Published in 2025 / Updated in 2026
Brachycephalics are cats and dogs with a special flat skull structure that have genetically determined breathing problems.
Due to health problems, many airlines refuse to transport such pets.
We recommend that you check with the airline in advance whether they will take your cat or dog on board. Even if the company is ready to take a brachycephalic cat on a flight, they may require a letter of consent from you that you take full responsibility for the life and health of the pet.
If you own one of these breeds, the worry is sharper and it should be, because the stakes are physically higher. That’s not a reason to panic; it’s a reason to plan early and choose the lowest-risk option even if it costs more or takes longer.
How to prepare a brachycephalic cat for a flight
Be sure to consult with your veterinarian about the upcoming trip and do the necessary examinations.
Never give a brachycephalic cat sedatives without a veterinarian’s prescription and without checking the health of the heart. Brachycephalics are the most common victims of sedative overdoses during flights.
Carrier for a Brachycephalic Pet
Since brachycephalic breeds often have breathing, heart, and joint problems, it is important to choose a carrier that is as spacious as possible for your pet.
If your pet is allowed to fly in the cabin, but will be cramped, it is better to check it into the baggage compartment in a spacious carrier.
How to choose the right carrier for your brachycephalic pet according to IATA rules
The carrier should be 10% larger than your pet on each side.
A = Length of the animal from the tip of the nose to the base of the tail.
B = Height of the animal from the floor to the elbow joint.
C = Width at the shoulders, or at the widest point (whichever is greater).
D = Height of the animal in a natural standing position from the floor to the top of the head or to the tip of the ear (whichever is higher).
E = D + thickness of the bedding.
Then substitute the measurements you made into the formula below:
Container length = A + ½ B + 10%
Container width = C × 2 + 10%
Container height = D + bedding thickness + 10%
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Which breeds count as brachycephalic?
Among dogs: Bulldogs, Pugs, Boxers, Boston Terriers, Pekingese and others; among cats: Persians and Himalayans.
Can my Pug fly in cargo?
Many airlines say no for snub-nosed breeds. Check your airline directly and prefer the cabin if your dog fits.
Is it ever safe to fly a brachycephalic pet?
Yes, with the right option (usually cabin or a specialist service), cool conditions and careful planning, but the choice deserves more caution than with other breeds.
Breed restrictions vary by airline, season and route. Confirm before booking.