American Airlines Dog Travel in 2026: Cabin, Cargo and Service Dog Rules

American Airlines dog travel means flying a dog with American Airlines in one of three ways: as a carry-on pet in an under-seat carrier for $150 each way, as a trained service dog at no charge, or as a shipment through American Airlines Cargo. As of October 2026, American's official pets page says cabin dogs must stay in a closed carrier under the seat for the whole flight. They can fly only on eligible routes within and between the U.S., Canada, Mexico, Central America and the Caribbean, and not to or from Hawaii.

This guide is published by Animal Passport and was last updated on October 10, 2026. It covers dogs specifically. That means size and breed limits, what happens when a dog is too big for the cabin, service dogs, and the government paperwork dogs need for cross-border flights. Every rule below comes from American Airlines' own pet, service animal, fee and cargo pages, or from the U.S. Centers for Disease Control and Prevention (CDC), the United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) and the U.S. Department of Transportation (DOT). For rules that also cover cats, see our broader American Airlines pet rules and fees guide.

How can a dog fly on American Airlines?

American Airlines' Traveling with pets page (2026) says a dog can travel as a carry-on pet or through American Airlines Cargo, depending on breed and size. It also lists a checked-pet option, but only for a narrow group of travelers. Fully trained service dogs fly in the cabin free if they meet the requirements.

American Airlines' bag and optional fees page (2026) says all pet fees are nonrefundable and apply per kennel, each way. If your trip includes a stopover or connection of 4 hours or more, the fee is charged again for each connecting segment.

Can my dog fly in the cabin on American Airlines?

Yes, if your dog fits in a carrier that fits under the seat. American's pets page (2026) limits carry-on pets to cats and dogs that meet its size, age and destination rules. Your dog must stay inside the closed, zipped carrier and under the seat in front of you for the entire flight. Dogs flying within the U.S. and Puerto Rico must be at least 8 weeks old.

What size dog carrier does American Airlines allow?

American Airlines publishes these carry-on carrier limits for 2026:

• Soft-sided (recommended), all flights: 18 x 11 x 11 inches (46 x 28 x 28 cm)
• Hard-sided, American Mainline: 19 x 13 x 9 inches (48 x 33 x 22 cm)
• Hard-sided, American Eagle regional flights: 16 x 12 x 8 inches (40 x 30 x 20 cm)

Soft carriers must be secure, padded and water-repellent, with nylon mesh ventilation on at least 3 sides. They may be slightly larger than the hard-sided limits, but American says they must still fit under the seat without being heavily collapsed. If any leg of your trip is on an American Eagle regional jet, measure your carrier against the smaller Eagle limits.

Is there a weight limit for dogs in the cabin?

American's pets page does not publish a general weight limit for carry-on dogs. The test it applies is fit: the dog must sit comfortably in a carrier that goes under the seat. The only stated weight cap is 20 pounds (9.07 kg) for the dog and carrier combined, in First and Business on the three-cabin Airbus A321T, where carriers go in a dedicated animal compartment. American says it weighs those at check-in. If your dog is close to the carrier limits, call American Reservations before you book.

How many dogs can fly per flight, and where can you sit?

American caps carry-on pets per aircraft. As of 2026, most mainline aircraft allow up to 20 pet carriers across all cabins, not counting service animals. American Eagle regional jets allow 1 carrier in the premium cabin and 5 in the main cabin. Pets are not permitted in First or Business on the Boeing 777-200, 777-300ER, 787-8 or 787-9 because those seats have no under-seat storage. Carry-on pets are also not allowed in bulkhead or exit-row seats, which American attributes to Federal Aviation Administration (FAA) safety requirements. Book your dog's spot early.

How much does American Airlines dog travel cost?

As of October 2026, American Airlines charges $150 per kennel, each way, for a carry-on dog on eligible routes. Checked dogs of eligible military and State Department travelers cost $200 per kennel, or $150 to or from Brazil. American Airlines Cargo prices vary with the trip and the size of the dog and kennel, and are confirmed at booking. Service dogs fly free.

American says it does not take cash or checks for pet fees, and it does not collect pet fees for flights operated by partner airlines. If your ticket says "Operated by" another airline, pay that airline at check-in.

What if my dog is too big for the cabin?

For most travelers, a dog that doesn't fit under the seat has to ship through American Airlines Cargo. American's pets page (2026) says it accepts checked pets at the ticket counter only for active-duty U.S. military and U.S. State Department Foreign Service personnel traveling on official orders. Those travelers can check up to 2 pets, must contact Reservations at least 48 hours before travel, and need a veterinary health certificate issued within 10 days of travel.

Shipping a dog with American PetEmbark

American Airlines Cargo's American PetEmbark service carries pets that don't qualify as carry-on or checked pets. According to American Airlines Cargo's "How to Transport Your Pet" guide (2026):

• Dogs must be at least 8 weeks old for domestic travel and at least 6 months old for international travel.
• American recommends booking at least 24 hours and no more than 10 days before travel, or 30 days if the dog is flying into London Heathrow. You don't pay until the dog is accepted at the airport.
• At drop-off, offer your dog a light meal and water within 4 hours, attach a bag of food to the kennel, and bring 2 forms of ID plus all health documents.
• Dogs are usually ready for pickup about 1 hour after the flight lands, but this can vary by station and service type.

For dogs in the hold, American requires a rigid kennel with a metal door, big enough for the dog to stand, turn, sit and lie down. The dog and kennel together cannot weigh more than 100 lbs (45 kg).

Which dog breeds can't fly in the hold on American Airlines?

American Airlines does not accept brachycephalic (snub-nosed) dogs, or any mix of them, as checked pets. Its 2026 list includes all Boxer, Bulldog, Mastiff and Pug breeds, plus the Boston Terrier, Shih Tzu, Pekingese, Chow Chow, Shar Pei, Pit Bull, Cane Corso and Presa Canario. A small dog of these breeds can still fly in the cabin if it fits the carrier rules.

Temperature limits for dogs outside the cabin

American's 2026 rules ban pets from traveling outside the cabin if the current or forecast temperature anywhere on the itinerary is above 85°F (29.4°C). The same applies if the ground temperature is below 45°F (7.2°C). A veterinarian's acclimation letter can waive the cold limit, but no pet can be checked below 20°F (-6.6°C). From May 1 to September 30, pets outside the cabin cannot travel to, through or from Phoenix (PHX), Tucson (TUS), Las Vegas (LAS) or Palm Springs (PSP). Following American Veterinary Medical Association (AVMA) guidance, American does not accept sedated or tranquilized dogs in any category.

Service dogs vs. emotional support dogs on American Airlines

The U.S. Department of Transportation's final rule, "Traveling by Air With Service Animals," published in the Federal Register on December 10, 2020, defines a service animal as a dog of any breed or type that is individually trained to do work or perform tasks for a person with a disability. The same rule lets airlines treat emotional support animals as pets and limit each passenger to 2 service animals.

American follows that rule. Its service animal page (2026) says emotional support animals, comfort animals and service animals in training fly as pets, with normal pet fees and carrier rules. For a trained service dog, American says:

1. Complete the DOT Service Animal Air Transportation Form. It covers the dog's health, training and behavior.
2. If any flight on your itinerary is over 8 hours, also complete the DOT Service Animal Relief Attestation Form.
3. Submit the forms to American's Special Assistance Desk at least 48 hours before departure, or bring them to the airport on the day of travel.
4. Once approved, you receive a Service Animal ID (SVAN ID) to use on future bookings. It expires when the dog's vaccination expires.

The dog must be at least 4 months old and harnessed, leashed or tethered at all times. It must also fit at your feet, under your seat or on your lap. American says a dog that growls, bites or lunges and can't be controlled will be treated as a pet.

What documents does a dog need to fly American Airlines internationally?

American leaves government entry rules to the traveler. It checks some documents at check-in, so missing paperwork can stop your dog at the airport.

Flying a dog into or back to the United States

The CDC's dog import rules took effect on August 1, 2024. What your dog needs depends on where it was vaccinated and which countries it has been in during the 6 months before arrival. According to the CDC (2024), dogs that have been only in dog rabies-free or low-risk countries need a CDC Dog Import Form receipt, a microchip that a universal scanner can read, and must be at least 6 months old. The form is free, and its receipt is valid for 6 months.

Here sources set different bars. The CDC allows rabies-vaccinated dogs from high-risk countries to enter if they meet extra requirements. American Airlines is stricter: it does not accept dogs as carry-on pets if they started in or visited a CDC high-risk country in the 6 months before travel. Service dogs that meet CDC requirements are exempt. The CDC's high-risk list includes destinations in American's network, such as the Dominican Republic, Guatemala, Honduras, El Salvador, Belize, Colombia, Brazil and Peru. Check the list before you book a round trip with a carry-on dog.

Flying a dog to Mexico

According to the USDA APHIS page on pet travel from the United States to Mexico (last modified September 21, 2026), Mexico has required a New World screwworm (NWS) inspection certificate for pet dogs since August 3, 2026. A USDA-accredited veterinarian must sign it no more than 5 days before entry, and it does not need APHIS endorsement. American Airlines says it checks this certificate at check-in, including for service dogs.

On arrival, Mexico's animal health authority, SENASICA, checks that the dog is free of external parasites and has no fresh or healing wounds. APHIS says disposable bedding, toys and extra food in the carrier will be removed and destroyed. APHIS also notes that dogs returning to the U.S. from Mexico must meet its screwworm-freedom certification requirements, because Mexico has been considered affected by screwworm since November 22, 2024.

Routes where carry-on dogs are not allowed

American's pets page lists these carry-on pet restrictions as of October 2026:

• No carry-on pets to or from Hawaii. Eligible checked pets must connect only via Honolulu (HNL) and follow Hawaii's quarantine rules.
• No carry-on pets on trans-Atlantic or trans-Pacific trips.
• No carry-on pets to or from Argentina, Brazil, Chile, Colombia or Uruguay.
• No carry-on pets to Jamaica.
• Pets traveling to Trinidad and Tobago (POS) cannot arrive before 8 a.m. or after 4 p.m.

How to book a dog on an American Airlines flight

1. Check that every leg of your route allows carry-on pets and that your dog's carrier meets the smallest aircraft limit on the trip.
2. Find your trip on aa.com or in the American app. Under Additional Services, select Add carry-on pets.
3. Review and accept the carry-on pet requirements, choose the flights your dog will take, and confirm.
4. For trips abroad, to Mexico or back into the U.S., book a USDA-accredited veterinarian early and complete any CDC Dog Import Form.
5. At the airport, go to the American ticket counter to pay the fee and have staff check your dog and carrier.
6. Along with the dog carrier, you can bring either a personal item or one carry-on bag, not both. American says pet strollers must be checked, and normal bag fees apply.

Is Animal Passport a dog travel document? No.

Searches about flying with dogs often mix up airline forms, government health certificates and "pet passports" such as the European Union pet passport. The documents American Airlines and border officials accept are official ones. Examples include the DOT service animal forms, the CDC Dog Import Form, health certificates from USDA-accredited veterinarians and Mexico's NWS inspection certificate.

Animal Passport is a different kind of product. It is a digital animal and livestock passport that identifies an animal by its muzzle print, a nose pattern that is unique like a fingerprint. The owner captures it with a phone. The record links the animal to its owner, breed, estimated age, body condition and vaccination history. Age is estimated from a dental photograph with a confidence score, and a side-profile photo gives a body condition score from 1 to 5. In August 2025, Animal Passport was used in livestock flood rescue in Pakistan, so farmers could reclaim animals after paper tags washed away.

Animal Passport is not issued by any government and does not replace a microchip record, health certificate, CDC form or EU pet passport. It does not provide veterinary diagnosis or legal advice. For more on animal identification, read the Animal Passport blog.

The bottom line on American Airlines dog travel

As of October 2026, small dogs fly in an under-seat carrier for $150 each way, bigger dogs go through American Airlines Cargo, and trained service dogs fly free. These rules changed in 2024 and again in 2026, so check aa.com and the official government pages within a week of departure.