Summer Pet Cargo Embargoes: What Canadians Must Know

Why Canadian Pet Owners Face a Double Challenge

Canada's geography creates a unique situation for pet cargo travel. While the global concern centres on summer heat, Canadian pet owners must also contend with extreme winter cold that can ground pet shipments for months. During summer, temperatures in southern Ontario, the Prairies, and interior British Columbia regularly exceed 30 °C, triggering the same heat embargoes that affect carriers worldwide. The result is a narrower window of safe cargo travel compared to more temperate regions.

The real danger during summer is not the aircraft cargo hold, which is climate-controlled in flight. The risk lies in ground handling: the time pets spend on the tarmac, in loading vehicles, and in warehouse areas. At airports like Toronto Pearson (YYZ), Calgary (YYC), and Vancouver (YVR), summer ground temperatures can climb well above the thresholds set by carriers, especially during afternoon hours.

Air Canada Cargo: Temperature Thresholds and Seasonal Policy

Air Canada operates the AC Animals program for live animal cargo transport. The airline will not accept pets for cargo shipment when the actual or forecasted ground temperature at any airport on the itinerary exceeds 29.5 °C. The lower threshold is -12 °C, below which cargo transport is also refused.

For standard checked baggage pet travel, Air Canada applies a similar framework: pets are not accepted when temperatures exceed approximately 29 °C or fall below 7 °C at any point on the route. With an acclimation certificate from a veterinarian, transport may be permitted at temperatures as low as -6.5 °C, but no pet will be transported below -12 °C under any circumstances.

Brachycephalic breeds face additional restrictions. Air Canada, like most carriers, applies a lower heat threshold (typically around 24 °C) for snub-nosed dogs and cats, and many are banned from cargo entirely. Pet owners should confirm breed eligibility directly with the airline before booking.

WestJet Cargo: The Pet'Air Embargo Window

WestJet Cargo operates the Pet'Air service for live animal transport. Between May 15 and October 31, all live animal shipments, including Pet'Air bookings, are embargoed to and from specific cargo stations subject to elevated seasonal temperatures. This window is notably longer than the May 1 to September 30 embargo common among U.S. carriers.

WestJet also enforces a winter embargo from December 1 through March 31 for hairless breeds of dogs and cats, which lack the natural insulation of fur and are highly vulnerable to cold injury during transport. This is a detail unique to Canadian operations, where winter temperatures routinely plunge below -20 °C in many regions.

For the most current list of embargoed stations and breed restrictions, contact WestJet Cargo directly, as station lists are updated seasonally.

Breed Restrictions: Brachycephalic and High-Risk Animals

Snub-nosed (brachycephalic) breeds face the most severe restrictions across all Canadian carriers. Many airlines ban these breeds from cargo travel year-round. These breeds have shortened airways that make breathing difficult, especially in warm, low-oxygen, or stressful conditions. The Canadian Veterinary Medical Association (CVMA) emphasizes that animal health and welfare must be prioritized over all other logistical concerns during transport.

Commonly Restricted Dog Breeds

• Bulldog (English and French)
• Pug
• Boston Terrier
• Boxer
• Shih Tzu
• Pekingese
• American Bully
• Cavalier King Charles Spaniel (on some carriers)

Commonly Restricted Cat Breeds

• Persian
• Himalayan
• Exotic Shorthair
• Burmese

Owners of these breeds should plan for cabin travel (if the pet meets size and weight requirements, typically under 10 kg including carrier) or ground transport as the default, regardless of season.

CFIA Requirements for International Pet Travel

Pet owners flying animals out of Canada must obtain a health certificate endorsed by the Canadian Food Inspection Agency (CFIA). This is mandatory: the CFIA cannot endorse a certificate after the animal has left the country. Requirements vary by destination, so owners should obtain the import requirements from the destination country's veterinary authorities well in advance.

Key steps include:

• Schedule a veterinary examination and obtain the required health certificate (most airlines require this within 10 days of travel).
• Book an appointment with a CFIA office to have the certificate endorsed before departure.
• Confirm whether the destination country requires additional testing, vaccinations, or an import permit.
• Ensure your pet's rabies vaccination is current and documented, as this is required by most international destinations.

For domestic flights within Canada, a CFIA-endorsed certificate is not required, but airlines still require a veterinary health certificate issued within 7 to 10 days of travel.

Routes Most Affected by Summer Embargoes in Canada

While Canada's climate is generally cooler than the southern United States, several Canadian airports and cross-border routes are regularly affected by summer heat embargoes:

• Toronto Pearson (YYZ): Southern Ontario summer temperatures frequently exceed 30 °C, particularly in July and August, triggering cargo restrictions.
• Winnipeg (YWG) and Regina (YQR): Prairie cities experience intense summer heat, often surpassing 33 °C during peak weeks.
• Kelowna (YLW) and Kamloops (YKA): Interior B.C. is one of Canada's hottest summer regions, with temperatures regularly exceeding 35 °C.
• Cross-border connections through U.S. hubs: Any itinerary routing through Dallas/Fort Worth (DFW), Houston (IAH), Miami (MIA), or Phoenix (PHX) carries a high risk of day-of cancellation from June through August.

Even routes through Montreal (YUL) and Ottawa (YOW) can be affected during heat waves, when humidex values climb past 40 °C.

CVMA Guidelines on Pet Air Travel

The Canadian Veterinary Medical Association (CVMA) provides clear guidance for pet owners considering air travel. Key recommendations include:

• Have your pet's fitness for travel assessed by a veterinarian before any prolonged or potentially stressful journey.
• Travel during off-peak hours and book non-stop flights whenever possible.
• Ensure pets are last on and first off the aircraft.
• Offer a small meal the morning of departure to reduce the risk of vomiting; withhold food during the flight itself.
• Ensure fresh water is available after the flight, especially on longer routes.
• Notify flight attendants that a pet is on board in case of delays.
• Discuss anti-anxiety or motion sickness medication options with your veterinarian before travel.

Ground Transport Alternatives in Canada

When cargo is not available, ground transport is the primary alternative. Professional pet transport companies operate climate-controlled vehicles and offer door-to-door service across Canada.

What to Look For in a Canadian Ground Transporter

• Provincial licensing: Animal transport regulations vary by province. Confirm the transporter complies with provincial animal welfare legislation in both the origin and destination provinces.
• IPATA membership: The International Pet and Animal Transportation Association sets professional standards and a code of ethics for members.
• Vehicle specifications: Ask about climate control capability (both heating and cooling, given Canada's temperature extremes), crate setups, rest stop schedules, and GPS tracking.
• Insurance and liability: Confirm coverage in the event your pet is injured or becomes ill in transit.
• Cost expectations: Ground transport within Canada typically ranges from $500 to $3,000 CAD depending on distance and service level. Cross-country trips (e.g., Vancouver to Toronto, approximately 4,400 km) are at the higher end.

If you are considering boarding your pet instead of transporting them, see our guide on How to Choose a Dog Boarding Facility in Canada.

Planning Timeline for Canadian Pet Owners

10 to 12 Weeks Before Travel

• Confirm your airline still offers pet cargo service and review current breed and temperature policies.
• Book the earliest morning flight to minimize heat exposure.
• Obtain an IATA-compliant crate that meets your airline's specific size requirements.
• If travelling internationally, begin the CFIA health certificate process now.

4 to 6 Weeks Before Travel

• If your route passes through an embargoed station or a U.S. hub, rebook through an alternative connection point.
• Research ground transport companies as a backup.
• Confirm your pet's microchip is registered and contact details are current.
• Review your Pet Insurance Waiting Periods in Canada Explained to understand travel coverage.

1 to 2 Weeks Before Travel

• Schedule your veterinary visit for the health certificate (must be within 10 days of travel for most airlines).
• Acclimate your pet to the travel crate with short, positive sessions daily.
• Prepare a travel kit: water dish, absorbent bedding, a frozen water bottle, copies of health documents, and emergency contacts.

24 to 48 Hours Before Travel

• Check the weather forecast for every airport on the itinerary.
• If temperatures are forecast above 29.5 °C at any point, call the airline immediately.
• Have a ground transport backup or delayed departure plan ready.

Signs of Heat Stress in Pets

Every pet owner involved in summer travel should recognize the warning signs of heat-related illness:

• Rapid, heavy panting or difficulty breathing.
• Excessive drooling or thick saliva.
• Bright red tongue and gums (progressing to pale or blue in severe cases).
• Vomiting or diarrhea.
• Stumbling, disorientation, or collapse.
• Elevated body temperature above 40 °C.

If heat stress is suspected, move the animal to a cool area immediately, offer small amounts of cool (not ice-cold) water, apply cool wet towels to the neck and groin, and seek emergency veterinary care without delay.

For a deeper understanding of emergency timelines in critical pet situations, see our article on bloat in dogs and the emergency timeline.

Emergency Pet Travel Kit

Whether travelling by air or ground, every pet should travel with the following items:

• Health certificate and vaccination records (originals and copies, plus CFIA endorsement if travelling internationally).
• Microchip documentation with current registration confirmation.
• Collapsible water bowl and bottled water.
• Frozen water bottle or ice pack wrapped in a cloth for cooling.
• Absorbent crate liner or pads.
• Photo of your pet on your phone and printed, in case of separation.
• Veterinarian emergency contact number and nearest emergency animal hospital at your destination.
• Leash and collar with ID tag (separate from the crate).
• Familiar blanket or toy to reduce stress.
• Any prescribed medications with dosing instructions written clearly.

For more on preparing your pet for seasonal care before travel, see our article on spring nail trimming and paw pad care for dogs, which covers paw protection relevant to hot tarmac exposure.