How to Fly a Dog on an Airplane: Cabin, Cargo, and Official Documents

How to fly a dog on an airplane is the process of reserving an airline pet slot, using an International Air Transport Association (IATA)–compliant carrier, and finishing destination health paperwork before departure. As of August 2026, small dogs typically ride in the cabin under the seat; larger dogs usually travel as cargo. Government forms, not a private digital animal ID, are what airlines and border agencies accept.

This guide is for pet owners planning cabin or cargo flights. It is not veterinary diagnosis or legal advice. Confirm the current policy with the airline and a USDA-accredited veterinarian before you buy tickets. Last updated 19 August 2026 by Animal Passport.

Cabin, cargo, or pet shipping?

Most travelers want the dog in the passenger cabin. IATA cabin guidance supporting Container Requirement 1 (CR1) in the Live Animals Regulations (LAR) says an in-cabin dog must travel in an IATA-compliant container that fits under the seat in front of the passenger, or in another place the airline specifies. Only very small dogs and their containers will fit, according to that guidance.

If the dog is too large, remaining options are the aircraft hold or a dedicated pet-shipping product. American Airlines accepts checked pets at the ticket counter only for active-duty U.S. military and U.S. Department of State Foreign Service personnel traveling on official orders. Delta Air Lines points those same official-orders travelers to a separate hold path. Alaska Airlines still publishes a climate-controlled baggage-compartment option, with space subject to availability, breed restrictions, date embargoes, and fleet limits.

Service dogs are a separate category. CDC cites 14 CFR 382.3: a service animal is a dog individually trained to do work or perform tasks for a person with a disability. Emotional support animals are not service animals under that definition. American Airlines states fully trained service dogs may fly in the cabin at no charge if they meet airline rules, but CDC still applies its import rules to service dogs entering the United States.

How to fly a dog on an airplane, step by step

1. Confirm the dog can enter the destination and return home. Destination countries set entry rules, which can change at any time. The United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) 2017 pet-travel explainer still describes the U.S. export workflow: start early, use a USDA-accredited veterinarian, obtain an international health certificate, and have APHIS endorse it when required. CDC, not APHIS, is the primary U.S. authority for dogs entering or returning to the United States.
2. Add the pet to the reservation immediately. Delta uses a first-come, first-served cabin policy and limits pets per cabin (four in Delta Comfort/Delta Main on many flights, two in domestic Delta First, and zero in Delta One and international Business). American Airlines lets customers add a carry-on pet in Additional Services, then pay at the ticket counter. Alaska Airlines tells customers to book the passenger ticket first, then chat or call to reserve pet space.
3. Buy a carrier that meets IATA CR1 and the aircraft. IATA does not certify brands. The dog must sit erect, stand erect, turn around, and lie down in a natural position. IATA’s in-cabin checklist asks whether the container has ventilation on all four sides totaling at least 16 percent of those sides, and whether it is leak-proof, escape-proof, and labelled as a live animal. Delta and American Airlines both describe a common soft-sided size of about 18 by 11 by 11 inches; American Eagle hard-sided limits are smaller.
4. See a veterinarian on the correct timeline. The American Veterinary Medical Association (AVMA) states that travel to another state or country generally requires a Certificate of Veterinary Inspection (CVI) issued within 10 days before air travel, signed by a federally accredited veterinarian. For U.S. export, certificates that USDA must endorse have to be issued by a USDA-accredited veterinarian. Keep originals with the dog.
5. Complete U.S. re-entry forms before you leave, if you will return. CDC requires a CDC Dog Import Form receipt for every dog entering the United States. If the dog will visit a high-risk country for dog rabies, a USDA-accredited veterinarian may need to submit a Certification of U.S.-Issued Rabies Vaccination before the dog leaves the United States.
6. Arrive early and screen with TSA. Delta requires Special Service Counter check-in so an agent can inspect the kennel and collect the fee. After screening, keep the dog in the closed carrier except in designated relief areas.

What documents do you need?

Domestic U.S. flights

Airline policy and state animal-health rules both apply. AVMA tells owners to obtain a CVI within 10 days before interstate air travel and notes that airlines often require a copy before boarding. American Airlines and Delta both set a minimum age of 8 weeks for pets traveling within the United States. That airline minimum is not the same as CDC’s 6-month minimum for dogs entering the United States from abroad.

Flying a dog into or back to the United States

As of August 2026, CDC requirements depend on where the dog was vaccinated and which countries it visited in the 6 months before U.S. entry. CDC’s FAQ page, updated 28 April 2026, states that all dogs entering or returning to the United States must have a CDC Dog Import Form receipt; must appear healthy; must be at least 6 months of age; and must have a microchip detectable with a universal scanner. The form is free, according to CDC’s page for dogs from dog-rabies-free or low-risk countries, and the receipt is valid for 6 months from issuance unless the country of departure changes or the dog visits a high-risk country.

Dogs that have been only in dog-rabies-free or low-risk countries in those 6 months need that receipt plus the health, age, and microchip conditions. Dogs that have been in any high-risk country need additional documents. CDC will not allow an unvaccinated dog that has been in a high-risk country in the past 6 months to enter. Foreign-vaccinated dogs from high-risk countries must have a reservation at a CDC-registered animal care facility and arrive at that facility’s airport. CDC’s FAQ notes there are currently no such facilities in Alaska, Hawaii, or U.S. territories.

CDC and some airline pages do not fully match on age. CDC requires 6 months at U.S. entry. American Airlines’ pets page still states that dogs arriving from high-risk countries need to be at least 16 weeks old. Follow CDC’s 6-month rule for border entry; an airline cannot waive a federal import requirement.

USDA APHIS adds a New World screwworm overlay. Delta’s pet-travel overview, citing APHIS, says dogs arriving from affected countries need documentation issued no more than 5 days before arrival stating the dog was inspected and is free of screwworm, or was infested, quarantined, and treated until free. American Airlines flags the same USDA rules and, for travel to Mexico, a New World Screwworm Inspection Certificate from a USDA-accredited veterinarian issued within 5 days before entry.

Flying to or within the European Union

An EU pet passport is a government identification document for dogs, cats, and ferrets moving between EU countries. It is not a product of Animal Passport. Your Europe, last checked 15 June 2026, states that a European pet passport follows an EU standard model, is mandatory for travel between EU countries, and is issued only to pet owners resident in the EU by an authorised veterinarian. It records the microchip or (if applied before 3 July 2011) a clearly readable tattoo, rabies vaccination, owner and vet details, and, where required, tapeworm treatment.

The European Commission’s Directorate-General for Health and Food Safety summarizes intra-EU conditions under Commission Delegated Regulation (EU) 2026/131: microchip; rabies vaccination at 12 weeks of age or older, valid from at least 21 days after the primary dose; tapeworm treatment 24 to 120 hours before entering Finland, Ireland, Malta, or Norway (and Northern Ireland as listed); and the passport. Travelers from a non-EU country typically need an EU animal health certificate issued by an official veterinarian not more than 10 days before arrival, according to Your Europe. From 1 January 2021, EU pet passports issued to a pet owner resident in Great Britain are no longer valid for travel from Great Britain to an EU country or Northern Ireland.

What happens at TSA screening?

The Transportation Security Administration (TSA) screens cabin pets at the checkpoint. In a 14 December 2022 press release, TSA stated that travelers must bring the pet in a hand-held carrier, remove the pet just before screening, and place the empty carrier on the X-ray belt. Never place a pet in the X-ray tunnel. Carry the dog through the metal detector if possible, or walk the dog through on a leash. An officer typically swabs the owner’s hands for explosive trace detection. If the dog may panic when removed, ask for a private screening room.

Carrier rules under the IATA Live Animals Regulations

IATA’s traveling-with-pets page states that animals must be at least eight weeks old and fully weaned before traveling by air, and that many airlines require the pet to be older for international flights. IATA Container Requirement 1, Edition 52 (January 2026), repeats that weaned puppies younger than eight weeks must not be shipped because of dehydration risk.

For cargo crates, CR1 requires rigid construction, a solid leak-proof floor, ventilation on all four sides totaling at least 16 percent of those sides, nose- and paw-proof openings (maximum 25 mm by 25 mm for dogs), absorbent bedding, and a green “Live Animals” label. Snub-nosed breeds require a container 10 percent larger than the standard formula.

In-cabin containers are a CR1 subset: construction does not have to be rigid, spacers are not required, and food and water dishes are not required. Soft-sided bags are allowed in the cabin under those exceptions, but IATA still wants a Live Animal label that does not block vents. Compressing a soft-sided bag under a seat can reduce ventilation. Dogs must not be removed from the container during the flight, according to IATA’s cabin guidance.

Travelling has an unsettling effect on animals and they must be disturbed as little as possible. Domesticated animals prefer dim light as this helps to calm them and reduce stress.

That language is from IATA’s Guidance for Passengers Traveling with their Dog or Cat in the Cabin. IATA also recommends a light meal at least two hours before the flight, a short drink, and exercise immediately before crating.

Should you sedate a dog for a flight?

Not as a routine plan. IATA does not encourage sedatives or tranquilizers for cabin or cargo transport because of adverse effects, a view it says is endorsed by veterinary organizations such as AVMA. AVMA’s short-nosed-dog FAQ strongly recommends avoiding tranquilization because it can increase injury and health-problem risk. American Airlines, citing AVMA, says it does not accept sedated or tranquilized pets, because those drugs raise respiratory and cardiovascular risk at altitude.

Short-nosed (brachycephalic) dogs

AVMA’s air-travel FAQ explains that brachycephalic breeds—pugs, Boston terriers, boxers, some mastiffs, Pekingese, Lhasa Apsos, Shih Tzus, and bulldogs—are more prone to airway collapse and overheating in a crate. AVMA cites U.S. Department of Transportation statistics released in July 2010: over a five-year period, about one-half of 122 dog deaths associated with airline flights involved short-faced breeds, including 25 English bulldogs and 11 pugs. American Airlines lists brachycephalic and snub-nosed dogs, including mixes, that it will not accept as checked pets.

Route bans still apply after you pay

American Airlines does not permit carry-on pets on trans-Atlantic or trans-Pacific trips, to Jamaica, to several South American countries, or to or from Hawaii, and it will not accept checked pets when the current or forecast temperature is above 85°F (29.4°C) anywhere on the itinerary. Delta does not permit cabin pets to or from destinations including Australia, Hawaii, Hong Kong, the United Kingdom, and the United Arab Emirates. Always re-check the operating carrier, because partner flights can add a second set of rules.

Animal Passport is not an airline or EU travel document

Search results for “pet passport” mix two different things. The EU pet passport and USDA or CDC certificates are official movement documents. Animal Passport is a private digital animal and livestock identity record. It uses muzzle biometrics—a nose print unique like a fingerprint—captured on a phone. The record can bind owner, breed, estimated age, body condition, and vaccination history, with age estimated from a dental photograph plus a confidence score and body condition scored 1–5 from a side-profile photo. In August 2025, that identity layer was used in livestock flood rescue in Pakistan so farmers could reclaim animals after paper tags washed away.

That history matters for proving which animal is yours when a collar or tag fails. It does not replace a CDC Dog Import Form, a USDA-endorsed health certificate, an EU pet passport, a microchip scan, or an airline kennel inspection. For more field notes on identity versus paperwork, see the Animal Passport blogs.

Day-of-travel checklist

• Printed or phone copy of the CDC Dog Import Form receipt if you will enter the United States, plus originals of any USDA-endorsed or destination health certificates.
• Rabies certificate and microchip number that match the dog.
• Closed, labelled carrier that already fits under the assigned seat, practiced at home.
• Leash for the TSA walk-through; an absorbable pad in the carrier.
• Light meal about two hours before crate-up; water until departure; a relief walk.
• No sedatives unless a veterinarian directed them and the airline was told.

IATA Container Requirement 1 says females with suckling young and unweaned animals must not be accepted, and that dogs should not be shipped for seven days after giving birth. Ask a veterinarian whether the trip is appropriate if the dog is elderly, in poor body condition, or pregnant in the last third of gestation.

How to fly a dog on an airplane succeeds when the reservation, the carrier, and the government forms agree. Book the pet slot first, measure the carrier against the aircraft, and treat CDC and destination rules as controlling even when an airline page is shorter or older.