United Airlines and Pets: What the 2026 Cabin-Only Pet Policy Means for You

The United Airlines pet policy is the set of rules that decides which animals can fly with you on United, where they ride and what it costs. As of October 2026, United Airlines and pets come down to one model: cats and dogs only, in the cabin, inside a carrier that fits under the seat in front of you, for a reported $150 each way. United does not sell cargo pet transport to ordinary travelers, so large dogs cannot fly United.

This guide is published by Animal Passport and was last updated on 7 October 2026. It draws on United Airlines' own newsroom, the U.S. Department of Transportation (DOT) regulations in the Electronic Code of Federal Regulations (eCFR), the Centers for Disease Control and Prevention (CDC), the United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS), and independent 2026 policy guides. Airline pet rules change often, so treat every figure below as a starting point and confirm it on united.com before you pay.

United Airlines pet policy at a glance (as of October 2026)

The table below summarizes the rules most travelers ask about. Where independent sources disagree, the disagreement is flagged in the sections that follow.

Which animals can fly on United Airlines?

United accepts only cats and dogs as in-cabin pets, according to 2026 guides from Spinning Jack and Canine Cab Company. CBS News reported the same “dogs, cats” limit in its April 2024 roundup of U.S. airline pet policies. Rabbits, birds and other small animals that some carriers accept are not eligible on United.

The animal must stay inside a closed carrier, stowed under the seat in front of you, for the whole flight. It cannot ride on your lap or on a seat. There is no published weight limit: the practical limit is that the pet must fit comfortably in a compliant carrier, which rules out most medium and large dogs.

Minimum age

Sources disagree on the exact ages. Spinning Jack (August 2026) reports 2 months for domestic flights, and 4 months for cats and 6 months for dogs on international flights. Canine Cab Company (2026) lists 8 weeks domestic and 16 weeks international. For dogs entering or returning to the United States, the CDC sets its own floor of 6 months of age (CDC, 2024), so an international dog trip effectively requires a dog that is at least 6 months old on return.

Snub-nosed (brachycephalic) breeds

Flat-faced breeds such as bulldogs, pugs and Persian cats face higher breathing risks in flight. Canine Cab Company reports that these breeds can still fly in the cabin on United if they fit the carrier limits, while Spinning Jack advises confirming acceptance directly with United before booking. If you own a snub-nosed breed, ask your veterinarian whether flying is appropriate at all.

How much does United charge to fly with a pet?

United's in-cabin pet fee is reported as $150 each way per pet in 2026, according to Spinning Jack (August 2026) and Canine Cab Company (2026). A round trip with one pet therefore costs $300 in pet fees on top of your ticket.

The fee has changed recently, which explains why older articles show a lower number. CBS News listed United's pet fee as $125 in April 2024, and Spinning Jack reports the increase to $150 took effect on April 26, 2024. Even the same 2026 guide can contradict itself: Canine Cab Company's summary box quotes $125 while its body text and table say $150. Treat $150 as the current figure and confirm the total shown at booking.

• Per pet, per direction: two pets in two carriers means paying twice in each direction (Spinning Jack, 2026).
• Paid at the counter: Spinning Jack reports the fee is collected at airport check-in, which means seeing an agent rather than using a kiosk.
• Long layovers: a connection over 4 hours domestic or 24 hours international adds $125 per stop (Spinning Jack, 2026).
• Hidden costs: a compliant carrier, a veterinary health certificate and, for international trips, a USDA endorsement add to the total.

What size pet carrier does United allow?

United's published maximums, as reported by Spinning Jack and Canine Cab Company in 2026, are 17.5 x 12 x 9 inches for a hard-sided carrier and 18 x 11 x 11 inches for a soft-sided carrier. The carrier must fit fully under the seat in front of you, and your pet must be able to stand up, turn around and lie down inside it.

Soft-sided carriers are the common choice because they flex into under-seat spaces that vary between aircraft types. The carrier also counts as your carry-on bag, according to Spinning Jack, so plan to travel with a personal item only. Seats without under-seat floor space, such as bulkhead and exit rows, are not available to passengers with pets.

Can dogs fly in cargo on United Airlines?

Not if you are an ordinary civilian traveler. United suspended new reservations for PetSafe, its program for pets in the cargo hold, on March 20, 2018, after a series of high-profile incidents, ABC News reported that day. In a May 1, 2018 press release, United said it was working with American Humane and expected PetSafe to resume “later this summer”.

Independent 2026 guides report that the program never reopened to the general public. Canine Cab Company (2026) states that United cargo pet transport is now limited to active-duty U.S. military personnel on Permanent Change of Station (PCS) orders and U.S. State Department employees on official orders. For everyone else, a dog that does not fit an under-seat carrier cannot fly United. The realistic alternatives are a professional pet shipper that follows the International Air Transport Association (IATA) Live Animals Regulations on another carrier, or ground transport.

Where can't you take a pet on United?

Some destinations do not accept in-cabin pets because of strict rabies controls or quarantine. The lists published in 2026 overlap but do not match exactly:

• Spinning Jack (August 2026): the United Kingdom, Australia, Hawaii, Guam and the United Arab Emirates.
• Canine Cab Company (2026): Hawaii, Australia, New Zealand, the United Kingdom and Ireland.

Because the lists differ, check United's own restricted-destination list and the destination government's import rules before booking. The destination country's requirements often take longer to satisfy than the airline's.

How to add a pet to a United reservation

In-cabin pet spaces are limited per flight and allocated first come, first served. The steps below reflect the process described by Spinning Jack (August 2026) and Canine Cab Company (2026).

1. Check the destination first. Confirm the route is not on a restricted list and that you can meet the destination's import rules.
2. Book your own ticket, then add the pet. Select the pet option during booking on united.com or add it later through My Trips; Canine Cab Company recommends calling United reservations if the website will not let you add a pet.
3. Add the pet early. United caps pets per cabin, so popular flights fill up.
4. Choose a seat with under-seat storage. Avoid bulkhead and exit rows.
5. Arrange paperwork. Get a health certificate from a USDA-accredited veterinarian if your route or destination requires one.
6. Check in at the counter. Pay the fee and collect the carrier tag; arrive at least 2 hours early for domestic flights.

Service animals and emotional support animals on United

Service animals are not pets under U.S. law, and the pet fee and carrier rules do not apply to them. The DOT's Air Carrier Access Act rules in 14 CFR Part 382, amended in December 2020, require airlines to accept a trained service animal accompanying a passenger with a disability, and bar refusal based on breed.

Under those rules, as published in the eCFR:

• An airline may ask only two questions: whether the animal is required because of a disability, and what work or task it is trained to perform (14 CFR 382.73).
• An airline is not required to accept more than two service animals per passenger (14 CFR 382.74).
• An airline may require the U.S. Department of Transportation Service Animal Air Transportation Form, and, for flight segments of 8 hours or more, a DOT Service Animal Relief Attestation Form (14 CFR 382.75).
• If you booked more than 48 hours before departure, the airline may ask for the form up to 48 hours in advance (14 CFR 382.75).
• An animal that behaves disruptively, for example by biting, jumping on people or relieving itself in the cabin, need not be treated as a service animal (14 CFR 382.73 and 382.79).

Emotional support animals no longer qualify as service animals. Spinning Jack (2026) reports that United now carries them as ordinary pets, with the standard fee and carrier rules.

Health certificates, vaccines and CDC rules for international trips

For international travel, the airline rules are only half the job. USDA APHIS advises owners taking a pet abroad to contact a USDA-accredited veterinarian “as soon as you decide to travel”, because that veterinarian helps determine destination entry requirements and obtain a USDA-endorsed pet health certificate (USDA APHIS, page updated March 2026).

Dogs coming back into the United States must also meet CDC rules. Since August 1, 2024, a dog that has been only in dog rabies-free or low-risk countries in the previous 6 months needs a CDC Dog Import Form receipt, must be at least 6 months old, must have a microchip readable by a universal scanner, and must appear healthy on arrival (CDC, 2024). The form is free and each dog needs its own. Dogs that have been in a high-risk rabies country face stricter requirements, and USDA APHIS notes that U.S.-vaccinated dogs in that situation need a Certification of U.S.-Issued Rabies Vaccination completed by a USDA-accredited veterinarian before departure.

Start with the destination country, not the airline. Some entry requirements, such as rabies titer tests and waiting periods, take months.

United pet travel documents vs Animal Passport: what's the difference?

Search results for “pet passport” mix several very different things, so it is worth being precise. Animal Passport is a digital animal and livestock identity record built on muzzle biometrics: the nose print of a cow, buffalo or other animal is unique like a human fingerprint and can be captured on a phone. It is not an airline pet ticket, a USDA health certificate, a CDC import form or an EU pet passport.

Where Animal Passport matters is proving who owns an animal when paper tags fail. In the August 2025 floods in Pakistan, muzzle-print records were used in livestock rescue so farmers could reclaim animals after paper ear tags washed away. That is a very different job from getting a dog through a United gate. For flying, use the official airline, CDC and USDA documents described above. You can read more about animal identity and travel rules on the Animal Passport blog.

Where the sources disagree

United's own pet pages could not be retrieved directly when this guide was compiled, so the airline-specific figures above come from 2026 independent guides cross-checked against each other and against United's newsroom. Those guides agree on the core rules (cats and dogs only, cabin only, $150 fee, carrier dimensions, no civilian cargo) but differ on minimum ages, the number of pets allowed per passenger and the restricted-destination list. Spinning Jack reports up to two pets per passenger, each in its own carrier with a purchased adjacent seat, while Canine Cab Company lists one pet per passenger with a second allowed only by buying an adjacent seat. On any of these points, United's live policy page and its reservations agents are the final word.