JetBlue Pet Policy In Cabin: 2026 Guide to Fees, Carrier Size and Rules

JetBlue pet policy in cabin, in short: JetBlue Airways carries only small dogs and cats, and only in the cabin, never as cargo. The pet must stay in a leak-proof, ventilated carrier no larger than 17 x 12.5 x 8.5 inches that fits under the seat in front of you. The carrier counts as your personal item. Each flight allows at most six pets, pets cannot fly in Mint, and a per-flight pet fee applies. 2026 guides put that fee at $150 each way.

The JetBlue pet policy in cabin is the set of rules JetBlue Airways publishes for passengers who fly with a small dog or cat stowed under the seat. As of October 2026, those rules appear on two official JetBlue pages: the Traveling with Pets help page and the Contract of Carriage dated April 17, 2026. This guide is written by the Animal Passport editorial team. It quotes both pages and points out where they, and the third-party guides, disagree.

JetBlue in-cabin pet rules at a glance

Which pets can fly in the cabin on JetBlue?

JetBlue accepts small dogs and cats only. Its help page says plainly that no large dogs are accommodated on JetBlue. Section 12 of the JetBlue Airways Contract of Carriage (version dated April 17, 2026) adds that no animals are allowed as checked baggage and that no animals other than small dogs and cats may travel in the cabin. JetBlue has no cargo hold option, so a dog too big for an under-seat carrier cannot fly JetBlue at any price.

The help page also says JetBlue does not accept pet remains, cremated or otherwise, in the cabin or as cargo. The Contract of Carriage notes that search and rescue dogs may be permitted in certain cases, and that a fee may apply.

Is there a weight limit?

The sources disagree here. JetBlue's 2008 press release launching its JetPaws program said the pet and carrier together could not weigh more than 20 pounds, and some travel guides still repeat that limit. The JetBlue help page we reviewed in October 2026 publishes no weight limit. It sets only the carrier dimensions and requires that the pet stand up and turn around comfortably inside. Treat the 20-pound figure as a historical rule of thumb, not a published 2026 limit, and ask JetBlue if your pet is close to it.

JetBlue pet carrier size and requirements

According to JetBlue's Traveling with Pets page (2026), the carrier must meet all of these rules:

• No larger than 17 in long x 12.5 in wide x 8.5 in high (43.18 x 31.75 x 21.59 cm).
• FAA-approved, and small enough to fit comfortably under the seat in front of you.
• Leak-proof bottom and good ventilation.
• Soft-sided or hard-sided. Either type is accepted.
• Escape-proof. Containers that could allow an escape will be refused.
• One pet per carrier, with room to stand up and turn around when the carrier is closed.

Height is the measurement most owners get wrong. Pet Travel Advisors, a relocation firm that checked JetBlue's pages in September 2026, points out that JetBlue's 8.5-inch height is lower than the 11-inch soft-sided kennel Delta Air Lines recommends. A carrier bought for another airline may not fit. JetBlue sells carriers online and at the JFK Terminal 5 ticket counter for USD $55, while supplies last and by credit card only.

The pet and carrier count as your one personal item. JetBlue's general flight terms cap a personal item at 17 x 13 x 8 inches, but the pet page sets a separate limit for carriers (17 x 12.5 x 8.5 inches), and that pet-specific limit is the one to follow.

How much is the JetBlue pet fee?

Section 12 of JetBlue's Contract of Carriage (April 2026) says a fee applies to every in-cabin pet and must be paid when the reservation is made. The official pages we opened did not print the dollar amount, and the published figures differ:

• $150 each way, according to Pet Travel Advisors (checked September 2026) and other 2026 guides. That comes to $300 for a round trip.
• $125 per flight, the value JetBlue gave its Mosaic Pet Fee Waiver perk in its May 2023 TrueBlue press release. Some older guides still list $125.

The most recent reports point to $150 each way, but check the exact price in the Extras step of the JetBlue booking flow. A second pet, where JetBlue allows one, needs a second fee and a second seat. JetBlue's 2023 TrueBlue release also described a Mosaic perk that waives the pet fee on eligible JetBlue-operated flights.

How to book a pet on JetBlue: step by step

1. Measure your pet and carrier. Confirm the carrier is no larger than 17 x 12.5 x 8.5 inches and that your pet can stand and turn around inside it.
2. Book a JetBlue-operated flight in the main cabin. Pets are not allowed in Mint. JetBlue's Contract of Carriage says codeshare and interline partners may apply their own pet rules.
3. Add the pet early. Only six pets can fly on each flight, and the Contract of Carriage requires the fee to be paid at booking.
4. Choose an allowed seat. You cannot sit in an emergency exit row, a bulkhead seat, a Mint seat or any seat without under-seat stowage. JetBlue recommends a window or aisle seat.
5. Gather documents. Requirements vary by U.S. state. Puerto Rico and the U.S. Virgin Islands require vaccination documents for pets, according to JetBlue's 2026 help page.
6. Check in and get the tag. Once the pet is confirmed, you can check in 24 hours before departure online, in the app or at a kiosk. At the airport, pick up the JetPaws bag tag at the full-service counter.
7. Clear security. The Transportation Security Administration (TSA) will ask you to carry your pet through screening while the empty carrier is inspected. JetBlue says your animal will never go through the X-ray machine.

Rules at the airport and on board

JetBlue requires pets to stay inside the zipped carrier throughout the airport and the flight. You may unzip it briefly to feed or help your pet. The carrier goes under the seat in front of you for taxi, takeoff and landing. During cruise you may hold the carrier on your lap. If you bought an extra seat, you may put the carrier on that seat, but the pet still stays inside.

JetBlue says pet relief areas vary by airport, and you may need to leave and re-clear security if your pet needs one. Pet strollers count as carry-on items and must meet carry-on size limits. A stroller used by a service dog counts as an assistive device instead.

Can you fly internationally with a pet on JetBlue?

JetBlue accepts pets on all its domestic flights. International routes are more restricted. Section 34 of the Contract of Carriage (April 2026) says:

• JetBlue does not carry live animals or pets to Barbados or Trinidad and Tobago, because of strict local government requirements.
• JetBlue does not carry pets to or from the United Kingdom and the European Union. Service animals are carried there where the law requires it.
• Passengers must meet the destination country's laws, including valid health and rabies vaccination certificates where required.

The airline places responsibility for import paperwork on the traveler. For trips leaving the United States, the United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) tells owners to contact a USDA-accredited veterinarian as soon as they decide to travel. That veterinarian helps determine the destination's requirements and sends the health certificate to APHIS for endorsement. The APHIS export page (last modified August 14, 2026) says destination requirements can change at any time and should be checked before every trip.

For dogs entering or returning to the U.S., the U.S. Centers for Disease Control and Prevention (CDC) sets the rabies rules. The requirements depend on whether the dog has been in a high-risk country for dog rabies in the past six months and on where it was vaccinated. APHIS notes that a dog leaving for a high-risk country must have the Certification of U.S.-Issued Rabies Vaccination completed before departure, because it cannot be issued after the fact.

Service animals and emotional support animals on JetBlue

Service animals follow different rules from pets. The U.S. Department of Transportation (DOT) final rule published in the Federal Register on December 10, 2020, defines a service animal as a dog individually trained to work or perform tasks for a person with a disability. The rule lets airlines treat emotional support animals as pets.

Under JetBlue's 2026 Contract of Carriage, service animals fly at no charge, with a limit of two per qualified passenger. They must be harnessed, leashed or tethered and must fit in the passenger's foot space without occupying a seat. If you booked more than 48 hours before departure, JetBlue requires the DOT Service Animal Air Transportation Form at least 48 hours in advance. JetBlue does not transport animals in training. An emotional support cat or dog must therefore follow the in-cabin pet rules above, including the carrier, the fee and the six-pet cap.

JetBlue pet travel documents vs Animal Passport: not the same thing

People searching for pet travel rules often come across the term animal passport, so the distinction matters. The documents an airline or border authority accepts come from official schemes: a USDA APHIS-endorsed health certificate, a CDC rabies vaccination certification, or, in Europe, the EU pet passport. JetBlue does not fly pets to or from the EU at all.

Animal Passport is a different kind of product. It is a digital animal and livestock identity record built on muzzle biometrics, because an animal's nose print is unique, like a fingerprint. A farmer captures it with a phone, and the record links the animal to its owner, breed, estimated age (taken from a dental photograph, with a confidence score), a 1–5 body condition score from a side-profile photo, and its vaccination history. In August 2025 it was used during livestock flood rescue in Pakistan, so farmers could reclaim animals after their paper tags washed away.

Animal Passport is not a government-issued travel document. It is not accepted by JetBlue in place of any required health certificate, and it is not veterinary or legal advice. For a flight, follow JetBlue, USDA APHIS and CDC. For permanent biometric identification of livestock, read more on the Animal Passport blog.

Where the sources disagree

Always rely on the version you see at the time of booking. JetBlue's own help page tells travelers that destination-specific requirements do not override JetBlue's policies, and its policies change.

• Fee amount: $150 each way in 2026 third-party reports, and $125 per flight in JetBlue's 2023 TrueBlue release.
• Pets per traveler: up to two on the JetBlue help page, but one per flight in the April 2026 Contract of Carriage.
• Weight: 20 pounds in JetBlue's 2008 release and in some guides, but no published weight limit on the current help page.

If the help page and the Contract of Carriage conflict, get JetBlue's answer in writing (a chat transcript or booking confirmation) before you travel.