Flying isn’t always the best option for every pet. Here we share when not to fly with your dog or cat and tips on avoiding common dog cargo flight risks, so your journey can be safe and stress-free for both of you.
When flying with a dog becomes a risk
Flying with a dog can be safe and adventurous, but there are times when it’s better to pause and think twice. Factors like age, health, breed, or stress levels can turn an otherwise simple flight into a risky experience.
Even a healthy dog can struggle in certain situations — long flights, extreme temperatures, or multiple layovers increase stress and make travel more challenging. That’s why we put together these tips for recognizing when not to fly with your cat, dog or any other animal.
A guide to safe pet travel
Explore the sections below to find information .
- The difference between cabin/hold/cargo ›
- When flying with dogs in cargo is not safe ›
- Sedatives during flights ›
- What airlines do not recommend ›
- Alternatives ›
- How the PetAbroad team look at it ›
- FAQ ›
The difference between flying in cabin, in hold and in cargo
When planning a flight with a dog, one of the first things we always clear up is how the pet will actually travel. Cabin, hold and cargo sound similar, but in reality, they are very different experiences — both for the dog/cat and for you as the owner.
Flying in the cabin is the simplest option and, whenever possible, the one we personally prefer. Your dog or cat stays with you under the seat in a soft carrier from takeoff to landing. You see them, you hear them, and you immediately notice if something isn’t right.
It is the best way of flying for both of you, unfortunately it’s not always possible due to the weigh limit (usually 8 kg including carrier). Here you can check the list od European airlines that allow pets in cabin.
Flying in the aircraft hold as checked baggage is already a different story. Even though your pet travels on the same plane as you, it is in a pressurised and temperature-controlled area, but without you. You hand them over at check-in and see them again after landing.
Many dogs handle this just fine, especially on short, direct flights, but it does require a higher level of trust in the airline’s procedures and ground handling.
Cargo travel goes one step further. This is where most of the questions — and worries — usually start. When a dog or cat flies as cargo, the process is no longer directly connected to your own ticket or flight. Check-in often happens earlier, sometimes at a separate terminal, and the handling is done by cargo staff.
When flying with dogs in cargo is not safe
Although airlines try to do their best to make sure the cargo travel is safe, there are certain situations where it’s simply not the right choice. Here are six examples when it should be avoided.
1. Very young puppies and cargo travel
Puppies under a certain age (often under 8–12 weeks, depending on airline rules) are usually not allowed to fly in cargo at all. The reason is that their immune systems are still developing, so even short periods in a separate compartment can be risky.
2- Senior dogs and dogs with health conditions
Senior dogs or those with chronic health issues face higher risks. So if your pet has e.g. arthritis, heart problems, respiratory issues, or any other condition, cargo travel should be generally avoided. In these type of cases it is necessary to consult your vet.
3. Sick pet
Not just for dogs flying in cargo, but for any type of air travel, it’s not a good idea to travel with a sick pet. Symptoms like fever, diarrhea, or nausea are often difficult to manage even at home — you can imagine how challenging they become during a flight.
Most importantly, a pet in this condition is simply not fit to fly, and air travel can worsen both physical discomfort and stress.
4. Brachycephalic breeds flying risks in cargo
Short-nosed breeds such as pugs, bulldogs, or Persian cats are very sensitive to heat and breathing difficulties. Meaning that even with temperature-controlled areas, these breeds can experience complications.
Many airlines have banned brachycephalic breeds completely or let them travel only in the cabin.
5. Extreme temperatures and seasonal cargo embargoes
During extreme weather conditions such as very cold winter or super hot summer airlines may restrict cargo travel — there are known as “seasonal cargo embargoes”. But even when no embargo is in place, extreme weather can still bring some risks.
That’s why we recommend to always check the airline’s temperature guidelines and avoid flying in cargo when conditions are that harsh.
6. Long-haul flights and multiple layovers
The longer the flight and the more connections, the more handling your pet experiences. Each step increases stress and the chance of mistakes e.g. during un/loading.
So of course if possible always choose direct flight.
Sedatives and why they increase the risk
Giving your dog or cat a sedative before a flight may seem as a good idea, but it can be dangerous. Sedatives slow breathing and make it harder for pets to regulate their body temperature — risks that are even higher in the cargo hold.
Veterinarians and airlines usually advise against sedatives. Instead, focus on getting your pet comfortable in their carrier and keeping them calm naturally.
When airlines themselves recommend not flying
Sometimes, it’s not just common sense — the airline will tell you your pet shouldn’t fly. That usually happens in extreme weather, for very young or sick animals, or for certain breeds that are prone to breathing problems as we’ve talked about short-nosed breeds.
Airlines issue these recommendations for a reason: they know the risks and want to prevent serious problems. Always pay attention to their guidance — ignoring it can put your pet in danger.
Alternatives to flying with a pet
Sometimes, the safest choice is simply not to fly at all. For shorter trips you can drive , take a pet-friendly train or go on a boat (e.g. Brittany Ferries). For longer journeys, there are many professional pet transport services that can move your pet.
And if you can’t take your pet, ask you friends or professional pet sitters.
How we decide at Pet Abroad whether to fly or not
At Pet Abroad, we always put the pet’s safety and comfort first. Before any flight, we take our pets to a vet to make sure everything is allright even when our airlines does not require “fit-to-fly document”.
We also check airlines policies and the weather. Even a short flight can be risky if the temperature is extreme or if the airline has strict restrictions.
Final thoughts on when flying with dogs in cargo is fine or not
Flying with a pet can be safe and even enjoyable — but it’s important to realize that it’s not for every pet. Age, health, breed, and stress levels all matter and should be put as a priority when deciding if and when to travel.
With the right preparation — or by choosing a safe alternative — you can keep your pet happy and healthy.
FAQ about when not to fly with your dog and other animals
How safe is it for pets to fly?
Flying can be safe for pets, especially in the cabin where you can monitor them. Risks increase in cargo, particularly for puppies, seniors, brachycephalic breeds, or pets with health issues. Planning, vet advice, and choosing direct flights can make a big difference.
Is it traumatic for dogs to fly in cargo?
Some dogs handle it well, especially on short, direct flights. Others may experience stress from separation, noise, and handling. Knowing your pet’s temperament and using trusted airlines can help reduce trauma.
Is it stressful for pets to fly?
Flying can be stressful for many pets, especially if they travel in cargo. Stress depends on personality, experience, and the flight environment. Familiar carriers, calming routines, and gentle reassurance help pets cope.
What happens to pets on long flights?
On long flights, pets spend more time in the hold or cabin, which increases stress and fatigue. They may need more water, rest, and monitoring. For very long trips, consider professional pet transport or breaking the journey into shorter legs if possible.
Can puppies or kittens fly in cargo?
Very young pets usually aren’t allowed to fly in cargo. Their immune systems are still developing, and they can easily get stressed or sick. Waiting until they are older is safest.
Can I give my pet a sedative for the flight?
Most vets and airlines advise against sedatives. They slow breathing and affect temperature regulation, which can be dangerous in cargo. Focus on comfort and familiar carriers instead.
Which dog breeds should never fly in cargo?
Short-nosed (brachycephalic) breeds like pugs, bulldogs, or Persian cats are at higher risk of breathing problems. Many airlines only allow them in the cabin or prohibit cargo travel altogether.
What should I check before booking a flight with my pet?
Check airline rules, temperature restrictions, flight duration, and whether it’s direct or has layovers. Also consider your pet’s age, health, and stress levels.
Are direct flights safer for pets than connecting flights?
Yes. Fewer transfers mean less handling, less time in cargo, and lower stress for your pet. Direct flights are generally recommended whenever possible.