How to Choose the Right Pet Shipping Crate: IATA Rules and Practical Advice

The travel crate is not just a box – it is your pet’s home for the duration of the journey. Get it right and the journey is manageable. Get it wrong and the airline may refuse your pet at check-in, or worse, your pet may be uncomfortable and distressed throughout.

IATA: The Standard Everyone Uses

IATA’s Live Animals Regulations are the global standard for pet air transport. Most airlines require IATA compliance regardless of whether they specify it explicitly – if the crate fails an inspection, your pet stays behind.

Key IATA requirements for dog and cat containers (IATA Container Requirements 1 through 8, depending on size):

• Rigid construction – plastic, fibreglass, or metal. No fabric-only options for hold travel.
• Secure door – metal pins or bolts, not just a plastic clip. The door must not open accidentally during handling.
• Ventilation – minimum ventilation on three sides (some IATA containers require all four sides to have ventilation).
• No wheels – wheels must be removed or immobilised before check-in. Many airlines require this.
• No castors – fixed-base crates only.
• Absorbent bedding – a non-slip mat or bedding that absorbs liquid is expected.
• Live Animal labels – directional arrows and Live Animal stickers should be attached (the airline usually provides these at check-in, but have your own in case).
• Water and food attachment points – bowls that can be accessed from outside the crate. Required for journeys over a certain length.

Sizing: The Most Important Decision

A crate that is too small causes physical discomfort and stress. A crate that is too large can allow the animal to be thrown around during turbulence. The IATA sizing formula:

• Length: Nose-to-tail length plus half the height to elbow
• Width: Width of body x 2
• Height: Floor to top of head (or ear tip) when standing + small clearance

Measure your dog or cat when they are relaxed and standing. Measure twice. If in doubt, go one size up rather than one size down.

Where to Buy

IATA-compliant crates are sold by major pet travel equipment companies (Petmate Sky Kennel, Ferplast Atlas, similar). Check the specific model against IATA CR requirements for the size you need. Many online retailers label crates as “airline approved” without specifying IATA compliance – ask the seller directly or check the IATA LAR for specific model listings.

Avoid second-hand crates with cracks, missing bolts, or damaged latches. A broken crate discovered at check-in cannot be taped up and accepted.

Preparing the Crate Before Travel

• Crate train weeks or months in advance – the crate should be a familiar, comfortable space before travel day
• Place familiar bedding inside – your scent on a worn T-shirt is comforting for dogs especially
• Do not wash bedding immediately before travel – familiar smell matters more than cleanliness
• Tape the water bowl attachment – if the bowl fits loosely, tape it in place so it does not rattle and upset the animal
• Write your contact details on the crate in permanent marker – name, phone number, email, destination address

Checking In with a Crate

Arrive at the airport early. Live animal check-in takes longer than standard luggage. Have your health certificate, import permit (if required), and vaccination records accessible. Most airlines will weigh the crate with the animal inside and charge accordingly.

Crate requirements can vary by airline and route. Always confirm with the airline at the time of booking. This guide reflects IATA LAR standards current as of May 2026.