Airline Pet Policies: Cabin, Cargo, and Entry Rules

Airline pet policies have two separate gates. The airline decides whether a pet may travel in the cabin, and some airlines allow no cabin pets (FAA). If accepted, the pet must meet the airline's eligibility and container rules plus the FAA under-seat stowage baseline (FAA). Country-specific rules separately govern entry, so carrier acceptance does not grant border permission (IATA). For dogs entering the United States, carrier pages also surface CDC requirements (Delta, verified 2026-08-25; American, verified 2026-08-25).

Our verdict: treat airline pages as the booking gate and government pages as the entry gate; never book from a third-party "most pet-friendly" list alone.

Before paying, confirm flight acceptance, airline eligibility, container fit, and destination and return-entry documents (FAA; IATA; American, verified 2026-08-25; Delta, verified 2026-08-25).

Flying Southwest? Use the Southwest pet policy airport-to-cabin checklist, then confirm the live policy with Southwest.

Flying American? Use the American Airlines pet policy pre-flight checklist, then confirm the exact itinerary with American.

Flying Delta? Use the Delta pet policy cabin checklist, then confirm the exact itinerary with Delta.

What does the FAA actually decide about pets in the cabin?

The FAA does not set one pet-acceptance policy or one weight cutoff. It allows each airline to decide whether pets may travel in the passenger cabin, so the FAA tells travelers to contact the airline for its policy (FAA). Some airlines do not allow pets in the cabin at all (FAA).

The FAA does set the cabin-stowage baseline when a carrier accepts a pet. Under the rule described by the FAA, the container counts as carry-on baggage and must be small enough to fit under the seat without blocking a path to the main aisle (FAA). It must be stowed before the last passenger entry door closes and remain properly stowed while the aircraft moves on the surface and during takeoff and landing; passengers must also follow flight attendant instructions (FAA).

An airline may add conditions. The FAA says these may include allowed pet types, the number of cabin pets or pets per passenger, a requirement that the pet be harmless, inoffensive, and odorless, confinement in the container for the whole flight, and a recently issued health certificate (FAA). These are possible airline conditions, not a claim that every airline uses every condition.

Service animals follow a separate path because the FAA says service animals are not pets (FAA). The FAA says DOT rules require U.S. airlines to allow service animals in the cabin and that there is no limit on the number of service animals on a flight (FAA). Use the carrier's service-animal page rather than its ordinary pet page.

Cabin vs checked vs cargo: who sets which rule?

These labels do not create one shared rulebook. Start by identifying which source makes each decision:

• Cabin acceptance: The airline decides whether it accepts pets in the passenger cabin and may impose its own limits (FAA).
• Cabin stowage: The accepted pet's container is carry-on baggage and must meet the FAA under-seat and aisle-path conditions described above (FAA).
• Animal space inside the container: IATA says the container must let the animal turn normally while standing, stand and sit erect, and lie in a natural position; it publishes Container Requirements 1 for cats and dogs (IATA).
• Checked or hold transport: IATA says some airlines that do not allow cabin pets transport them as special baggage in a heated and ventilated hold, so acceptance still has to be confirmed with the airline (IATA).
• Country entry: IATA tells passengers to check country-specific pet-shipping regulations and does not act as the destination import authority (IATA).

Do not assume that “checked” is open to every traveler. American states that ticket-counter checked pets are limited to active-duty U.S. Military and U.S. State Department Foreign Service personnel traveling on official orders, with fees and restrictions applying (American, verified 2026-08-25). For another airline or route, read that carrier's own wording before booking.

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What do major U.S. carriers publish right now?

This table is a source map, not a “most pet-friendly” ranking. Carrier information was verified on 2026-08-25.

The useful comparison is not a single winner. It is whether the carrier accepts your animal on your flight, whether the animal and container meet that carrier's conditions, and whether the route's entry documents are in order (FAA; IATA).

Can a 50–70 lb dog fly in the cabin or buy a seat?

The approved sources do not establish a universal 50-pound or 70-pound cabin rule, and the FAA does not set one airline-wide weight cutoff. The FAA gives cabin acceptance to the airline and requires an accepted pet container to fit beneath the seat without blocking a path to the main aisle (FAA). IATA's passenger guidance says only small dogs and cats can go in the cabin and requires enough container room for normal standing, sitting, turning, and lying (IATA).

The sources in this guide also do not establish that buying a passenger seat changes the ordinary pet rules. Do not treat a second ticket as permission. Ask the chosen airline whether the dog is eligible under its current cabin policy for that flight, then apply the carrier's answer and the FAA stowage baseline (FAA). For a focused decision guide, see how to fly with a large dog in the cabin.

Which international and U.S.-entry dog rules do travelers mix up?

Airline acceptance and border entry are different decisions: IATA tells passengers to confirm animal acceptance with the airline for the preferred day and flight and separately check country-specific regulations for shipping pets (IATA). If Portugal is your destination, our moving to Portugal with a dog guide separates the EU-origin, non-EU and U.S.-origin entry paths.

For dogs arriving in the United States, American states that the CDC has requirements for bringing dogs into the United States (American, verified 2026-08-25). Use the CDC link surfaced by American for the details rather than relying on a carrier summary.

Delta states that all dogs traveling to the United States must appear healthy, be microchipped, and be at least six months old, and that every dog must travel with a receipt for a completed CDC Dog Import Form (Delta, verified 2026-08-25). Delta also says requirements depend on the countries the dog has been in during the six months before arrival and whether they are high risk for dog rabies, and that further documentation may be required (Delta, verified 2026-08-25).

For a trip outside the contiguous United States, Delta requires the documents needed for entry at the destination and return, as well as its age, health, size, and kennel requirements (Delta, verified 2026-08-25). Use our USDA pet travel navigator to choose the official domestic, export, or import starting page. Then read our international health certificate guide for dogs leaving the USA for the separate document path.

IATA also advises against transporting snub-nose dogs such as boxers, pugs, bulldogs, and Pekinese during hot seasons because they have difficulty maintaining normal body temperature (IATA). This is IATA transport guidance, not a statement that every airline applies the same acceptance rule.

What belongs on a pre-booking checklist?

• Open the airline's official pet page. The FAA says to contact the airline for its specific policy because the airline decides cabin acceptance (FAA).
• Confirm the exact day and flight. IATA says to confirm acceptance for the preferred day and flight because some airlines restrict the number of animals aboard (IATA).
• Match the pet to the published eligibility rules. Airlines may limit pet types and pet numbers, and may impose other conditions described by the FAA (FAA).
• Check both container tests. Confirm the IATA space conditions and the FAA under-seat, aisle-path, and stowage conditions (IATA; FAA).
• Identify cabin, checked, or hold acceptance in the carrier's own terms. IATA says some airlines do not allow cabin pets and instead transport them as special baggage in a heated and ventilated hold (IATA).
• Read country entry rules for the destination and return. IATA directs travelers to country-specific regulations, and U.S.-entry dog requirements are surfaced by American and Delta (IATA; American, verified 2026-08-25; Delta, verified 2026-08-25).
• Keep service-animal rules separate. The FAA states that service animals are not pets, while American and Delta publish separate service-animal paths (FAA; American, verified 2026-08-25; Delta, verified 2026-08-25).

Browse the Furry Guardian guides for other route and document decisions.

What are common airline pet policy questions?

What airline will allow pets to fly?

There is no universal answer in the approved sources. The FAA lets each airline decide whether pets may travel in the cabin and notes that some airlines allow no cabin pets (FAA). IATA says to contact the airline to confirm acceptance for the preferred day and flight because animal numbers may be restricted (IATA).

Can you bring a 70 lb dog on a plane?

The FAA does not set a universal weight cutoff; the airline decides cabin acceptance, and an accepted cabin container must fit beneath the seat without blocking the aisle path (FAA). IATA says only small dogs and cats can travel in the cabin under its passenger guidance (IATA). Ask the airline about the transport paths it offers for the exact flight.

Can I buy my 50 lb dog a seat on a plane?

The approved sources do not say that purchasing a seat overrides ordinary pet rules. The FAA says the airline decides cabin acceptance and that an accepted cabin pet's container is carry-on baggage that must fit beneath the seat without blocking the aisle path (FAA). Verify the carrier's current rule before buying any ticket.

Can I bring my pet and a carry-on?

The FAA classifies a cabin pet container as carry-on baggage under the rule described on its pet page (FAA). The approved sources do not state a universal allowance for another carry-on, so check the selected airline's baggage and pet policies for the flight.

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

There is no universal document list in the approved sources. The FAA says an airline may require a recently issued health certificate, while IATA says most airlines require a veterinarian-issued health certificate stating that the animal is healthy and fit to fly (FAA; IATA). IATA separately directs travelers to check country-specific pet regulations (IATA). Ask the airline what it requires for the exact flight, then check the destination and return-entry authorities because carrier acceptance does not grant border permission (FAA; IATA).

Can my dog sit with me on an airplane?

The approved sources do not provide a universal rule allowing a pet to sit with a passenger. For an accepted cabin pet, the FAA says the container counts as carry-on baggage, must fit under the seat without blocking a path to the main aisle, and must be stowed during surface movement, takeoff, and landing (FAA). The FAA also says an airline may require the pet to remain in the container for the entire flight, so check the airline's current rule for your flight (FAA).

What if my dog needs to pee on the flight?

The approved sources do not give one onboard pet-relief procedure. IATA advises walking a dog before leaving for the airport and again before check-in (IATA). Because the FAA says an airline may require a pet to stay in its container for the entire flight and passengers must follow flight attendant instructions, ask the airline about its onboard rules before travel rather than assuming the dog may leave the container (FAA).

What if my dog barks on the plane?

The approved sources do not provide a universal barking procedure, so this guide will not invent one. The FAA says an airline may require a cabin pet to be harmless and inoffensive and may require the pet to remain in its container for the entire flight; passengers must follow flight attendant instructions (FAA). Ask the airline for its current onboard procedure.

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