Traveling with your beloved pet can be an exciting adventure, but navigating airline regulations is often the most challenging part. When flying Southwest Airlines, selecting the perfect pet carrier that meets their specific requirements is crucial for a smooth and stress-free journey for both you and your furry companion. As an experienced pet product technician, I understand the importance of comfort, safety, and compliance, ensuring your pet’s travel experience is as pleasant as possible.
Understanding Southwest Airlines’ Pet Policy
Southwest Airlines welcomes small, vaccinated domestic cats and dogs in the cabin on domestic flights. To be eligible, pets must be at least eight weeks old. This means you can’t bring pets on international flights or flights to Hawaii. Your pet’s carrier will count as either a personal item or a carry-on item, so you can bring the carrier plus either a personal item or a regular-sized carry-on bag. Each ticketed customer is allowed one pet carrier, and that carrier can comfortably accommodate up to two small cats or dogs of the same species. For the safety and comfort of everyone onboard, your pet must remain securely inside their carrier at all times while in the gate area, during boarding and deplaning, and for the entire duration of the flight. Space for pets in the cabin is limited, so it’s highly recommended to make a reservation in advance by calling Southwest Airlines. Be aware that a fee applies for pet travel, typically paid at the airport ticket counter.
Southwest Airlines Approved Pet Carrier Dimensions
The single most critical factor when choosing a pet carrier for Southwest Airlines is its dimensions. Southwest states that pet carriers must have maximum dimensions of 18.5 inches (L) x 13.5 inches (W) x 9.5 inches (H). Both hard-sided and soft-sided carriers are accepted, but soft-sided carriers are often a better choice because their flexible nature allows them to compress slightly, making it easier to fit them under the airplane seat. Regardless of the type, your chosen carrier must always fit completely under the seat in front of you.
Beyond external dimensions, ensure the carrier provides adequate space for your pet. Your furry friend must be able to stand up, turn around, and lie down in a natural position comfortably within the carrier. Good ventilation is also a must, with plenty of mesh windows to ensure proper airflow and allow your pet to see their surroundings, which can help reduce anxiety during travel. Choosing a leak-proof carrier is also essential to prevent any accidents from affecting other passengers or the aircraft.
Types of Pet Carriers Suitable for Southwest Flights
When preparing for air travel with your pet, understanding the different carrier types can help you make an informed decision that suits both your pet’s needs and Southwest’s guidelines.
Soft-Sided Carriers (Tote/Bag Style)
Soft-sided carriers are a popular choice for airline travel due to their inherent flexibility.
- Pros: They are lightweight, often feature stylish designs, and their collapsible nature makes them excellent for squeezing under airplane seats, even if they’re slightly above the height limit when fully expanded. Many come with comfortable shoulder straps or handles for easy carrying through the airport.
- Cons: While flexible, they offer less rigid protection than hard-sided options. It’s crucial to ensure the material is durable enough to prevent tears or escapes.
- Best for: Small dogs and cats who are calm travelers and for owners prioritizing ease of portability and fitting the carrier into tight spaces.
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Our Picks for the Best Pet Carrier in 2026
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| Num | Product | Action |
|---|---|---|
| 1 | Texsens Innovative Traveler Bubble Backpack Pet Carriers for Cats and Dogs (Black) |
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| 2 | Dog Sling Carrier, Puppy Carrier Purse with Storage Pocket, Hand-Free Dog Carrier Sling for Carry Small Dogs and Cats, Puppy Essentials (Purple) |
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| 3 | Top and 2 Sides Expandable Large Cat Carrier 18x13.5x9.5, TSA Airline Approved Dog Carriers for Large Dogs, Soft-Sided Pet Carrier with Self-Locking Zippers for Kitten,Rabbit,Puppy, Black White |
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| 4 | Pet Carrier for Large Cats, Soft-Sided Cat Carrier for Medium Big Cats and Puppy up to 20lbs, Washable Dog Carrier Privacy Protection for Home Outdoor Travel |
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| 5 | Henkelion Cat Carriers Dog Carrier Pet Carrier For Small / Medium Cats Dogs Puppies (Up To 15lbs), TSA Airline Approved Small Dog Carrier Soft Sided, Collapsible Waterproof Travel Puppy Carrier - Grey |
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| 6 | Morpilot Cat Carrier - Cat Carrier Soft for Medium or Large Cats up to 20lbs, with Dual-Sided Cushion, Secure Buckle and Foldable Bowl, Dog Carriers for Small Dogs - Pet Carrier (Dark Gray) |
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| 7 | Amazon Basics 2-Door Top-Load Hard-Sided Dogs, Cats Pet Travel Carrier, Gray & Blue, 22.8"L x 15.0"W x 13.0"H |
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| 8 | Henkelion Cat Carriers Dog Carrier Pet Carrier for Small / Medium Cats Dogs Puppies (Up To 15lbs), TSA Airline Approved Small Dog Carrier Soft Sided, Collapsible Waterproof Travel Puppy Carrier -Black |
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| 9 | Cat Carrying Case Pet Dog Carrier Soft-Sided Cat Bag Airline Approved, Pet Travel Carrier Up to 15 Lbs, Collapsible Cats Carrier Dog Carrier for Medium Small Cats Dogs(17x11x11 Green) |
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| 10 | Lekereise Cat Backpack Carriers, Dog Carrier Backpacks with Breathable Mesh for Small Medium Cats Dogs Puppy Up to 17 Lbs, Pet Foldable Carrying Backpack Ventilated for Travel Hiking Collapsible |
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Backpack Pet Carriers
Backpack carriers offer a hands-free solution for navigating busy airports.
- Pros: They allow you to keep your pet close while leaving your hands free for luggage or boarding passes. Many are designed with ventilation and a comfortable interior for your pet.
- Cons: These can sometimes be trickier to fit under the seat, particularly if they have a rigid frame or are too tall when upright. Accessing your pet during the flight might also be more challenging.
- Best for: Very small, calm pets who are comfortable being carried on your back, and for owners who need maximum hands-free mobility. Always double-check the dimensions, especially the height, against Southwest’s requirements.
Rolling Pet Carriers
Rolling carriers provide an excellent option for transporting heavier small pets or for owners who prefer not to carry weight.
- Pros: Wheels make maneuvering through large airport terminals much easier, reducing physical strain. They often have sturdy construction.
- Cons: The added bulk of wheels and a handle can sometimes make them too large to fit under an airplane seat, even if the carrier body itself is compliant. You might need to ensure the wheels are removable or that the entire unit collapses significantly. They are generally heavier than soft-sided alternatives.
- Best for: Owners traveling with slightly heavier small pets or those with mobility considerations, provided the carrier’s dimensions (including wheels and handle) strictly adhere to Southwest’s under-seat requirements.
Comparison Table: Pet Carrier Types for Southwest
| Feature | Soft-Sided Carrier | Backpack Carrier | Rolling Carrier |
|---|---|---|---|
| Size/Fit | Excellent (flexible) | Good (check height) | Varies (check overall size) |
| Durability | Medium | Medium | High (with frame) |
| Ventilation | Good | Good | Good |
| Convenience | High (light, easy carry) | High (hands-free) | High (mobility for heavier pets) |
| Cost | Medium | Medium | High |
Essential Features to Look for in a Southwest Approved Pet Carrier
Choosing an airline-approved pet carrier involves more than just meeting size limits; it’s about ensuring your pet’s safety and comfort throughout the journey. Consider these vital features:
Size & Flexibility
Always prioritize carriers that fit Southwest’s maximum dimensions of 18.5″ L x 13.5″ W x 9.5″ H. For soft-sided carriers, look for designs that offer some flexibility in height, allowing them to conform to the under-seat space. A carrier with a slightly soft top or sides can be invaluable. However, your pet should never be squashed; they must still be able to stand, turn around, and lie down naturally.
Material & Durability
The carrier’s material should be sturdy, non-toxic, and easy to clean. Look for tear-resistant mesh on windows and strong, reliable zippers that won’t give way during travel. A waterproof or water-resistant bottom is also a significant advantage, helping contain any potential accidents and making cleanup simpler.
Ventilation
Ample ventilation is crucial for your pet’s comfort and health, especially in enclosed spaces. Choose carriers with multiple mesh windows or panels to ensure excellent airflow. These windows also allow your pet to see out, which can reduce anxiety by providing visual stimulation and a sense of connection to you.
Safety & Security
Security features are paramount to prevent escapes. Opt for carriers with self-locking zippers or clips that prevent your pet from pawing them open. An interior leash clip is another essential safety feature, allowing you to secure your pet within the carrier, preventing them from bolting if the carrier is accidentally opened.
Comfort for Pet
A comfortable interior can significantly reduce travel stress. Look for carriers with a soft, removable, and washable fleece or faux-lambskin pad. This provides a cozy spot for your pet and is easy to clean after the trip. The carrier should be spacious enough for your pet to shift positions comfortably without feeling cramped.
Convenience for Owner
Consider features that make your life easier. External pockets are perfect for storing treats, waste bags, or important documents. Comfortable, padded shoulder straps or handles are a blessing when navigating busy airports. Some carriers also feature a luggage strap, allowing you to slide them over the handle of your rolling suitcase for ultimate convenience.
Top Recommendations for Southwest Approved Pet Carriers
When selecting a top-tier pet carrier for your Southwest journey, prioritize designs that blend airline compliance with ultimate pet comfort and owner convenience.
The Flexible Soft-Sided Travel Carrier consistently stands out. Its genius lies in its pliable structure, which can gently compress to fit snugly beneath an airline seat, even if its stated dimensions are slightly larger when fully rigid. These carriers typically feature multiple large mesh panels for superior ventilation and visibility, often a top-loading option for easier pet entry, and a cozy, machine-washable fleece bed inside. Many also include secure, self-locking zippers and an internal leash clip, offering peace of mind that your pet is safe throughout the flight.
For those seeking extra space for their pet during layovers or while waiting at the gate, an Expandable Soft-Sided Carrier is an excellent choice. While adhering to Southwest’s standard dimensions when collapsed for under-seat stowage, these carriers feature zippered mesh sections that expand outward, providing a much larger lounging area when the aircraft is stationary. This thoughtful design allows your pet to stretch out comfortably without leaving the secure confines of their carrier, significantly enhancing their travel experience. Look for durable, scratch-resistant mesh in the expandable sections and a robust frame that maintains shape when expanded.
Lastly, a Well-Designed Backpack Pet Carrier can offer unparalleled hands-free convenience. The best models for Southwest travel are those with a somewhat rectangular base that can easily be rotated and stowed under the seat without tipping or compromising pet comfort. These typically feature ergonomic shoulder straps for the owner, ample ventilation, and a firm bottom to prevent sagging. While their height needs careful checking, their ability to keep your pet close and free up your hands for other tasks makes them a favorite for many travelers with very small, well-behaved pets.
“A common mistake travelers make is buying a carrier that’s ‘airline approved’ but not specifically checking the dimensions for their chosen airline. Always verify Southwest’s exact size requirements before purchasing to avoid last-minute airport stress.” – Admin, ReviewNeko.com, Pet Product Expert
Conclusion
Traveling with your pet on Southwest Airlines can be a wonderful experience if you’re well-prepared. The key to a smooth journey lies in selecting a pet carrier that not only meets Southwest’s strict dimension requirements but also prioritizes your pet’s comfort and safety. From understanding the airline’s policies to choosing between flexible soft-sided options, convenient backpacks, or sturdy rolling carriers, every decision contributes to a better travel experience. By focusing on essential features like proper ventilation, secure closures, and adequate interior space, you can ensure your beloved companion travels in comfort and style. Plan ahead, double-check those dimensions, and you and your pet will be ready for your next adventure.
What essential features do you prioritize most when choosing a pet carrier for air travel?
Frequently Asked Questions
How much does it cost to fly a pet on Southwest?
Southwest Airlines typically charges a one-way fee for pets traveling in the cabin. This fee is usually around $95 to $125 per pet carrier and must be paid at the airport ticket counter. Prices are subject to change, so always confirm the current fare with Southwest directly before your trip.
Can I take a hard-sided carrier on Southwest?
Yes, Southwest Airlines accepts both hard-sided and soft-sided pet carriers. The most important factor is that the carrier, regardless of its type, adheres strictly to the maximum dimensions of 18.5″ L x 13.5″ W x 9.5″ H and can fit completely under the seat in front of you.
How many pets can travel in one carrier on Southwest?
You can have up to two small, vaccinated domestic cats or dogs of the same species in a single carrier, provided they are both able to stand up, turn around, and lie down comfortably within the carrier without touching each other or the sides.
Can my pet come out of its carrier during a Southwest flight?
No, for the safety and comfort of all passengers and your pet, your pet must remain inside its carrier at all times while in the gate area, during boarding and deplaning, and throughout the entire flight. The carrier must be stowed under the seat in front of you.
What happens if my pet carrier is too big for Southwest?
If your pet carrier exceeds Southwest’s specified dimensions or cannot be stowed properly under the seat, your pet may be denied boarding. It is crucial to measure your carrier carefully and ensure it meets all requirements to avoid any last-minute issues at the airport.
