Can Dogs Fly on Airplanes? Cabin, Cargo, and Service Dog Rules Explained

Yes, dogs can fly on airplanes. Most airlines allow dogs to travel three ways: as a small pet in the cabin under the seat, as a larger pet checked into the temperature-controlled cargo hold, or as a trained service dog that rides free in the cabin under U.S. federal disability law. Which option applies depends on the dog's size and breed, the airline's policy, and whether the trip is domestic or international. This guide covers the rules from the International Air Transport Association (IATA), the U.S. Department of Transportation (DOT), and national import agencies, and explains how they differ from the European Union (EU) pet passport and from Animal Passport's biometric livestock identity product.

Can Dogs Fly on Airplanes? The Short Answer

Dogs fly on commercial airplanes every day, most often in one of three categories: in-cabin pet, cargo-hold pet, or service animal. The International Air Transport Association (IATA) sets a worldwide baseline through its Live Animals Regulations (LAR), with a new edition that took effect January 1, 2026, but individual airlines layer on their own breed, size, and documentation rules on top of that baseline. As of August 2026, the biggest recent changes affecting U.S. dog travel are the DOT's 2021 restriction of free cabin travel to trained service dogs, and the Centers for Disease Control and Prevention's (CDC) updated dog-import requirements, which took effect August 1, 2024, after a transition period that ran through July 31, 2025.

Three Ways Dogs Fly: Cabin, Cargo, and Service Animal

Airlines and regulators treat these three categories very differently. The table below summarizes the core distinctions.

Cabin Travel Rules for Pet Dogs

Under IATA's guidance for passengers traveling with a dog or cat in the cabin, the animal and its carrier must fit under the seat in front of the traveler or in another space the airline designates, which in practice limits in-cabin travel to very small dogs. IATA also notes that a dog must be at least eight weeks old and fully weaned before it can travel by air. Beyond that floor, each airline sets its own weight limits, carrier dimensions, and per-flight caps on the number of animals allowed in the cabin, so travelers need to check the specific carrier's pet policy before booking rather than relying on IATA's minimum standard alone.

Cargo Hold Travel: Rules and Breed Restrictions

Larger dogs that cannot fit in the cabin typically travel as checked baggage or air cargo in a pressurized, temperature-controlled hold, inside a hard-sided IATA-compliant crate sized so the dog can stand, turn around, and lie down naturally. IATA describes the hold as a safe, "quieter" and "darkened" environment for many dogs, and states that millions of animals are carried this way every year. However, brachycephalic (flat-faced or snub-nosed) breeds — including pugs, bulldogs, and boxers — face significant restrictions because their shortened airways make them more vulnerable to breathing problems and heat stress during transport. Lufthansa has banned these breeds from its cargo holds since 2020, KLM cannot transport most snub-nosed pets in the hold, and Korean Air Cargo does not accept brachycephalic dogs as cargo at all, according to a PetRelocation industry guide. Other carriers, such as Emirates SkyCargo, restrict brachycephalic dogs to winter-only transport windows tied to ambient temperature.

Flying with a Service Dog: DOT Air Carrier Access Act Rules

In the United States, the Department of Transportation's Air Carrier Access Act (ACAA) rule, finalized in December 2020 and effective in early 2021, defines a service animal for air travel as a dog — of any breed — that is individually trained to do work or perform a task for a person with a disability. That 2021 rule change removed emotional support animals from the definition of service animal, meaning airlines are no longer required to let ESAs fly free or without a pet fee. Under the DOT rule, airlines cannot impose breed or weight restrictions on qualifying service dogs, and travelers can bring up to two service dogs per flight. Airlines may require passengers to submit the DOT's Service Animal Air Transportation Form, generally at least 48 hours before departure, and for flights of eight hours or longer, a DOT relief attestation form confirming the dog will not need to relieve itself or that the passenger has a plan to manage it.

Health Certificates and Import Paperwork

Most interstate and nearly all international dog flights require a veterinary health certificate, and cross-border travel typically adds rabies documentation. In the United States, the CDC updated its dog-importation rules effective August 1, 2024, with a transition period that ran through July 31, 2025. Under the current framework, dogs entering the U.S. must be healthy on arrival, at least six months old, microchipped, and accompanied by a confirmed CDC Dog Import Form receipt. Dogs that were in a country the CDC classifies as high-risk for dog rabies within the prior six months must enter through one of a small number of airports with CDC-registered Animal Care Facilities and, without a valid rabies titer from a CDC-approved lab, may face a mandatory quarantine at the owner's expense. For pets leaving the U.S., the Animal and Plant Health Inspection Service (APHIS), part of the U.S. Department of Agriculture (USDA), generally requires an accredited veterinarian to issue a health certificate that APHIS then endorses; APHIS does not charge its endorsement fee for qualifying service dogs, though it does charge for pets and emotional support animals.

International Flights: EU Pet Passport vs. Animal Passport's Biometric ID

Travelers researching "can dogs fly on airplanes" for international trips often run into the EU pet passport, and it is important not to confuse it with private digital identity tools. The European pet passport is a government-issued, EU-standard document that records a dog's microchip number, rabies vaccination history, and owner details, issued by an authorized veterinarian and mandatory for pet dogs moving between EU countries, according to the European Commission's Your Europe portal. A dog must generally be at least 12 weeks old for its first rabies vaccination, and owners must wait at least 21 days after that first dose before traveling.

Animal Passport, the publisher of this article, offers a different kind of product: a digital animal and livestock passport that uses muzzle biometrics — a nose print treated as unique, similar to a fingerprint — captured through a phone camera. The record can bind an animal to its owner, breed, and estimated age (from a dental photograph, with a confidence score) and body condition score (1–5, from a side-profile photo), alongside vaccination history. This system was used during livestock flood rescue efforts in Pakistan in August 2025, helping farmers reclaim animals after paper ear tags were washed away. Animal Passport's biometric ID is not an EU pet passport, an airline-approved travel document, or a government-issued document, and it does not replace the health certificates, rabies proof, or customs paperwork airlines and border agencies require. Read more about how the two systems differ on the Animal Passport blog, or learn about the underlying muzzle-biometric identity approach at Animal Passport.

Dog Breeds That Face Flying Restrictions

No government agency maintains a universal list of dog breeds banned from all air travel; restrictions instead come from individual airlines, largely targeting brachycephalic breeds in the cargo hold. Breeds commonly restricted or banned from cargo include:

• English and French Bulldogs
• Pugs
• Boxers
• Shih Tzus and Pekingese
• Boston Terriers

Many of these breeds can still fly in the cabin on airlines that allow it, provided they meet size and carrier requirements, since the cabin's climate control avoids the heat and pressure risks associated with the cargo hold. Always confirm a specific breed's status directly with the airline before booking, since policies vary carrier by carrier and can change seasonally with temperature restrictions.

How to Prepare a Dog for a Flight

1. Confirm the airline's specific pet, cargo, or service-animal policy — IATA sets a floor, not the final word.
2. Book the dog's spot early; many flights cap the number of animals in the cabin or hold.
3. Schedule a veterinary visit for a health certificate and any required rabies documentation, timed to the airline's and destination's validity window.
4. Get an IATA-compliant carrier or crate sized so the dog can stand, turn around, and lie down.
5. For international trips, check destination-country entry rules in addition to airline and departure-country rules.
6. For service dogs, submit the DOT Service Animal Air Transportation Form within the airline's required notice window, typically 48 hours before departure for longer flights.

Frequently Asked Questions

Can dogs fly on airplanes in the cabin?

Yes, if the dog and its carrier fit under the seat in front of the passenger, per IATA's guidance for in-cabin travel. This generally limits cabin travel to small dogs, and each airline sets its own weight and carrier-size limits on top of that baseline.

Are dogs safe flying in the cargo hold?

IATA states that millions of animals are carried safely in the cargo hold every year and describes it as a quiet, dark environment many dogs tolerate well. However, brachycephalic breeds face elevated breathing risk in the hold, which is why carriers including Lufthansa and Korean Air Cargo restrict or ban them there.

Do service dogs fly for free on airplanes?

Yes. Under the U.S. Department of Transportation's Air Carrier Access Act rule, a trained service dog flies in the cabin with no pet fee, and airlines cannot impose breed or weight restrictions on a qualifying service dog.

Can emotional support animals fly for free like service dogs?

No. The DOT's 2021 rule change removed emotional support animals from the legal definition of service animal for air travel, so airlines now treat ESAs as ordinary pets subject to standard pet fees and policies.

Do dogs need a health certificate to fly?

Most interstate and nearly all international flights require a veterinary health certificate, and international trips typically also require proof of rabies vaccination. Requirements vary by destination, so confirm with both the airline and the destination country's import agency.

What dog breeds are not allowed to fly?

There is no single government-wide ban list; instead, individual airlines restrict brachycephalic (snub-nosed) breeds such as bulldogs, pugs, and boxers from the cargo hold because of breathing risk, while often still allowing them in the cabin if they meet size limits.

Is an EU pet passport the same as a dog's health certificate for flying?

Not exactly. The EU pet passport is a lifelong document recording a dog's microchip and rabies vaccination history for travel between EU countries, issued by an authorized veterinarian, per the European Commission. Airlines and non-EU destinations may still require a separate, trip-specific health certificate.

Is Animal Passport's biometric ID accepted by airlines as a travel document?

No. Animal Passport's muzzle-biometric digital identity product is designed for animal and livestock identification, not as an airline-approved or government-issued travel document, and it does not replace a health certificate, rabies proof, or an EU pet passport.

The Bottom Line

Dogs can fly on airplanes, but the rules depend heavily on which of the three lanes — cabin pet, cargo pet, or service dog — the trip falls into, plus the specific airline and destination. IATA and the DOT set the baseline standards, while agencies like USDA APHIS and the CDC control the paperwork for crossing borders. For EU travel specifically, the government-issued EU pet passport handles official entry requirements; it is a separate system from Animal Passport's biometric livestock identity tool, which focuses on identifying and tracking animals rather than authorizing air travel.