For most pet owners, the first long international flight is the most anxiety-inducing part of a move. The questions are predictable: Is the cargo hold safe? Will my dog be scared? What happens at a layover? Here is a clear picture of what actually happens during a long haul pet flight and how to prepare your dog well for it.
The cargo hold on commercial aircraft is pressurized and temperature-controlled, operating at the same pressure and within the same temperature range as the passenger cabin. This is not a dark, freezing storage bay. It is an environment designed to safely transport live animals and temperature-sensitive freight.
On pet-friendly airlines with dedicated live animal programs, pets are loaded last and offloaded first. This minimizes time on the tarmac, which is where temperature exposure actually becomes a risk. Airlines with established animal handling protocols use climate-controlled ground transport vehicles for transfers between the aircraft and the cargo facility.
Pets travel individually in their own crates and are secured separately. They may be able to sense other animals nearby, but direct contact between animals does not occur during the flight.
Lighting in the hold is typically low. Most dogs settle and rest during the flight. The vibration and white noise of the aircraft are actually calming for many dogs once they are comfortable in their crate.
Sedation during air travel is not recommended by IATA, the AVMA, or most experienced pet transport professionals, and many airlines prohibit it outright. The reason is straightforward: sedatives suppress respiratory and cardiovascular function, and those effects intensify at altitude. A sedated animal also cannot brace itself if the crate shifts during turbulence, which increases injury risk. If your dog has significant anxiety, speak with your vet well before travel about non-sedating calming options. There are approaches worth exploring, but heavy sedation before a flight is not one of them.
Feed your dog a light meal several hours before departure and avoid feeding them right before the flight to reduce the chance of nausea or vomiting in the crate. Water is important, especially on long flights. A spill-resistant water bowl or frozen water that melts slowly during the flight helps ensure your dog stays hydrated without the risk of the bowl emptying early in transit.
Dogs will not have access to a bathroom during the flight itself. Most healthy adult dogs can manage a long flight without an accident, particularly if they are exercised and given a bathroom opportunity shortly before check-in. Absorbent bedding in the crate is a sensible precaution for very long journeys.
A dog that is comfortable in its crate handles long flights dramatically better than one that is not. The crate should feel like a familiar, safe space before travel day. Start weeks in advance. Let your dog explore the crate on their own terms. Feed meals inside it. Build up to longer periods of time with the door closed. The goal is for the crate to be associated with rest and calm rather than stress and confinement.
The crate itself must meet IATA Live Animal Regulations: rigid construction, ventilation on at least three sides, large enough for your dog to stand, turn around, and lie down without touching the walls. A crate that fits these requirements and that your dog has spent real time in is one of the best investments you can make for the journey. See our crate preparation guide and crate training guide for specifics.
For a route like Copenhagen to Boston, a layover is common. A well-planned layover is actually a benefit for your dog on a long journey. It is an opportunity to get out of the crate, have water, go to the bathroom, and rest before the next leg.
At airports with dedicated animal facilities, such as the Frankfurt Animal Lounge operated by Lufthansa Cargo, dogs are taken out of their crates, walked, given water, and cared for by trained staff. The export, import, and transit areas at these facilities are physically separated, so your dog does not come into contact with animals from other destinations. A veterinarian is on call throughout.
Not every layover airport has a dedicated animal facility, which is one reason routing decisions matter. A layover at an airport with strong live animal infrastructure is a better outcome for your dog than a shorter connection at an airport without it. When PetRelocation plans a route, the quality of layover handling is part of the calculus, not an afterthought.
The honest answer is that most dogs handle long flights better than their owners expect. Dogs are adaptive, and a dog that is crate-trained, healthy, and well-prepared tends to settle and rest for much of the journey. The dogs that struggle are almost always dogs that have never been crate-trained, dogs with undiagnosed health conditions, or brachycephalic breeds with pre-existing respiratory limitations.
If your dog is a flat-nosed breed, such as a Bulldog, Pug, French Bulldog, or Boston Terrier, the risk profile for cargo travel is genuinely higher. Many airlines restrict or ban brachycephalic breeds from cargo travel entirely. This is worth checking early in your planning process.
For a healthy, crate-trained dog like a Eurasier, a long international flight is a manageable journey with the right preparation and routing.
If you want to talk through the specifics of your dog's route, including layover options and airline selection, our team can walk you through it.