The crate is the one element of any pet journey that the airline physically inspects before accepting your dog. It doesn't matter how perfectly organized your paperwork is or how flawless the booking looks: if the crate does not meet IATA specifications, the animal does not fly. Every year, dozens of pets are turned away at the cargo counter not because of documentation problems, but because the owner bought the wrong crate or failed to measure the dog properly.
This guide covers everything you need to know about IATA-approved dog crates: exactly what that approval means, how to measure your animal, which size corresponds to each breed, which brands are reliable, and the mistakes that cause rejection at the airport.
What does "IATA-approved" actually mean?
IATA (International Air Transport Association) publishes the Live Animals Regulations (LAR), the international standard that governs air transport of live animals. The current edition is 2026. There is no official IATA "seal" stamped on crates: no manufacturer can print "IATA Certified" with the organization's backing. What exists is conformity with LAR requirements, and it is the passenger's or freight agent's responsibility to verify that the crate meets those requirements point by point.
When an airline or an agent like Pet Cargo refers to an "IATA-approved crate," they mean a container that meets Container 10 of the LAR — the standard applicable to domestic dogs and cats in air transport. The freight agent verifies compliance; the airline confirms it at the counter.
Technical requirements: materials, door, ventilation
The LAR establishes specific requirements for each component of the container. A dog crate must meet all of them without exception:
- Material: rigid plastic, wood, metal, or fiberglass. Fabric, nylon, or soft-sided crates are strictly prohibited in cargo holds, regardless of what the manufacturer's packaging says. In-cabin rules for small dogs under the seat are different and vary by airline policy.
- Door: must be metal (not plastic) with metal hinges and at least two vertical spring-loaded bolts that cannot be forced open by pressure from the animal inside. Many budget models have plastic bolts or a single latch: they do not comply.
- Ventilation: ventilation openings on at least three sides of the container (front, left, and right, or left, right, and rear). Openings must be protected by bars or a grille so the dog cannot push its nose or paws through. Total ventilation must equal at least 16% of the total surface area of each ventilated side.
- Floor: solid, with no grille or gaps that could catch the animal's nails. The floor must retain liquids (urine or spilled water) without leaking to the outside. Many containers include an absorbent pad — this is both valid and recommended.
- Interior space: the dog must be able to stand without its head touching the ceiling, turn completely 360°, and lie down in a natural position. This is the most common failure point: owners buy based on estimated weight without measuring the dog's actual body dimensions.
- Exterior identification: "Live Animal" labels with orientation arrows on at least two sides. The airline may provide these labels, but it's best to have them already attached.
- Assembly bolts: two-piece containers (base and top) must be joined with metal bolts, not only plastic clips. The LAR requires additional hardware bolts on containers above certain dimensions. If you purchase a Petmate Sky Kennel, verify that the kit includes reinforcement bolts.
How to measure your dog correctly
Most sizing errors occur because the owner measures from memory or estimates based on the breed standard. Dogs of the same mix can vary by several centimeters. Measure with a tape measure at these four dimensions:
- Length (L): from the tip of the nose to the base of the tail (not the tip). The dog must be standing in a natural position.
- Height (H): from the floor to the highest point of the body. In dogs with upright ears, measure to the tip of the ear; in dogs with floppy ears, measure to the top of the head.
- Width (W): the widest point of the body, usually the shoulders or rib cage.
- Weight: on a scale, not estimated. Weight is the parameter many airlines use to impose cargo restrictions (dogs over 32 kg combined — animal plus crate — may require special handling).
Once you have these measurements, apply the following formulas to determine the minimum container dimensions:
- Crate length = dog length + 10 cm (4 in)
- Crate height = dog height + 10 cm (4 in)
- Crate width = dog width × 1.5
The result is the minimum acceptable dimension. If the dog falls exactly on the boundary between two commercial sizes, always choose the larger one. A slightly roomier container will not cause rejection; one that barely fits may be flagged at the counter.
Size chart: breeds and recommended crate measurements
The following table is a guide. Measurements vary by individual, breeding line, and body condition. Always verify with actual measurements of the specific animal before purchasing.
| Breed (examples) | Approx. size | Crate length (cm) | Crate height (cm) | Crate width (cm) | Petmate size |
|---|---|---|---|---|---|
| Chihuahua, Yorkshire Terrier, Maltese | XS | 46–51 | 33–36 | 30–33 | 100 / Small |
| Beagle, Cocker Spaniel, Pug | S | 56–61 | 41–46 | 38–41 | 200 / Medium |
| Border Collie, French Bulldog, Shar Pei | M | 66–71 | 51–56 | 46–51 | 300 / Intermediate |
| Labrador, Golden Retriever, Husky | L | 79–86 | 58–63 | 56–58 | 400 / Large |
| German Shepherd, Rottweiler, Doberman | XL | 91–102 | 68–74 | 61–66 | 500 / X-Large |
| Great Dane, Saint Bernard, Mastiff | XXL | 107–122 | 79–86 | 71–81 | 700 / XX-Large |
Note: brachycephalic breeds (English Bulldog, Pug, Boston Terrier, Shih Tzu) face additional airline restrictions beyond crate size. Many airlines do not accept these breeds in cargo holds or restrict them to months with moderate temperatures. Consult with us before purchasing any crate for these breeds.
Common reasons crates get rejected at the airport
After coordinating hundreds of international pet relocations, these are the rejection causes that repeat most often at the cargo counter:
- Crate too small: the dog has grown since the last measurement, or the owner estimated by weight without measuring the body. Counter staff ask to open the crate and have the dog stand inside. If the head touches the ceiling, automatic rejection.
- Plastic door or insufficient bolts: some budget brands include a metal door but with plastic bolts. They do not comply. Check the material before purchasing.
- Insufficient ventilation: crates with ventilation only on the front door do not meet the three-sided requirement. Verify the specific model, not just the brand.
- Soft-sided or fabric crate: happens when the owner purchases a crate designed for ground travel and attempts to use it on a flight. No soft-sided crate is valid for air cargo holds.
- Grille floor: some models include a plastic grille base over the tray. If the grille is not solid and the holes exceed a certain size, nails can get caught and cause injuries. Many airlines flag this.
- No reinforcement bolts: large containers assembled only with clips may be rejected on long-haul flights. Always have bolts installed and carry a spare set.
- No animal identification on the exterior: although technically not a crate failure, the animal's documentation affixed to the outside of the container is an LAR requirement. The animal's name, owner's name, destination, and contact number must be visible.
Recommended brands: where to buy in the USA and Latin America
Not all brands sold as "IATA-approved" actually meet LAR requirements. These three are the most widely used in international air transport and have a consistent track record of acceptance:
| Brand / Model | Door | Ventilation | Available sizes | Where to buy | Approx. price USD |
|---|---|---|---|---|---|
| Petmate Sky Kennel | Metal double-bolt | 4 sides | S / M / L / XL / XXL | Amazon USA, Chewy | $45 – $180 |
| Vari Kennel (Petmate) | Metal double-bolt | 3 sides | S / M / L / XL | Amazon USA, Walmart | $40 – $150 |
| SportPet Designs | Metal triple-bolt | 4 sides | S / M / L / XL | Amazon USA | $55 – $200 |
In Latin America: these brands arrive through distributors in Mexico, Colombia, Argentina, and Chile. Prices are significantly higher due to import duties and freight costs. A common alternative for trips from Latin America to the USA is to arrange the crate purchase in the US and ship it ahead, or to acquire it directly upon arrival. Pet Cargo can advise you on the most practical option based on your travel logistics.
Avoid no-name brands or marketplace listings that do not specify door material or exact ventilation dimensions. Saving money on the crate can cost you the entire flight.
Crate acclimation: the step almost nobody does
The new crate arrives at the house a week before the flight and the dog enters it for the first time on travel day. This is the most common scenario — and the most problematic. An animal that has never been confined in that space will vocalize, scratch the door, and move erratically throughout the flight. This increases oxygen consumption, raises body temperature, and can lead to heat stroke or injuries.
Crate acclimation is not a luxury or an optional protocol: it is a safety measure. The ideal process takes 3 to 6 weeks and follows this progression:
- Weeks 1–2: the crate stays open in a high-traffic area of the home (living room, kitchen). Do not force entry. Place daily meals or favorite treats inside. The goal is for the dog to associate the space with something positive and enter voluntarily.
- Week 3: begin closing the door for 10 to 20-minute periods while the owner remains visible. With no anxiety response, progressively increase to one hour.
- Weeks 4–5: sessions of 2 to 4 hours with the owner out of sight. Include a garment with the owner's scent inside the crate.
- Week 6 (if possible): at least one session of 6 to 8 hours, ideally overnight, replicating the expected longest flight duration.
A dog that enters the crate voluntarily on command and remains calm for hours is far less likely to suffer stress during the flight. This step does not replace a veterinary evaluation, but it complements it significantly.
Frequently asked questions
Does any rigid crate qualify as an IATA-approved dog kennel?
No. It must meet all requirements of IATA LAR Container 10: rigid plastic or metal construction, metal door with double spring-loaded bolts, ventilation on at least three sides, solid leak-proof floor, and enough interior space for the dog to stand, turn around, and lie down. Soft-sided or fabric crates are never valid for air cargo holds under any circumstances.
How do I calculate the correct IATA crate size for my dog?
Measure four points: length (nose to base of tail), height (floor to top of head or ears), width (widest point of the torso), and weight. Apply: crate length = dog length + 10 cm; crate height = dog height + 10 cm; crate width = dog width × 1.5. When in doubt between two sizes, always choose the larger one.
Which crate brands do international airlines accept?
The brands with the most consistently documented acceptance are Petmate Sky Kennel, Vari Kennel, and SportPet Designs. All have models that comply with the LAR. Before purchasing, verify the specific dimensions against your airline's table, as some impose size limits for pressurized holds.
How far in advance should I acclimate my dog to the IATA crate?
The recommended minimum is 3 weeks; 6 weeks is ideal. Start with the kennel open and accessible at home, progress to short closed-door sessions, and finish with multi-hour sessions. A properly acclimated dog travels with far less stress and a lower risk of injury.
Need help choosing or verifying the crate?
Pet Cargo coordinates complete pet relocations to and from the United States. As a USDA/APHIS Licensed agent (#58-T-0201) and IPATA member (#2149), we verify the crate before the flight and advise on the correct size and brand for the specific airline and destination. If you have any questions about whether your crate meets the requirements or whether the size is right for your dog, contact us with no obligation.
