American Airlines Pet Policy: Verify Before You Fly

The American Airlines pet policy gives you a starting point, not approval for a trip. American limits carry-on pets to cats and dogs that meet its rules for size, age, and destination. As an initial screen, American says pets may travel on most flights up to 12 hours or on flights to or from select listed locations. Check the current list and itinerary-specific restrictions on the official pet page, because its footnoted restrictions can change. The pet must stay in its carrier under the seat. A fully trained service dog follows a separate process. It may fly in the cabin if it meets American's rules (American Airlines).

Get three confirmations before you book

An itinerary can involve three separate sources of instructions:

American Airlines must confirm its requirements for the pet and each flight it handles. Ask it to check the travel category, route, and destination. It must also check the aircraft, carrier, and availability.
The destination authority must confirm its entry requirements. Ask what documents and steps apply to this pet and destination.
An operating partner must confirm a flight that it runs. For service dogs, American tells travelers to call the partner airline. Travelers must use that airline's forms (American Airlines). Ask the operating partner which of its instructions apply to the segment.

A generic web answer cannot make any of those decisions. It does not have the airline's live acceptance information. It also lacks decisions from the destination authority and the operating partner.

Our verdict: use this guide as a checklist. It cannot serve as permission to fly.

For a broader starting point, see our airline pet policies guide.

Who confirms what?

Responsible party	What it must confirm	What it cannot confirm for another party
American Airlines	American's travel category and requirements for the pet and each flight it handles	A destination authority's entry decision or a partner airline's process
Destination authority	The entry requirements and documents for the destination	Airline acceptance, aircraft fit, or space on a flight
Operating partner	Its requirements for a segment it runs, including its service-animal process and forms when applicable	American's process for a different segment or the destination authority's entry decision
This guide	Which questions to ask and which official pages to reopen	Approval for a pet, document, carrier, flight, route, or destination

This division matters because one confirmation does not replace the others. American can explain its own process, but that answer does not decide entry at the destination. A destination authority can explain entry rules, but it does not accept a pet onto a flight. If a partner airline runs a segment, its process also needs a separate check.

What can you check before contacting American?

These current rules can help you screen an itinerary and prepare your questions. They do not confirm acceptance for a pet, kennel, or flight.

Check	What American currently says	What still needs confirmation
Flight and destination	On the page checked October 15, 2026, American lists the 48 contiguous United States, the US and Canada, Alaska, Mexico, Puerto Rico, St. Croix, and St. Thomas. It says pets may travel on most flights up to 12 hours or on flights to or from those locations.	Reopen the official pet page for the current list and footnoted restrictions, then ask American to apply them to the itinerary.
Adding a carry-on pet	The page checked October 15, 2026 lists a $150 carry-on pet fee per kennel and provides an online “Add a carry-on pet to your trip” flow. At the airport, go to the American ticket counter to pay the fee and have the pet and kennel checked.	Confirm the current fee and that the pet can be added and accepted on every American-operated flight.
Hard-sided kennel	American's current table lists 19 × 13 × 9 inches on American Mainline and 16 × 12 × 8 inches on American Eagle. A non-collapsible kennel still cannot exceed the under-seat dimensions of any aircraft in the journey.	Ask Reservations for the limit on every aircraft in the itinerary before choosing the kennel.
Soft-sided collapsible kennel	American's current table recommends a maximum of 18 × 11 × 11 inches. The kennel must fit under the seat without excessive collapse and be secure, padded, water-repellent, with nylon mesh ventilation on at least three sides.	Ask American to confirm the current limit, kennel, and aircraft fit for the exact flights.
Service-animal form	American recommends electronic submission of the completed DOT form at least 48 hours before the flight. Its current page also permits presenting the completed form at the airport on the day of travel.	Check the live service-animal process and ask each operating airline which forms and steps apply.

Which American Airlines travel category fits your animal?

Start with the type of travel you need. The table points you to the next check. It does not approve your pet.

Travel category	What the current American page says	What to verify
Carry-on pet	Only cats and dogs that meet rules for size, age, and destination can be carry-on pets (American Airlines).	Ask American to check the pet, carrier, plane, route, destination, and availability for each flight.
Checked pet	American accepts checked pets at the ticket counter only for active-duty US military and US State Department Foreign Service staff on official orders. Restrictions apply (American Airlines).	If this category fits, ask American to check its rules and the exact trip.
Fully trained service dog	American says a fully trained service dog may fly in the cabin if it meets the rules (American Airlines).	Check the live process, forms, operating airline, destination, and itinerary.
Cargo inquiry	If a pet is too large for the cabin, American points travelers to American Airlines Cargo (American Airlines).	Ask the cargo team whether it has a service for this pet and route. A referral is not acceptance.

Key takeaways

Use the live airline page for American's current carry-on, checked-pet, and cargo instructions.
Call Reservations about the largest non-collapsible carrier that will fit on each plane, as American directs (American Airlines).
Check destination requirements with the destination authority. Our USDA pet travel guide can help you find a starting point, but it cannot approve a trip.
Treat cargo as a question. IATA offers broad help on pet crates and live-animal trips. It cannot say that American will take a pet on a specific trip (IATA).

Can your pet travel in the cabin?

American limits carry-on pets to cats and dogs. They must meet its rules for size, age, and destination. As a screening rule, American says pets may travel on most flights up to 12 hours or on flights to or from select listed locations. Check the current destination list and itinerary-specific footnotes on the live pet page. The pet must stay in the carrier under the seat. These general rules do not approve a pet, carrier, or flight.

American's page checked October 15, 2026 lists a $150 carry-on pet fee per kennel and provides an online “Add a carry-on pet to your trip” flow. At the airport, go to the American ticket counter to pay the fee and have the pet and kennel checked. Recheck the fee before travel. Completing the online flow does not replace itinerary-specific confirmation.

Before booking, ask American to confirm:

Whether the cat or dog can travel under the carry-on rules on each flight.
Whether the route and destination meet the rules on the live pet page.
The largest non-collapsible carrier that will fit on each plane.
Which documents American wants to see for this trip.
Whether another airline operates any segment and needs a separate check.

Our pet carrier backpack guide can help you review carrier designs after American confirms which rules apply. A product page cannot say whether the airline will accept your pet.

Which documents should you verify?

The checked sources do not give one paperwork list for every pet and trip. Ask American what it needs for the pet, travel category, route, destination, and flights. Then ask the destination authority what it requires. If another airline runs a segment, ask that operating partner about its process too.

The USDA APHIS pet-travel page remains a verification destination. It is not counted here as a checked source because the earlier runner received an HTTP 403 response on October 7, 2026.

Document verification checklist

Give American the pet, travel category, route, destination, and flights.
Ask which documents American needs for that exact trip.
Ask the destination authority which documents and steps it requires.
Contact the operating partner for any segment that another airline runs.
If a dog will enter the United States, follow the CDC link on American's pet page. American says those rules apply to every dog entering the country, including service dogs and pets returning home (American Airlines).
Reopen the live airline and authority instructions before travel.

Do not reuse a paperwork list from a different route or an earlier trip. This guide cannot confirm a form, certificate, or deadline.

How should you verify the carrier?

For a carry-on pet, American says the pet must stay in the carrier under the seat (American Airlines). Its table checked October 15, 2026 lists hard-sided maximums of 19 × 13 × 9 inches on American Mainline and 16 × 12 × 8 inches on American Eagle. A non-collapsible kennel cannot exceed the under-seat dimensions of any aircraft in the journey, so ask Reservations about every aircraft before choosing one.

American recommends soft-sided collapsible kennels and currently lists an 18 × 11 × 11 inch maximum. They must still fit under the seat without excessive collapse. They must be secure, padded, water-repellent, and have nylon mesh ventilation on at least three sides. These features do not guarantee acceptance; ask American to confirm the current limit, kennel, and fit for the exact itinerary.

IATA gives broad help on crates and live-animal trips, but it does not approve an American itinerary (IATA). First identify the travel category and get the airline's instructions. Then use our guides to dog crates for air travel and crash-tested dog crates to review features.

What changes for a service animal?

American defines a service animal as a dog trained to do work or tasks for a qualified person with a disability (American Airlines). It says service animals in training, emotional-support animals, and comfort animals may travel as pets instead of service animals. The pet requirements then apply (American Airlines). American still needs to confirm the exact itinerary.

For an American-operated flight, American recommends submitting the completed US DOT Service Animal Air Transportation Form electronically at least 48 hours before the flight. Its current page also permits presenting the completed form at the airport on the day of travel (American Airlines). If a partner airline operates a flight, American tells you to call that airline and use its forms. Read the live page, identify who operates each segment, and ask each operating airline to confirm its process.

When should you contact American Airlines Cargo?

If a pet is too large for the cabin, American points travelers to American Airlines Cargo (American Airlines). That referral does not mean cargo will accept the pet. It also does not confirm a route or date. Ask the cargo team whether it has a service for the pet and trip before making plans.

IATA's pet page provides broad help on crates and live-animal trips. It cannot confirm that American will take the pet (IATA).

Final pre-flight checklist

Reopen the official American Airlines pet page and verify the category for your animal.
Check the live destination list and footnoted itinerary restrictions.
If adding a carry-on pet online, still go to the American ticket counter at the airport to pay the applicable fee and have the pet and kennel checked.
Ask American to confirm the pet, route, destination, aircraft, carrier, and availability for every flight it handles.
For a service dog, check the live American service-animal page and choose between advance electronic submission and presenting the completed form at the airport under the current instructions.
Identify the operating airline for every segment. Contact any partner airline about the flight it runs.
Confirm current document requirements with American and the destination authority.
Keep the relevant airline and authority instructions available during the trip.

If two instructions seem to conflict, ask the party responsible for each one. Do not use a general article to choose between them.

Frequently asked questions

These answers tell you where to verify a claim. They do not confirm acceptance for an itinerary.

What is the 45 minute rule for American Airlines?

The official American pet and service-animal pages checked here do not establish a general "45 minute rule" for pets. Do not guess what that phrase means. Do not treat it as an American pet requirement. Read the live American pet instructions and ask American which timing instructions apply to your exact itinerary.

What paperwork do I need to bring my dog on a plane?

The checked sources do not provide one paperwork list for every dog and trip. Ask American what it requires for the dog, travel category, route, destination, and flights. Ask the destination authority what it requires. If a partner runs a segment, ask that airline about its process. Do not assume that TSA sets the pet-document rules. This source packet does not contain an official TSA source for such a claim.

How strict is American Airlines with pets?

American publishes rules for the travel category, carrier, route, and destination. For carry-on travel, the pet must be a cat or dog that meets its rules and stays in the carrier under the seat (American Airlines). Ask American to apply the live rules to each flight. A past trip or a general guide cannot approve a new itinerary.

Does American Airlines provide one document list for every pet trip?

No single list appears in the checked sources for all pets and itineraries. Ask American which documents it needs for the exact trip. Ask the destination authority separately, and check with the operating partner for any segment that it runs.

Before you book, compare expat pet insurance as a separate step. Read the plan terms. This does not mean that a plan covers a flight, a refusal, or a pet trip.

Written by the FG Team, the Furry Guardian editorial team, who keeps these border rules current.