Pet carrier: what to check before the flight

Dimensions: space to turn around, stand, and lie down

The animal must be able to turn around completely, stand up straight, and lie down without touching the carrier walls: this is the basic criterion required for the transport of live animals, but the maximum dimensions allowed in the cabin vary from airline to airline and must always be checked specifically before purchase.

Ventilation: the requirement of three sides

The IATA Live Animals Regulations require ventilation openings on at least three sides of the carrier, for a total ventilated surface of at least 16% of the total surface area: a safety requirement applied strictly for hold transport and required in equivalent form even for models used in the cabin.

Material: rigid for hold, soft accepted in cabin

For the hold, a rigid plastic or fiberglass carrier is generally required, with door and metal closures; in the cabin, however, many airlines also accept soft models, as long as they meet the maximum dimensions provided for the space under the seat in front. For specific regulations on hold transport, see also our guide on animals in the hold.

Wheels and safety lock

When present, wheels should generally be removed or locked with adhesive tape for hold transport—a safety precaution related to the mechanized handling of baggage. It's worth testing the safety lock system multiple times before departure: a lock that opens accidentally during transport is one of the most serious risks to avoid.

The most useful advice is to verify the exact specifications (dimensions, ventilation, material) directly on the website of your chosen airline, because the accepted thresholds change from one carrier to another even with the same general IATA regulations.