Traveling with your furry companion can be stressful, but having the right-sized pet carrier makes the journey much smoother. Airlines have specific regulations for in-cabin pet carriers, so choosing one that will fit under the seat in front of you is essential. We’ll cover everything: what size pet carrier will fit under an airline seat, how to pick the suitable size carrier, tips for measuring your pet, and review some excellent carriers we recommend.
Airline Pet Carrier Size Regulations
Before purchasing a pet carrier, check with the airline you’ll travel with regarding their in-cabin pet restrictions. While regulations are similar across airlines, there can be slight variations regarding maximum dimensions and weight.
The most common maximum dimensions for under-seat carriers are:
- Length: 18 inches (45 cm)
- Width: 11 inches (28 cm)
- Height: 9.5 inches (24 cm)
These dimensions accommodate cats, small-medium dogs up to 20 pounds, and larger dogs. Airlines have separate regulations for pets traveling in cargo, which we won’t cover here.
Regarding weight, most airlines restrict under-seat carriers to pets weighing up to 20 pounds, including the carrier. So, if your carrier weighs 5 pounds, your pet cannot exceed 15 pounds.
Always measure your pet carrier to ensure it follows the airline’s stated dimensions before traveling. While some airlines may allow slightly oversized carriers, others refuse to let you fly if it doesn’t fit their sizing box. Don’t take any chances!
Choosing the Right-Sized Pet Carrier
You want your pet to be comfortable in their carrier without feeling cramped or having to hunch over. Here are some tips for selecting the right-sized under-seat airline carrier:
- Please measure your pet in multiple positions: Standing, sitting, and lying down. Their carrier needs to accommodate their most extensive measurements.
- Allow extra room to stand, sit, and turn around: Your pet should have enough room to move, stand up, sit, lie down, and turn around comfortably in their carrier.
- Prioritize height: Since under-seat storage space is minimal vertically, pay close attention to your pet’s standing height. They need to sit and stand at full height inside their carrier.
- Consider growth: If you have a growing puppy or kitten, size up to allow room for growth on your trip. You don’t want them to outgrow their career mid-journey!
- Match pet size to carrier: Avoid too big carriers and allow your pet to toss around. But also don’t squeeze them into an undersized carrier. The perfect fit keeps them cozy and stable.
- Factor in extras: Leave room inside the carrier for a water bowl, treats, blanket, or other items you may want.
How to Measure Your Pet Correctly
Measuring your standing and seated pet accurately is crucial in finding an appropriately sized airline carrier. Here are some tips:
- Use a soft measuring tape: A flexible cloth or plastic measuring tape will bend to get proper measurements. Avoid rigid measuring tools.
- Measure on floor level: Place your pet on the floor or ground and crouch down to their level for the most accurate measurements.
- Measure from above for height: Stand over your seated pet and measure from the top of their head to the floor to get their seated height. Measure from the top of their head to the toe pads with them standing to reach their full height.
- Measure length: Have them stand sideways and measure from the tip of their nose to the base of their tail. Allow extra length if their tail is very long.
- Measure width: With your pet facing forward, measure across their widest point – usually the chest or shoulders.
- Measure in multiple positions: For comparison, get all measurements with your pet, sitting and standing.
- Average measurements: Take 2-3 measurements in each position and average them for the most accurate sizing analysis.
Top Airline Approved Pet Carriers
Now that you know how to measure your pet and what size is allowed, here are some excellent under seat airline carriers to consider:
Sherpa Original Deluxe Pet Carrier
- Stylish faux lambskin design
- Mesh panels for ventilation
- Padded carry straps
- Leash/harness slot
- Zipper lock for security
- 18” x 11” x 10.5” size
The Sherpa Original Deluxe carrier features a cozy lambskin-like design that pets and owners adore. It’s airline-approved and comes in various sizes to fit any small dog or cat.
Petpeppy Expandable Pet Carrier
- Expands from 16″ to 19″ length
- Sturdy wired mesh walls
- Padded fleece bedding
- Storage pockets for extras
- Padded shoulder strap for comfort
- 18” x 11” x 10” size
The Petpeppy Expandable carrier is excellent for growing puppies or kittens. Its adjustable length gives extra room while still fitting under seats as needed.
Petmate Compass Kennel
- Durable plastic shell with wire vents
- Ergonomic carry handle
- Hinged locking door
- 18” x 10.5” x 10.5” size
- It comes in 3 sizes for pets up to 30 lbs
The Petmate Compass Kennel offers a sturdy plastic carrier that mny pet parents prefer over soft-sided options. It’s well-ventilated and secure for anxious travelers.
Sleepypod Air In-Cabin Pet Carrier
- Ultra-durable ballistic nylon
- Mesh dome for panoramic views
- Patented pass-through luggage strap
- Padded shoulder strap with pocket
- 18” x 10.5″ x 9.5” size
For luxury travel, the Sleepy pod Air Carrier has superior construction with a comfortable mesh dome interior perfect for small dog breeds.
Airline Pet Carrier Tips and Tricks
- Permanently attach food and water bowls inside the carrier so they can’t spill during the flight. Hydrating is crucial when traveling with pets.
- Pack potty pads and cleaning supplies in case of accidents.
- Use zip ties or carabiners to secure doors and prevent escape artists.
- Affix a label with your contact info to the top and sides of the carrier for identification.
- Place a familiar worn t-shirt or blanket in the carrier to soothe anxious pets.
- Ask the airline about early boarding to get your pet under the seat with less stress.
- Consider a collapsible carrier that can tuck away easily in your luggage when not in use.
Frequently Asked Questions
What is the best pet carrier for flying?
The Sleepypod Air and Sherpa Original Deluxe carriers consistently top the charts for quality construction, comfort, airflow, and ease of use while meeting all airline regulations.
Can a cat fit under an airline seat?
Yes, as long as the carrier is within the approved dimensions of 18″ long x 11″ wide x 9.5″ high. Ensure your cat can fully stand up and turn around inside their carrier.
Can I take a large dog on a plane?
Large dogs will not fit under airplane seats. You must book them as cargo or transport them through special pet relocation services. Some airlines have weight limits of around 70 pounds for cargo dogs.
How much does it cost to fly with a pet?
Airline pet fees are usually $125 each way. Be sure to factor this cost in when booking a flight. Some airlines may restrict the number of pets allowed per flight or blackout dates.
What is the best airline for pet travel?
JetBlue, Southwest, and Alaska Airlines are consistently ranked among the best for pet travel based on their reasonable fees, good pet amenities, and overall pet-friendly policies.
Final Thoughts
The key to smooth airline travel with a pet is finding an appropriately sized carrier that follows the dimension limits for under-seat storage. Be sure to accurately measure your standing and seated pet in all positions and leave them enough room to move around. Compare your pet’s size to airline regulations before purchase. Among the latest airline innovations that will revolutionize the flight experience, soft-sided carriers equipped with ample ventilation and padded straps stand out, ensuring your beloved pet enjoys a cozy and comfortable journey. Remember to pack the necessary potty pads and treats! With the right under-seat carrier, you and your furry co-pilot will be traversing the skies in unparalleled style.
