Dreaming of taking your furry best friend on vacation with Allegiant Air? That sounds like a wonderful adventure! But wait—before you pack your bags, you have to tackle the big question: what carrier will actually work for Allegiant’s rules? Many pet owners feel stressed trying to figure out the exact size and material Allegiant requires. It can feel like a confusing puzzle with strict rules about in-cabin pets.
Choosing the wrong carrier means stress at the check-in counter, or worse, being turned away. You need a carrier that fits perfectly under the seat, keeps your pet safe, and meets every single one of Allegiant’s specific guidelines. Don’t let carrier confusion ruin your travel plans!
This guide cuts through the confusion. We will show you exactly what Allegiant demands for in-cabin pet carriers, list the best options that fit their requirements, and give you tips for a stress-free flight. Keep reading to find the perfect, compliant carrier so you and your companion can fly smoothly!
Top Pet Carrier For Allegiant Airlines Recommendations
No. 1
Petskd Top-Expandable Pet Carrier 19x13x9 Inches Southwest Allegiant Airlines Approved, Soft-Sided Carrier for Small Dog Under 12 lbs and Large Cat Under 15 lbs(Blue)
- 【AIRLINE APPROVED CARRIER 】Unfolded size:19"L×13"W×(9+3.5)"H, Petskd pet carrier is TSA approved and can be placed under the seat in the cabin, it is mainly designed for ①Southwest Airlines:18.5x13.5x9.5" ②Allegiant Airlines:19x16x9", but also compatible with Air Canada:21.5x15.5x10.5". We recommend you buy this carrier when you fly with the above-mentioned airlines.
- 【CHECK SIZE BEFORE BUYING】In order to fit the under-seat dimensions of airlines, this carrier can only fit small dogs. We recommend that the pet size you carry be within 17"L x 11"W x 11"H ,dog weight under 12lbs and cat weight under 15lbs. Please don't choose the carrier only based on weight but also reference your pet's length and height.
- 【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
pidipiti 17x13x8 Frontier Allegiant Breeze Airlines Approved top Expandable pet Carrier for Extra-Small Dog/Small cat,Weight up to 5 lbs,Length Shorter Than 16''
- ↓↓【Something You Need To Read Before Purchase】→→ 1.Recommended size :【extra-small dog/small cat shorter than 16'',weight is up to 5 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 16 inches. This carrier is designed specially for frontier /allegiant airlines,the height is very low(only 8 inches), SO NOT Recommend for a oversize pet.
- 2.【Designed for frontier/allegiant/breeze airlines】 size of carrier is 17''(L) x 13''(W) x 8''(H),it can be putted under the seat in cabin,it conform to the requirement of frontier / Allegiant airlines (18''x14''x8''),it also is Southwest / Spirit approved,but it is not the first choice for these airlines(9'' height carrier is a better choice),IT IS NOT APPROVED BY DELTA\UNITED AMERICAN ALASKA (13'' is more wider ).
- 3.【Expandable Top provide more space for your pet】 This carrier have a 3'' height expandable top(fully extended),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.【Stable and safety】 2 hard metal frames in 2 sides to keep stable and prevent collapse(frames only has a little elasticity to keep shape well,them can not bend to a lot lower height),a hard wood padding to prevent bottom sinking. Double zipper lock,anti-scratch mesh and a tether in carrier to prevent pet escaping.
- 5.【A carrier for multi use,match your needs in travel】 this carrier can be used for other airlines that have a more than 8 inches height under-seat,it also work in a short distance car trip,like vet visit.Adjustable shoulder strap make carrying easily,2 pockets with zippers for storing objects for your pet in travel,soft padding in bottom is washable.A adaptive training(load your pet into carrier and keep it away from anxiety) for your pet before travel is important.
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 Cats Dogs, Travel Bag with Adequate Ventilation, 5 Mesh Windows, 3 Entrance, Locking Safety Zippers, Padded Shoulder and Carrying Strap, Small
- 🐶【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 3-year warranty service, Quality problems within 3 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 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. 6
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. 7
Petskd Pet Carrier 17x12x8.5 JetBlue Allegiant Airline Approved,Pet Travel Carrier Bag for Small Cats and Dogs, Soft Dog Carrier for 1-8 LBS Pets,Dog Cat Carrier with Safety Lock Zipper(Black)
- 【AIRLINE APPROVED CARRIER 】Unfolded size:17"L×12"W×8.5"H, Petskd pet carrier is airline approved and can be placed under the seat in the cabin, it is mainly designed for ①JetBlue Airlines:17x12.5x8.5" ②Allegiant Airlines:19x16x9", but also in compliance with ③Southwest Airlines:18.5x13.5x9.5" ④Spirit Airlines:18x14x9". 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.
- 【QUALITY GUARANTEE】: Petskd offers a 12 months after-sale service, quality problems within 12 months can be replaced on new models. So if you have any problems with your product, please contact us by amazon message and we will get back to you as soon as possible within 24 hours.
No. 8
Petskd Top and Side Expandable Pet Carrier 17x12x8.5 Inches JetBlue Frontier 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 9"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+5)"W×(8.5+3.5)"H, Petskd pet carrier is TSA approved and can be placed under the seat in the cabin, it is mainly designed for ①JetBlue Airlines:17x12.5x8.5"②Spirit Airlines:18x14x9"③Frontier Airlines:18x14x8", but also in compliance with ④Allegiant Airlines:19x16x9"⑤Southwest Airlines:18.5x13.5x9.5". We recommend you buy this carrier when you fly with the above-mentioned airlines. When you take the carrier on airplane, please fold the top and side expansion areas for the size of airline seat.
- 【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.
The Ultimate Buying Guide: Traveling with Your Pet on Allegiant Air
Flying with your furry friend requires careful planning. Allegiant Air has specific rules for in-cabin pet carriers. Choosing the right carrier makes the trip smooth for you and comfortable for your pet. This guide helps you find the best carrier for your journey.
Key Features to Look For
When shopping, focus on features that meet airline rules and keep your pet safe.
- Size Compliance: This is the most important feature. Allegiant requires the carrier to fit completely under the seat in front of you. Measure the under-seat space on your specific aircraft type if possible. The carrier dimensions must match the airline’s current published limits.
- Soft-Sided Design: Most airlines prefer soft-sided carriers. They flex slightly, making it easier to slide them under the seat. Hard-sided carriers rarely fit the required dimensions.
- Ventilation: Look for mesh panels on at least three sides. Good airflow keeps your pet cool and calm.
- Top or Side Entry: While under-seat placement is key, an easy-access door helps you settle your pet before takeoff.
- Waterproof Bottom: Accidents happen. A leak-proof bottom protects your seat and keeps the carrier clean.
Important Materials
The material affects durability, weight, and comfort.
Most quality pet carriers use durable polyester or nylon fabric. These materials resist tearing and are easy to wipe clean. Ensure the frame uses lightweight but sturdy metal or plastic tubing. Heavy carriers eat up your carry-on weight allowance. Zippers should be strong and lockable for extra security.
Factors That Improve or Reduce Quality
Quality directly impacts how well the carrier performs during travel.
What Boosts Quality?
- Sturdy Construction: Carriers that hold their shape well, even when empty, offer better protection.
- Comfort Padding: A removable, washable fleece or memory foam pad inside gives your pet a soft place to rest.
- Airline Approval Tags: Some manufacturers clearly state which airlines their carriers fit. This saves you checking measurements repeatedly.
What Lowers Quality?
- Flimsy Zippers: Cheap zippers often break or snag, which is dangerous mid-flight.
- Weak Stitching: If the seams look thin, the carrier might fail under stress.
- Poor Ventilation: Carriers with only one small mesh window create a stuffy, stressful environment for your pet.
User Experience and Use Cases
Think about how you will use the carrier daily, not just on the flight.
A good carrier should be easy to carry through the airport. Look for comfortable, padded shoulder straps and strong handles. If you travel often, consider a carrier that collapses flat for easy storage at home. For nervous pets, carriers that allow you to partially cover the mesh sides can create a den-like, secure feeling.
Remember, the carrier must allow your pet to stand up, turn around, and lie down naturally while inside, even when fully zipped for the flight. This is a standard requirement for pet safety.
10 Frequently Asked Questions (FAQ) About Allegiant Pet Carriers
Q: What is the exact size limit for Allegiant in-cabin carriers?
A: Allegiant’s exact dimensions can change. You must check the official Allegiant website right before booking. Generally, soft-sided carriers must fit under the seat, usually around 18″ x 14″ x 8″ or similar, but always confirm the current rule.
Q: Can I use a hard-sided carrier on Allegiant?
A: It is very difficult. Hard carriers rarely fit the strict under-seat dimensions. Allegiant strongly recommends soft-sided carriers because they conform better to the space.
Q: How many pets can travel in one carrier?
A: Only one pet is allowed per carrier. Your pet must have enough room to move comfortably inside.
Q: Does the pet carrier count as my carry-on bag?
A: Yes. The pet carrier counts as your one personal item or carry-on bag. You usually cannot bring a second standard carry-on bag onto the plane.
Q: Do I need to remove my pet from the carrier at security?
A: Yes, generally you must take your pet out of the carrier for the X-ray screening process at TSA checkpoints.
Q: What kind of paperwork does Allegiant require?
A: Allegiant usually requires proof of vaccination, often rabies, but they do not always require an official health certificate unless traveling internationally or to specific states.
Q: Can I open the carrier during the flight?
A: No. For the entire duration of the flight, including taxiing and boarding, the pet must remain completely inside the fully closed carrier.
Q: What should I do if my carrier is slightly too big?
A: If the gate agent deems the carrier too large, they may require you to check the pet into cargo or deny boarding. Always buy a carrier known to fit the standard under-seat measurements.
Q: Are there specific requirements for the water dish?
A: Carriers must have a leak-proof bottom. While a small, spill-proof water dish attached to the side is helpful, ensure it does not interfere with fitting under the seat.
Q: What are the fees for bringing a pet in the cabin?
A: Allegiant charges a non-refundable pet fee each way. This fee is subject to change, so check their current fee schedule when booking your ticket.