United Airlines Pet Policy for Cats: Fees, Carrier Size, and Rules

United Airlines allows cats to fly in-cabin for a flat fee of $125 each way. Cats must be at least 2 months old for domestic flights and 4 months old for international flights. The cat must stay in an airline-approved carrier that fits under the seat — maximum dimensions are 18″ × 11″ × 11″ for soft-sided carriers or 17.5″ × 12″ × 7.5″ for hard-sided carriers. A health certificate from a veterinarian, issued within 28 days of travel, is required. United does not currently offer cargo or checked baggage options for pets.

United Airlines Cat Policy Overview

United Airlines allows cats to travel as carry-on, checked, and in-cabin pets. As a pet-friendly airline, they accommodate different cat breeds except for Persians, Himalayans, and other snub-nosed breeds due to the risks associated with their breathing. 

Concerning age restrictions, United Airlines only allows cats that are at least two months old on domestic flights and cats of four months old to travel on international flights. And cats must be in good health and have all their required vaccinations before they can fly on the plane.

In-Cabin Cat Policy: How Many Cats and Seat Rules

In-cabin pets are cats that travel with the passenger in an airline pet carrier under the seat. Though cats are allowed to fly in-cabin, their carrier must be able to fit under the seat. Like most other airlines, United Airlines allows a maximum of two pets to travel in premium cabins and up to four pets in economy cabins.

In that regard, be sure to confirm the availability of in-cabin pet space when making your flight reservation, as pets will be accepted in the cabin on a first-come, first-served basis. Also, note that United only accepts pets in the cabin. But currently, the airline does not allow cats and other pets to travel in the cargo hold. 

If you don’t plan on traveling with your pet on the flight, hire an air nanny. This pet professional accompanies your pet on the plane and provide care and supervision for your beloved kitty.

How Much Does United Airlines Charge for Cats?

United Airlines charges a fee for passengers who want to travel with a cat. The fee is a flat rate of $125 each way for cats traveling as a carry-on, checked, or in-cabin pet. You most pay the fee at the time of booking.

Cat Carrier Size Requirements on United Airlines

United Airlines has specific restrictions for traveling with a cat. For example, your cat must be flown in a pet crate which must not exceed the maximum size the airline allows. Maximum dimensions for hard-sided carriers are 12″ high, 17.5″ long, and 7.5″ wide. For soft-sided carriers, the maximum dimensions are 11″ high, 18″ long, and 11″ wide.

So, endeavor to get the right-sized airline pet carrier for your cat before boarding. Additionally, cats must stay in their crates for the duration of the flight. Sadly, they cannot sit on your lap.

Health Certificate and Document Requirements

When flying with a cat on United Airlines, passengers must provide a valid health certificate from a veterinarian. The health certificate — Certificate of Veterinary Inspection — must be issued within 28 days of the flight date and must include proof of the required vaccinations, such as rabies and distemper. Since the airline complies with the CDC’s pet travel regulations, they may demand additional documents depending on the cat’s origin and destination.

How to Prepare Your Cat for a United Airlines Flight

To have a stress-free travel experience with your cat, you’ll need to take some precautionary measures. Acclimate your cat to the pet crate before your flight date. Start by placing the cat carrier in a safe and comfortable environment in your home and allow your cat to explore it. You could also place familiar items like blankets, toys and treats inside the crate so your cat feels comfortable and relaxed.

Additionally, feed your kitty three to four hours before the flight. A full stomach can make them more anxious during the journey. Finally, ensure that your cat is wearing a collar with their ID tags for easy identification. Microchip your cat before traveling. Remember that the goal is to make your cat feel relaxed and comfortable throughout the flight.

How to Add a Cat to Your United Airlines Reservation

To add a cat to your reservation with pointer align-baseline”>United Airlines, you’ll need to act early, as in-cabin pet space is limited and offered on a first-come, first-served basis. The easiest way is to call United’s reservations line after booking your ticket, though in some cases you may be able to add a pet during the initial booking process online.

When requesting to add your cat, be prepared to provide details such as your pet’s age, breed, and carrier dimensions. United will confirm whether space is available on your specific flight and cabin class. Once approved, you’ll pay the $125 pet fee each way.

After confirmation, it’s important to review all requirements, including carrier size, documentation, and check-in procedures. On the day of travel, arrive early, as airline staff will verify your cat and carrier before allowing you through security. Planning ahead ensures a smooth and stress-free experience for both you and your pet.

United Airlines International Cat Travel Policy

Traveling internationally with a cat on United Airlines involves additional requirements beyond domestic flights. Cats must be at least 4 months old and meet both airline and destination country regulations. This often includes updated vaccinations, microchipping, and a valid health certificate issued within 28 days of travel.

In many cases, international destinations require an import permit, quarantine arrangements, or specific veterinary documentation endorsed by a government authority. Additionally, recent CDC regulations restrict entry into the United States from countries considered high-risk for rabies, which may impact return travel plans.

United only allows cats to travel in-cabin, so availability must be confirmed in advance. Flight selection is also important—direct routes are preferred to minimize stress and avoid complications during layovers. Pet owners should research destination-specific rules well in advance and coordinate closely with their veterinarian to ensure full compliance. Careful preparation is key to avoiding delays or denied entry.

Breeds Not Allowed on United Airlines

United Airlines restricts certain cat breeds from flying due to health and safety concerns. Specifically, snub-nosed (brachycephalic) breeds such as Persians and Himalayans are not accepted. These breeds are more prone to respiratory issues, which can be exacerbated by the stress and environmental changes associated with air travel.

Because of their shortened nasal passages, these cats may have difficulty breathing, especially in fluctuating temperatures or cabin pressure conditions. Even in-cabin travel, which is generally safer than cargo, can still pose risks for these breeds.

If you own a snub-nosed cat, it’s important to explore alternative transport options, such as ground pet transport or specialized pet travel services that can provide more controlled conditions.

How to Add a Cat to Your United Airlines Reservation

Adding a cat to your booking with United Airlines requires early planning due to limited in-cabin pet capacity. After purchasing your ticket, contact United’s customer service to request a pet reservation. You’ll need to confirm availability and provide basic details about your cat and carrier.

Once approved, pay the $125 fee and review all travel requirements. On departure day, arrive early to allow time for pet check-in and verification. Booking early and confirming details ahead of time will help ensure a smooth travel experience.

CDC Rules for International Cat Travel

The CDC has recently passed new laws concerning flying with pets. These new rules are intended to limit the exposure of rabies in the United States. Due to these new rules, airlines have decided to embargo pets from flying into the United States from countries or territories considered “high risk” for rabies or if the pet has been in a high-risk location within the past six months.

Alternatives to Flying Your Cat on United

United Airlines’ pet policy for cats is comprehensive. It covers all the important details that passengers need to know when traveling with a cat. It is pertinent to familiarize yourself with the United Airlines pet travel policy and make sure all the requirements are met before booking a flight. With some preparation, flying with your cat can be an enjoyable and hassle-free experience.

Frequently Asked Questions