American Airlines Travel With Dog: Fees, Carrier Rules and Documents (October 2026)

As of October 2026, American Airlines lets you travel with a dog in the cabin if the dog fits inside a closed carrier under the seat in front of you, stays in it for the whole flight, and you pay a carry-on pet fee of $150 per kennel, each way (American Airlines, 2026). In short, American Airlines travel with dog means following the airline's carry-on, cargo and service-animal rules plus the government entry rules of your destination. Carry-on dogs are allowed within the U.S. and to Canada, Mexico, Central America and the Caribbean, but not on trans-Atlantic, trans-Pacific or Hawaii flights.

By Animal Passport. Last updated October 10, 2026. This guide summarizes official airline and government pages; it is not legal or veterinary advice. Always confirm with American Airlines before you fly.

What are the ways to fly with a dog on American Airlines?

American Airlines (AA) offers four routes for a dog, and which one applies depends on the dog's size, your status and your destination. American's pet policy page (2026) states that carry-on pets are limited to cats and dogs that meet size, age and destination requirements, and that larger animals travel through American Airlines Cargo.

American also notes that a pet checked at the start of a trip must stay in the same category, checked pet or cargo, for the entire journey.

How much does it cost to bring a dog on American Airlines?

The carry-on pet fee is $150 per kennel, each way, on routes within and between the United States and Canada, Mexico, Central America and the Caribbean, according to American Airlines' fee table (2026). Checked pets for eligible military and State Department travelers cost $200 per kennel, or $150 to and from Brazil.

Three fee details catch travelers out:

• Long connections cost extra. American Airlines (2026) says that if your trip includes a stopover or connection of 4 hours or more, the fee applies to each segment.
• Fees are nonrefundable and are charged per kennel, each way.
• Codeshare flights are separate. American does not collect pet fees for flights operated by partner airlines, even with an AA flight number. Look for "Operated by" on your ticket and pay that airline at check-in.

You pay at the airport ticket counter or a travel center by credit card or paper voucher. American Airlines states it does not accept cash or checks for pet fees.

What size carrier does American Airlines allow for a dog?

American Airlines recommends a soft-sided carrier, which can measure up to 18 x 11 x 11 inches (46 x 28 x 28 cm) on all flights. Hard-sided carriers are capped by aircraft type, according to the airline's carrier guidelines (2026):

Soft carriers must be padded, water-repellent and have mesh ventilation on 3 or more sides. The dog must fit comfortably inside with the carrier closed. American does not publish a general weight limit for main-cabin carry-on pets; the one stated weight cap is 20 pounds (9.07 kg) for pet plus carrier in the premium-cabin animal compartments on the 3-cabin Airbus A321T.

How many dogs are allowed per flight?

Space is limited. American Airlines (2026) caps carry-on pets at 20 carriers across all cabins on mainline aircraft, and at 5 in the main cabin plus 1 in the premium cabin on American Eagle regional jets, excluding service animals. Pets are not allowed in First or Business on the Boeing 777-200, 777-300ER, 787-8 and 787-9 because there is no under-seat storage.

Where can you sit with a dog?

Carry-on pets are not permitted in bulkhead or exit-row seats, or in seat 13D on the Airbus A321neo, according to American's seating rules (2026). With the carrier, you may bring only one other item: either a personal item or a carry-on bag, not both. Pet strollers must be checked and standard bag fees apply.

Where can you fly with a dog in the cabin on American Airlines?

American Airlines (2026) says you can travel with a pet on most flights up to 12 hours, including within the 48 contiguous states, Alaska, Puerto Rico, St. Croix, St. Thomas, Canada and Mexico. Carry-on pets are not accepted:

• On trans-Atlantic or trans-Pacific trips
• To or from Hawaii (checked pets only, connecting via Honolulu and following Hawaii's quarantine rules)
• To Jamaica
• To or from Argentina, Brazil, Chile, Colombia and Uruguay

Arrivals with a pet in Trinidad and Tobago (POS) must land between 8 a.m. and 4 p.m. Within the U.S. and Puerto Rico, dogs must be at least 8 weeks old.

Where sources differ: American's pet page lists specific approved destinations (the U.S., Canada, Mexico, Puerto Rico and the U.S. Virgin Islands), while its fee table describes carry-on pricing for "Central America and the Caribbean" generally, "based on specific country's entry policy." If you are flying to another Caribbean or Central American country, confirm with American Airlines Reservations before booking.

How do you add a dog to an American Airlines reservation?

American Airlines (2026) lists these steps for adding a carry-on pet:

1. Find your trip on aa.com or in the American app.
2. In Additional Services, select "Add carry-on pets."
3. Review and agree to the carry-on pet requirements.
4. Select the flights your dog will travel on.
5. Confirm the carry-on pet to save the change.
6. At the airport, go to the American ticket counter to pay the fee and have the dog and carrier checked.

Book early. Because each aircraft has a fixed number of pet spaces, adding the dog right after you buy the ticket reduces the risk of a full flight.

What documents does a dog need to fly American Airlines?

Paperwork depends on where you fly. The airline sets cabin rules, but government agencies set entry rules, and American Airlines (2026) says travelers are responsible for meeting them.

Flying into the United States

The U.S. Centers for Disease Control and Prevention (CDC) sets the rules for all dogs entering the U.S., including returning pets and service dogs. Requirements in effect since August 1, 2024 depend on where the dog was vaccinated and which countries it was in during the six months before arrival, according to the CDC (2024). Unvaccinated dogs that have been in a high-risk rabies country in that period will not be allowed in. American Airlines (2026) adds its own embargo: it will not accept dogs as carry-on pets if they came from or visited a high-risk rabies country in the prior six months, although compliant service dogs are exempt.

Flying from the U.S. to Mexico

Effective August 3, 2026, Mexico requires a New World Screwworm (NWS) Inspection Certificate for pet dogs entering from the United States, according to the United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS). The certificate must be signed by a USDA-accredited veterinarian no more than 5 days before entry and does not need APHIS endorsement. American Airlines (2026) checks it at check-in, and the rule applies to service dogs too. In a September 21, 2026 bulletin, USDA APHIS warned that incomplete paperwork can lead to dogs being denied entry or held at Mexican ports. Mexico's inspectors (SENASICA) will also check that the dog has no ticks or other parasites and no fresh wounds, and they may remove bedding, toys and food from a dirty carrier.

Coming back is a separate step. USDA APHIS (2026) states that Mexico has been considered affected by screwworm since November 22, 2024, so dogs returning to the U.S. from Mexico must meet APHIS screwworm-freedom requirements as well as CDC rules.

Europe, Japan and Hawaii

Dogs cannot fly as carry-on pets across the Atlantic or Pacific on American. For eligible checked pets going to the European Union, American Airlines (2026) says the dog must have a tattoo or implanted microchip matching the ID number on its vaccination record, and the traveler is responsible for all EU entry requirements. Checked pets cannot fly to the U.K. or Ireland, but American Airlines Cargo can carry dogs and cats to London Heathrow (LHR) and Manchester (MAN). Hawaii requires compliance with the state's animal quarantine rules.

Which dogs are restricted on American Airlines?

For checked pets, American Airlines (2026) does not accept brachycephalic (snub-nosed) dogs of any mix, including Boston Terriers, Boxers, Bulldogs (all breeds), Pugs, Shih Tzus, Pekingese, Mastiffs and Pit Bulls. These breeds can still fly as carry-on pets if they fit the carrier rules.

Other rules apply to every pet:

• No sedation. Citing the American Veterinary Medical Association (AVMA), American Airlines says it does not accept sedated or tranquilized pets because of higher breathing and heart risks at altitude.
• Heat limits for checked and cargo pets. No travel if the temperature is above 85°F (29.4°C) anywhere on the itinerary, and no hold travel through Phoenix, Tucson, Las Vegas or Palm Springs from May 1 to September 30.
• Cold limits for checked and cargo pets. No travel below 45°F (7.2°C) unless a vet acclimation letter is provided, and never below 20°F (-6.6°C).
• No liability for carry-on pets. American states it assumes no liability for the health or well-being of carry-on pets.

Can a service dog or emotional support dog fly free on American Airlines?

Only service dogs fly free. Under the U.S. Department of Transportation (DOT) final rule announced December 2, 2020, a service animal is a dog individually trained to do work or perform tasks for a person with a disability, and emotional support animals are no longer treated as service animals. Psychiatric service dogs must be treated the same as other service dogs, according to the DOT (2020).

American Airlines' service animal page (2026) applies that rule:

• Emotional support animals, comfort animals and service animals in training travel as pets, and pet fees apply.
• Submit the DOT Service Animal Air Transportation Form at least 48 hours before the flight, or present it at the airport.
• For any flight over 8 hours, the DOT Service Animal Relief Attestation form is also required.
• The dog must be harnessed, leashed or tethered, be at least 4 months old, and fit at your feet, under the seat or on your lap.
• Each passenger may bring up to 2 service animals.
• Once your form is approved, American emails a Service Animal ID (SVAN ID) you can reuse until the dog's vaccination expires.

Pre-flight checklist for flying American Airlines with a dog

1. Confirm the route allows carry-on pets and that the operating carrier is American or American Eagle.
2. Measure your dog in a soft-sided carrier no larger than 18 x 11 x 11 inches.
3. Add the pet to the reservation right after booking.
4. Check government rules: CDC for entry to the U.S., USDA APHIS for export, and the destination's own agency.
5. For Mexico, book a USDA-accredited vet visit within 5 days of entry for the NWS certificate.
6. Choose a seat that is not a bulkhead or exit row.
7. Arrive early, since pet fees are paid and carriers are checked at the ticket counter.
8. Do not sedate the dog.

Is an Animal Passport record a pet travel document?

No. Airline and government pet rules are a different system from the product made by Animal Passport. American Airlines, the CDC and USDA APHIS ask for specific official forms, such as vaccination records, CDC import forms, DOT service animal forms and USDA-accredited veterinary certificates. An EU pet passport is likewise an official document issued under EU rules. Animal Passport is not any of these, and nothing in the airline or government sources above says it can replace them.

Animal Passport is a digital animal and livestock identity record built on muzzle biometrics. A cow's nose print is unique, much like a human fingerprint. Using a phone camera, the record links the animal to its owner, breed, estimated age, body condition and vaccination history. Age is estimated from a dental photo with a confidence score, and body condition is scored 1 to 5 from a side-profile photo. In August 2025, it was used during livestock flood rescue in Pakistan so farmers could reclaim animals after paper tags washed away. That is a livestock ownership and identity use case, not airline travel. You can read more livestock identity coverage on the Animal Passport blog.

What could change before your flight?

Pet rules on American Airlines change with aircraft swaps, seasonal heat embargoes and government disease responses. The 2026 Mexico screwworm certificate is a recent example. American Airlines also says it reserves the right to change rates and terms before payment. Check the airline's pet page and the relevant CDC or USDA APHIS page within a week of departure, and keep copies of every form with you on travel day.