What Are the IATA Live Animal Regulations?
The International Air Transport Association (IATA) publishes the Live Animal Regulations (LAR) — the global standard for transporting animals by air safely and humanely. These regulations are updated annually and adopted by over 300 airlines worldwide.
The 2026 edition (50th edition) includes specific requirements for pet containers used in both cabin and cargo/hold transport. Airlines may have additional requirements on top of IATA standards, but they cannot be less strict.
Important disclaimer: PetFlyCheck is an independent compliance checking service. We are not affiliated with IATA, any airline, or any government body. Always verify requirements directly with your airline before travel.
The 8 IATA Crate Compliance Criteria
According to IATA Container Requirement 82 (CR82) for dogs and cats, your pet's travel crate must meet the following criteria:
1. External Dimensions
Minimum Size Formula
Length = A + ½B | Width = C × 2 | Height = D (standing height)
Where A = nose to tail base, B = ground to elbow, C = shoulder width, D = ground to ear tip
Your pet must be able to stand up, turn around, and lie down comfortably in a natural position. The crate should be large enough for these movements but not excessively large — too much space can cause injury during turbulence.
2. Ventilation Openings
Minimum 16% ventilation on at least 3 sides
Openings must be in the upper third of the container walls
Adequate ventilation ensures proper airflow throughout the journey. Ventilation holes must be small enough that the animal cannot get its nose, paws, or claws through them (maximum diameter: 25mm / 1 inch for dogs, 19mm / 0.75 inch for cats).
3. Door & Latch Security
Metal bolts/locks required for cargo transport
Plastic latches are NOT acceptable for hold/cargo travel
The door must open outward and have at least two secure locking points. For cargo/hold transport, metal hardware is mandatory — plastic clips or squeeze latches will result in rejection. Cable ties should be used as backup securing, not as primary locks.
4. Floor & Absorbent Layer
Leak-proof, non-slip surface required
Absorbent material must be present (bedding, pee pads)
The floor must prevent liquids from leaking out of the container. A solid, leak-proof tray with absorbent material (like veterinary bedding or absorbent pads) is required. Loose newspapers or towels alone are insufficient — they must be secured to prevent bunching.
5. Food & Water Access
External access food and water containers
Must be fillable without opening the main door
For journeys exceeding 4 hours (including layovers), food and water containers with external access are mandatory. This allows airline staff to refill them without opening the container. Spill-proof containers that attach to the door or container walls are recommended.
6. Labeling Requirements
"Live Animal" labels + orientation arrows
Owner contact information must be visible
Required labels include: "LIVE ANIMAL" stickers (green, min. 10cm × 15cm) on at least two sides, "THIS WAY UP" arrows on all four sides, and a label with owner name, address, phone number, and emergency contact. Feeding and watering instructions must also be attached.
7. Material Compliance
Rigid construction for cargo, flexible for cabin (size limits)
Must withstand stacking and handling without collapsing
For cargo/hold transport, crates must be made of fiberglass, rigid plastic, metal, or solid wood. The construction must be escape-proof and bite-resistant. Soft-sided carriers are generally only allowed for in-cabin transport and must fit under the seat.
8. Airline-Specific Rules
Additional requirements vary by carrier
Always check your specific airline's pet policy
Individual airlines may impose additional requirements. For example, some airlines require specific crate brands (Vari Kennel, Sky Kennel), ban certain breeds from cargo, or have maximum combined weight limits (pet + crate). Always verify with your airline at least 2 weeks before travel.
Crate Size Reference Chart
| Pet Size | Weight Range | Min. Crate Size (L×W×H) | Examples |
|---|---|---|---|
| Small (S) | Up to 10 lbs / 4.5 kg | 48×33×35 cm (19×13×14 in) | Chihuahua, small cats |
| Medium (M) | 10-25 lbs / 4.5-11 kg | 63×45×45 cm (25×18×18 in) | Beagle, Cocker Spaniel, large cats |
| Large (L) | 25-50 lbs / 11-23 kg | 81×56×59 cm (32×22×23 in) | Labrador, Golden Retriever |
| Extra Large (XL) | 50-90 lbs / 23-41 kg | 102×69×76 cm (40×27×30 in) | German Shepherd, Boxer |
| Giant (XXL) | 90+ lbs / 41+ kg | 122×81×89 cm (48×32×35 in) | Great Dane, St. Bernard |
Note: These are minimum sizes. Always measure your specific pet and apply the IATA formula for accurate sizing.
Cabin vs. Hold vs. Cargo: What's the Difference?
In-Cabin Travel
For pets traveling in the cabin (under the seat), soft-sided carriers are typically allowed. Maximum dimensions are usually around 43×30×20 cm (17×12×8 in), though this varies by airline. Combined weight (pet + carrier) is usually limited to 8-10 kg (17-22 lbs).
Checked Baggage (Hold)
Pets can travel as checked baggage in the pressurized, temperature-controlled hold. IATA-compliant rigid crates are mandatory. Your pet travels on the same flight as you, and you're responsible for check-in and pickup.
Cargo
For pets traveling as manifest cargo (often required for larger animals or unaccompanied pets), even stricter requirements apply. Cargo shipments require documentation, may involve specialized pet transport companies, and have additional IATA requirements.
Frequently Asked Questions
Can I use a soft-sided carrier for cargo travel?
No. Soft-sided carriers are only allowed for in-cabin travel. Cargo and checked baggage require rigid, IATA-compliant containers.
Do I need to buy a specific brand of crate?
IATA doesn't mandate specific brands, but many airlines recommend Vari Kennel, Sky Kennel, or similar IATA-compliant crates. Check with your airline.
Can I use zip ties to secure the door?
Zip ties can be used as SECONDARY security only. The primary locks must be the crate's built-in metal latches or bolts.
What if my pet is between sizes?
Always size up. Your pet must be comfortable and able to move naturally. A crate that's slightly too large is better than one that's too small.
Are wheels allowed on pet crates?
Wheels must be removed or rendered inoperable before travel. Wheels can cause the crate to shift during flight.
Can I put toys in the crate?
Small, safe chew toys are allowed. Avoid toys with squeakers, loose parts, or anything that could be a choking hazard.
Do I need to include food for the journey?
For flights over 4 hours, yes. Attach a bag of food to the outside with feeding instructions. Water containers must be accessible from outside.
What happens if my crate fails inspection?
You'll likely be denied boarding. Some airports have pet shops, but selection is limited. Always verify compliance before arriving at the airport.
How often do IATA regulations change?
IATA publishes updated Live Animal Regulations annually. Major changes are rare, but always check the current year's requirements.
Is PetFlyCheck affiliated with IATA?
No. PetFlyCheck is an independent service. We analyze crates against published IATA standards but are not affiliated with IATA or any airline.