Most advice about flying with a puppy is written for American travellers. It cites US carriers, USDA export paperwork, and fee structures that have nothing to do with a Halifax to Calgary flight. If you are moving a puppy inside Canada, almost none of that applies.

This page covers the domestic Canadian picture: what Air Canada and WestJet each require, the carrier rule that catches the most people, how young is too young, and what actually drives the price. If your puppy is travelling without you, arranged by the breeder, that is a different process and we cover it in shipping a puppy across Canada.

The two ways a puppy flies

A puppy either travels in the cabin with you, under the seat in front of you, or it travels in the hold as checked baggage on your own booking. There is a third path, manifested cargo, but that is normally used when the puppy flies unaccompanied, which is the breeder-shipping scenario rather than the one on this page.

For a puppy, the cabin is almost always the right answer when the puppy fits. A young dog in the hold is separated from you, handled by ground crew, and exposed to the noise and temperature swings of a cargo compartment. The size limit is the deciding factor, and for most breeds the window where a puppy still fits a cabin carrier is short.

Air Canada and WestJet: where the rules actually differ

These two airlines are treated as interchangeable in most travel writing. They are not. The differences below are the ones that change what you buy and which flight you book.

Carrier type

This is the single biggest gap. Air Canada requires that all pets travelling in the cabin be in a soft-sided, flexible carrier, a rule that took effect June 1, 2025. Backpack carriers with hard plastic windows are not permitted. If you own a rigid plastic kennel and assumed it was the safe choice, it will not board an Air Canada cabin.

WestJet frames the requirement differently. The kennel must let the pet stand, sit, turn around, and lie down comfortably, and it must not be a duffle bag, gym bag, or other non-kennel bag. All kennels are subject to approval by WestJet staff at check-in, which means the agent at the counter has the final say regardless of what the box was sold as.

Carrier size

WestJet publishes one in-cabin limit: 41 cm long by 21.5 cm high by 25.4 cm wide (16 by 8.5 by 10 inches). Air Canada does not publish a single number. Its limits change by aircraft and cabin, with variants including 40 by 43 by 20 cm, 40 by 55 by 27 cm, and 21 by 41 by 28 cm. Air Canada also notes that space under the seat varies by aircraft type.

The practical consequence: a carrier that cleared your outbound flight can fail the return if the aircraft is different. Check the limit against your specific flight, not against the airline in general.

Which cabins allow pets

Air Canada does not permit pets in Premium Economy, because the seat layout does not allow safe stowage of a carrier. Pet carriers are also not permitted on Air Canada Jetz flights. WestJet does not accept pets in the Business cabin on the 787 Dreamliner. Booking a premium seat and assuming the puppy comes along is a common and expensive mistake.

How the carrier counts as baggage

Air Canada allows the pet carrier in addition to your regular carry-on allowance on all fares except Economy Basic. On WestJet, the kennel counts toward your carry-on allowance as a personal item. Same trip, same puppy, different amount of luggage you get to bring.

How young is too young

Every Canadian carrier sets a floor, and they do not agree. WestJet, Air North and Canadian North refuse any pet under eight weeks. Air Canada and PAL want roughly ten weeks and fully weaned. Air Transat, Flair and Pascan all require twelve weeks. Book the wrong carrier for a young puppy and the answer at the counter is no, whatever the breeder told you.

That floor exists for good reason beyond airline policy. A puppy separated from its litter too early misses the socialisation window that shapes adult temperament, and several provinces set eight weeks as the minimum legal age to transfer a puppy at all.

If a seller offers to fly you a six-week-old puppy, that is not an eager breeder. It is a signal worth acting on, and we walk through the rest of those signals in how to safely buy a puppy online in Canada.

Cabin or hold: an honest comparison

Canadian airlines that fly pets in cabin, side by side

Air Canada and WestJet dominate the conversation, but seven other Canadian carriers accept dogs in the cabin, and several serve routes the big two do not. Every figure below was read from the carrier's own published policy on July 20, 2026, and is quoted as it appears there.

One easy one to miss. Flair carries pets in cabin on domestic Canadian routes only, with no cabin pet service to the US or internationally, which catches people who book it on price.

One carrier is missing from the table on purpose. Central Mountain Air carries pets, but it publishes no consumer-facing pet policy page. The only figures it puts out sit in a scheduled tariff manual that the airline issues as a draft document, so we are not going to quote fees or crate limits from it as though they were settled. If you are flying CMA, call the airline and get the number from a person. Every other figure on this page comes from the carrier's own published policy, linked in the table.

Three things most guides get wrong

Every carrier above was checked against its own page rather than against other articles. Three errors turn up repeatedly in the guides currently ranking for this topic, and all three can cost you a booking.

1. The weight limit that does not exist

Guide after guide states a combined pet-plus-carrier weight limit for Air Canada, usually 22 lb. Air Canada does not publish an in-cabin weight limit. Neither does WestJet, and neither does Porter. What they publish is carrier dimensions plus the requirement that the animal can stand and turn around. The weight figures in circulation are either invented or lifted from a US carrier. Several Canadian airlines genuinely do set one, and those are in the table above, but for the three largest it is fiction.

2. Snub-nosed breeds are not banned from the cabin

Owners of French Bulldogs, Bostons, Pugs and Boxers are routinely told they cannot fly their dog in Canada. On Air Canada and WestJet the brachycephalic restriction applies to the cargo hold only. The reasoning behind it is sound, since flat-faced breeds are vulnerable to heat and breathing stress in an unsupervised hold, but neither airline extends that restriction to a carrier under your seat. If your snub-nosed dog fits the carrier, the cabin is open to you.

3. Cargo breed bans get copied onto cabin rules

Air Transat publishes a real cabin breed restriction covering Mastiff types, Pit Bull types, Akita, Caucasian Ovcharka, Kangal, Rottweiler, Doberman and wolf-dog hybrids. It separately restricts French Bulldogs and American Bulldogs from cargo, not from the cabin. Those two lists get merged constantly. Read the section that matches how your dog is actually travelling.

What else moves the price

Pet fees are revised often, so confirm the figure on the carrier's own page before you budget. Beyond the fee itself, this is what moves the total:

• The pet fee itself, charged per kennel and typically higher on transborder and international routes than on domestic ones
• The carrier, which is a real cost if your existing kennel does not meet the airline's rule. An Air Canada cabin booking may mean buying a soft-sided carrier outright
• Fare class, because a WestJet kennel eats your personal item allowance and an Air Canada Economy Basic fare changes what else you can bring
• Direct versus connecting, since every connection is another handling event and another chance at a weather hold
• Seat selection, because you need a seat that can legally stow a carrier, which rules out Premium Economy on Air Canada

Book the pet spot when you book the flight. Airlines cap the number of animals per cabin and per flight, and those spots fill well ahead of the seats.

Paperwork for a domestic Canadian flight

Flying inside Canada is far simpler than crossing a border. The Canadian Food Inspection Agency sets import requirements for dogs entering Canada, including proof of rabies vaccination for dogs over three months of age. Those rules govern entry into the country, not travel between provinces.

For a domestic flight, the airline is your rulebook. Carry your puppy's vaccination records anyway. A young puppy may be mid-series rather than fully vaccinated, and knowing where you are in that schedule matters for both travel timing and the first weeks at home.

Before you book

• Confirm the puppy is at least eight weeks old on the travel date, not on the booking date
• Measure the puppy standing and lying down, then check that against the limit for your specific aircraft
• Buy the carrier type your airline requires, soft-sided for Air Canada's cabin, and let the puppy sleep in it for a week or two first
• Call and reserve the pet spot rather than assuming it is available
• Avoid a growth-spurt gamble; a carrier that fits at nine weeks may not fit at fourteen
• Pick the earliest direct flight you can, which shortens handling time and dodges afternoon heat embargoes

If you are still choosing a crate for home as well as travel, our puppy crate guide covers sizing that will not need replacing in three months.

Frequently asked questions

Can my puppy sit on my lap during the flight?

No. On both airlines the pet must remain in its closed carrier, stowed under the seat in front of you, for the entire flight. WestJet warns that removing your pet from its kennel on board can result in a ban from travelling with pets on future WestJet flights.

What if my puppy is too big for a cabin carrier?

Your options are the hold as checked baggage, subject to size and weather limits, or ground transport. WestJet accepts a pet plus kennel combined up to 45 kg as checked baggage. For a large-breed puppy that has outgrown the cabin, driving is often less stressful than a cargo hold.

Should I sedate my puppy before flying?

Not without veterinary direction. Sedation affects breathing and temperature regulation at altitude, and many airlines will refuse a visibly sedated animal. Ask your vet well before the travel date rather than the night before.

Do I need a health certificate to fly within Canada?

Generally no for a domestic flight, though individual airlines can ask for documentation and rules change. Confirm with your airline when you reserve the pet spot. CFIA requirements such as rabies certification apply to dogs entering Canada, not to travel between provinces.

Can I fly with two puppies in one carrier?

Policies limit both the number of pets per carrier and the number per guest, and the animals must still be able to stand, turn around, and lie down. Confirm the specific limit with the airline before booking, since it varies by carrier and route.