Breed, heat and airline restrictions: when your dog can (and can't) fly

Not every dog can fly in the hold of a commercial aircraft. Brachycephalic ("snub-nosed") breeds face significant physiological risks at altitude and under the stress of air travel. Many major carriers have banned them from the hold entirely. Seasonal heat embargoes can ground any dog — of any breed — during summer months. And some breeds are subject to outright bans under dangerous-dog legislation at the destination country, regardless of how the owner feels about it.

Understanding these restrictions before you book is not just about avoiding inconvenience — it is about keeping your dog alive. Dogs have died in aircraft holds, and the majority of documented in-flight animal deaths involve brachycephalic breeds. This article covers the three main restriction categories, explains the physiology behind them, and gives you a framework for checking whether your specific dog can fly on your specific route.

Brachycephalic breed restrictions: the physiology

Brachycephalic obstructive airway syndrome (BOAS) affects dogs bred for shortened muzzles. The skull is compressed, but the soft tissues — the nasal passages, soft palate, and trachea — are not proportionally reduced, creating structural airway obstruction. In everyday life, many affected dogs manage reasonably well. Under the compounding stresses of air travel — confinement, heat, reduced oxygen partial pressure at altitude, and elevated cortisol — the same dogs can move rapidly into respiratory distress.

The United States Department of Transportation (USDOT) has published data on in-flight animal incidents, and brachycephalic breeds have consistently accounted for a disproportionate share of in-flight deaths. British Bulldogs and French Bulldogs have featured most prominently. As a result, many major airlines have progressively tightened or eliminated their brachycephalic hold-travel policies.

Which breeds are typically restricted

There is no single universal list — each airline maintains its own breed policy. However, the following breeds appear on most major carriers' restricted or banned lists for hold travel, and many are also subject to in-cabin restrictions:

• Bulldog breeds: English Bulldog, French Bulldog, American Bulldog
• Pug and Pug-cross breeds
• Boston Terrier
• Boxer
• Shih Tzu
• Lhasa Apso
• Pekingese
• Japanese Chin
• Brussels Griffon
• Cavalier King Charles Spaniel (some carriers)
• Bull Mastiff and other Mastiff breeds with compressed faces

Heat and seasonal embargoes

Aircraft holds are temperature-controlled during flight, but on the ground — during loading, on the tarmac before departure, and during transit stops — temperatures can rise dangerously. Airlines manage this risk with temperature embargoes: they will refuse to accept live animals in the hold if the forecast temperature at any point on the journey exceeds a defined threshold.

Most major carriers apply a maximum temperature of approximately 29°C (85°F) at any airport on the route. For brachycephalic breeds, the threshold is typically lower — often around 24–27°C (75–80°F). Embargoes apply to both origin and destination airports, and to any hub or transit point on the routing. During summer in North America and Europe, and year-round in tropical cities like Singapore, this can make hold travel impossible on some routes.

For Singapore-based owners, this is a critical consideration. Singapore's year-round average temperature regularly exceeds 30°C, and Changi Airport sits in a tropical environment. Departures in the hottest parts of the day are most at risk. Some Singapore-originating routes may be subject to embargo restrictions during the day and permitted on overnight departures — but this depends entirely on the airline's policy and the specific routing. Confirm with the carrier for each specific flight.

How major carriers compare (as of June 2026)

Airline policies change frequently — always confirm directly. The following is a general characterisation of major carrier approaches as of mid-2026 and should not be used as a substitute for current airline confirmation:

• Singapore Airlines (SQ): accepts dogs as checked excess baggage on most routes; combined weight limit (dog + crate) of 32 kg in economy/business; most brachycephalic breeds accepted in-cabin only if under the weight limit; snub-nosed breeds excluded from hold; heat embargoes apply — confirm at singaporeair.com
• Qantas (QF): dogs accepted as checked baggage on Australian domestic routes and select international routes; brachycephalic breeds excluded from hold on most routes; seasonal embargoes apply from October to March on some routes — confirm at qantas.com
• Emirates (EK): dogs accepted as manifest cargo through Emirates SkyCargo on most routes; brachycephalic breeds subject to enhanced documentation; some routes exclude live animals entirely — confirm at skycargo.com
• Cathay Pacific (CX): dogs accepted as checked baggage or cargo depending on route and size; brachycephalic breeds not permitted in the hold; temperature policies apply across the route network — confirm at cathaypacific.com
• Note: policies above are general characterisations only — routes, aircraft types, seasonal rules and breed lists all vary; every carrier must be contacted directly for your specific booking

Aggressive and restricted breed bans at the destination

Several countries and Australian states impose breed-specific legislation (BSL) that prohibits the import of certain breeds entirely. Singapore's Animal & Veterinary Service (AVS) maintains a list of breeds that cannot be imported regardless of origin — this list includes Pit Bull types (American Pit Bull Terrier, American Staffordshire Terrier, Staffordshire Bull Terrier, and crosses), Akita, Tosa, Dogo Argentino, Fila Brasileiro, Boerboel, Perro de Presa Canario, and Neapolitan Mastiff. Australia's Department of Agriculture, Fisheries and Forestry (DAFF) prohibits importation of several breeds classed as dangerous under Australian law, with state-level variations. The UK has a list of prohibited breeds under the Dangerous Dogs Act. These bans are not negotiable — a dog of a prohibited breed will be refused entry.

If you have a mixed-breed dog with phenotypic characteristics of a restricted breed, be aware that some countries make breed determinations based on physical appearance rather than DNA testing alone. This has led to dogs being seized at the border. If your dog's appearance could be interpreted as resembling a restricted breed, seek advice from an IPATA-member relocation specialist and the destination authority well in advance.

Service dogs and emotional support animals: different rules apply

In the United States, the Air Carrier Access Act (ACAA) historically required airlines to accept emotional support animals (ESAs) in the cabin. The US Department of Transportation revised this rule in December 2020: airlines are no longer required to accommodate ESAs and may treat them as pets. As of 2026, most major US carriers no longer accept ESAs as cabin animals. Trained psychiatric service dogs retain protections under the ACAA, but require advance documentation (typically 48 hours before departure).

For international travel, service-dog policies vary by country and carrier. Singapore AVS applies standard import requirements to service dogs, though AVS administers a separate recognition process for guide dogs. Australia's DAFF has specific provisions for assistance dogs, but full import biosecurity requirements still apply. Do not assume a service animal exemption applies internationally without confirming with the airline and the destination authority.

What to do if your breed is restricted

• Check every airline that operates on your route — policies differ significantly between carriers
• Consider whether a longer routing via a cooler hub city reduces heat-embargo risk
• If your dog is brachycephalic and no carrier will accept them in the hold, a pet relocation agent may identify cargo-specialist operators with enhanced climate-control facilities
• If relocating permanently, a longer sea/air combination via a specialist shipper may be an option for affected breeds
• Consult your veterinarian about whether air travel is appropriate for your dog's specific health status — for dogs with significant BOAS, pre-surgical airway correction may improve travel suitability (discuss with a veterinary surgeon)
• Never misrepresent your dog's breed to circumvent restrictions — if discovered at the airport, your dog will be refused travel