle sleeve, ensuring the safely of your Chihuahuas. Zip closed to convert into compact storage pockets for doggy toys or poodle treats

No. 7

Lekereise Top-Expandable Pet Carrier 18x13x9.5 Inch Southwest Frontier Airline Approved Soft Sided Underseat to 15lbs Travel Carriers for Small Cats Dogs with Locking Safety Zippers Anti-Scratch Mesh

AIRLINE APPROVED CARRIER - Pet carrier for dog cat is TSA approved and placed under the seat in the cabin, mainly designed for ①Frontier Airlines, ②Southwest Airlines, We suggest checking carrier size with the airline before traveling. Kindly note: pet size you carry be within 17"L x 12"W x 8.5"H (inner size) and weight recommended max load of 15 LBS small cats and dogs, Please refer to your pet's length and height to choose the size of the carrier
EXPANDABLE SPACE - Top-expandable designe Gaining more space to move around. It is easy for pets to stand and stretch, also creates a safe environment to avoid stress reactions anxiety while traveling
BETTER BREATHABILITY - The small dog cat carrier has breathable mesh on three sides for a breathable, wide-open view for your pet to look out and for you to view and communicate with your pet
MORE SAFELY - The pet carrier for dog cat is designed with upgraded structure of stainless steel and fiber rods, it is deformation or sagging, collapse and better stability. Zipper snap lock prevents pets from opening or scratching the zipper open
STURDY FABRIC - Comparison of similar products made of waterproof, non-toxic, scratch-resistant and wear-resistant new fabrics, mesh material has been upgraded to effectively prevent pets from tearing the mesh with their nails, preventing pets from falling out of the pet carrier for dog cat

No. 8

pidipiti 18x13.5x9 TSA Approved top Expandable Rolling pet Carrier for Small Dog Puppy cat up to 8 lbs and 17'' in,Soft Sided for Spirit Southwest Airline,with 4 Wheels and 2 Pockets(Grey).

1.【Designed for Spirit/Southwest airlines】size of carrier is 18(L) x 13.5(W) x 9(H),it can be putted under the seat in cabin,it conform to the requirement of some airlines like Southwest / Spirit, We suggest that contacting with airlines to confirm size before purchase. IT IS NOT APPROVED BY DELTA\UNITED AMERICAN airlines (longer and wider than 18 x 11 x 11) or ALASKA (longer and wider than 17x11x9.5).
2.【With 4 double wheels and double pull rod,carry your pet easily】This carrier have a metal base,with 4 removable double wheels and metal adjustable double pull rod.Double wheels is more stable and ligther than the single one when rolling,double pull rod is adjustable with three different lengths,more durable than the single one.your can install carrier on metal base, carry your pet in carrier, pull it through the airport,then remove carrier off metal base,put carrier under the seat in cabin.
3.【Expandable part provide more space for your pet】This carrier have a 3'' height expandable top,you can fold it down to put carrier under seat in cabin and pull it up to giving more space for pet in other travel time.Not like other similar products, expandable top in our product have a 5 sides meshes to provide better Air mobility and 360 degrees visual field for your pet.
4.Recommended size :【small dog length is shorter than 17'',weight is under 8 lbs(cat up to 10 lbs)】 5-8 lbs fit best,very roomy even too large for dog under 5 lbs, a little small for dog 8-10 lbs,too small for dog byond 10 lbs.Please measure your pet length firstly,length is more important than weight to judge a pet can be carried or not. Make sure your pet is shorter than 17'',width is less than 13".DO NOT BUY THIS FOR adult medium / large dog or large cat.
4.Recommended size :【small dog length is shorter than 17'',weight is under 8 lbs(cat up to 10 lbs)】 5-8 lbs fit best,very roomy even too large for dog under 5 lbs, a little small for dog 8-10 lbs,too small for dog byond 10 lbs.Please measure your pet length firstly,length is more important than weight to judge a pet can be carried or not. Make sure your pet is shorter than 17'',width is less than 13".DO NOT BUY THIS FOR adult medium / large dog or large cat.

The Ultimate Buying Guide: Flying Your Pet with Spirit Airlines

Traveling with your furry friend can be exciting! Spirit Airlines has rules for bringing pets in the cabin. You need the right carrier. This guide will help you pick the best one.

Key Features to Look For

When you shop for a Spirit Airlines pet carrier, look for a few important things.

Airline Compliance: The carrier must fit under the seat in front of you. Spirit Airlines requires soft-sided carriers. Hard-sided ones usually do not fit. Check the exact dimensions Spirit allows.
Ventilation: Your pet needs fresh air. Look for mesh windows on at least three sides. This lets your pet see out and keeps them cool.
Comfort: The carrier should be big enough for your pet to stand up, turn around, and lie down comfortably.
Security: Zippers should be strong. Some carriers have clips or loops so you can lock the zippers shut. This keeps your pet safe inside.

Important Materials

The material affects how long the carrier lasts and how easy it is to clean.

Most approved carriers use durable, water-resistant fabric. Canvas or nylon works well. These materials are light. This helps you stay under Spirit’s weight limits. Make sure the bottom padding is removable. You can wash the padding easily. Avoid very thin materials. They tear easily and do not protect your pet well.

Factors That Improve or Reduce Quality

Good quality means a better trip for you and your pet.

What Makes a Carrier Great?

Sturdy Frame: Even soft carriers need a strong frame. This keeps the shape when you place it under the seat.
Shoulder Strap: A good, padded shoulder strap makes carrying easier at the airport.
Outside Pockets: Pockets are great for holding your pet’s documents, a small water bottle, or treats.

What Lowers the Quality?

Flimsy zippers break fast. If the carrier smells strongly of chemicals when you first open it, the materials might be cheap. Carriers that collapse too easily offer little protection.

User Experience and Use Cases

Think about how you travel.

If you carry your pet often through busy terminals, you want a carrier with wheels or a good strap system. For short trips to the airport, a simple, lightweight carrier is fine. Always try fitting the carrier under a seat at home first. This gives you confidence before you fly. Never try to force a pet into a carrier that is too small. A stressed pet makes the whole experience harder.

10 Frequently Asked Questions (FAQ) About Spirit Pet Carriers

Q: What is the maximum size for a Spirit pet carrier?

A: Spirit Airlines usually requires carriers to be small enough to fit under the seat in front of you. While exact dimensions can change, look for carriers around 18″ x 14″ x 8″. Always check Spirit’s current official website before buying.

Q: Can I use a hard plastic carrier on Spirit?

A: No. Spirit Airlines strongly prefers or requires soft-sided carriers. Hard carriers do not bend to fit under the seat.

Q: Does my pet count as a carry-on item?

A: Yes. The pet carrier counts as your one personal item. You usually cannot bring a separate carry-on bag in addition to the pet carrier.

Q: Do I need a health certificate for my pet?

A: This depends on where you are flying. For domestic US flights, you often do not need one, but always check the airline and destination rules.

Q: Are there specific colors Spirit prefers?

A: No. Spirit does not have color rules for carriers. Choose a color you like!

Q: How do I make my pet comfortable in the carrier?

A: Introduce the carrier to your pet weeks before the flight. Put familiar blankets and treats inside. Never leave the pet in the carrier for too long before the flight.

Q: Where does the carrier go during the flight?

A: The carrier must stay completely under the seat in front of you for the entire flight. You cannot place it in the overhead bin.

Q: What is the fee for bringing a pet in the cabin?

A: Spirit charges a pet fee. This fee changes, but it is usually a flat rate each way. You pay this fee at the airport check-in desk.

Q: Can I use a carrier with wheels?

A: If the carrier is soft-sided and meets the size limits, you can use it. However, wheels add bulk. Make sure the wheels do not make the carrier too tall to fit under the seat.

Q: What if my carrier seems too big at the gate?

A: If the gate agent thinks the carrier will not fit, they might ask you to try fitting it under the seat. If it truly does not fit, Spirit may require you to check the pet as cargo, which is much more expensive and stressful.