How to Bring a Cat on a Plane

To bring a cat on a plane, book an in-cabin pet spot directly with the airline (usually by phone), place your cat in an airline-approved carrier that fits under the seat, arrive early, and remove your cat from the carrier for Transportation Security Administration (TSA) screening. Domestic in-cabin fees typically run $95–$200 each way, and international trips require a USDA-endorsed health certificate. Below is the full process, current airline rules, and the government sources behind each requirement.

Step-by-Step: How to Bring a Cat on a Plane

1. Confirm your cat qualifies for in-cabin travel. Most U.S. airlines only allow small cats in the cabin, with a combined pet-plus-carrier weight limit around 20 lbs (9 kg), according to American Airlines' published policy summarized by Chewy in 2026.
2. Book a pet spot by phone, not online. Delta, United, and American all cap the number of in-cabin pets per flight (commonly two in premium cabins, four in main cabin), so call reservations as soon as you book your own seat.
3. Buy an airline-compliant carrier. Soft-sided carriers must generally not exceed about 18" x 11" x 11" and must fit fully under the seat in front of you, per Delta's official pet travel page (delta.com, 2026) and the airline comparison compiled by Chewy.
4. Check the carrier against IATA's space standard. The International Air Transport Association (IATA) requires that a cat be able to stand, turn around normally, and lie in a natural position inside the container, per IATA's official traveling-with-pets guidance.
5. Get vaccination and health paperwork in order. For international travel, contact a USDA-accredited veterinarian for a USDA-endorsed health certificate; requirements vary by destination country, according to the United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS).
6. Acclimate your cat to the carrier before travel day. TSA recommends familiarizing pets with their carrier in the days before a flight to reduce stress at the checkpoint.
7. Arrive early and prepare for security screening. At the checkpoint, remove your cat from the carrier, place the empty carrier on the X-ray belt, and carry or leash-walk your cat through the metal detector — TSA states pets must never go through the X-ray tunnel itself.
8. Keep your cat in the carrier for the full flight. Airlines require the cat to stay fully inside the carrier, under the seat, for taxi, takeoff, landing, and cruise.

TSA Airport Security Rules for Cats

The Transportation Security Administration screens the pet and the carrier separately. Per TSA's official guidance, travelers should remove the cat from its carrier immediately before screening begins, place the empty carrier on the conveyor belt for X-ray, and then carry the cat through the walk-through metal detector or walk it through on a leash. TSA explicitly warns that pets must never be sent through the X-ray unit. If your cat is prone to bolting, TSA allows you to request a private screening room at no extra charge, where an officer screens the pet while it stays in the carrier.

Airline In-Cabin Cat Policies Compared (2026)

Fees, carrier limits, and age minimums differ by airline. Always confirm current terms directly with the airline before booking, since policies change without notice.

Note: Delta imposes no breed restrictions for cats. American Airlines restricts brachycephalic (short-nosed) breeds such as Persians from cargo transport, though this restriction does not apply to in-cabin travel per the same policy summary.

USDA APHIS and Health Certificate Requirements

The United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) sets the baseline federal standard for pet air travel. USDA regulations require dogs and cats to be at least 8 weeks old and fully weaned before flying. For international travel, USDA APHIS advises contacting a USDA-accredited veterinarian as soon as a trip is planned, since each destination country sets its own vaccination, testing, and paperwork requirements, and APHIS endorses the resulting health certificate when the destination requires it. Domestic flights within the U.S. generally do not require a USDA health certificate unless the airline requests one, so check with your specific carrier.

IATA's Role in Cat Carrier Standards

The International Air Transport Association (IATA) is the global trade body for airlines and publishes the Live Animals Regulations (LAR), the reference standard most carriers build their own pet policies around. IATA's official passenger guidance requires that animals be at least eight weeks old and fully weaned, and that the in-cabin container let the cat stand, turn around, and lie down in a natural position. A new edition of the IATA LAR took effect on January 1, 2026. IATA does not sell tickets or set individual airline fees — those come from each airline directly, so always verify with the airline you're booking.

Animal Passport vs. a Pet Travel Document — Don't Confuse the Two

Search results for pet travel sometimes surface "pet passport" schemes, such as the European Union's EU pet passport system for dogs, cats, and ferrets traveling between EU member states. That is an official government-recognized travel document tied to rabies vaccination and microchip records, issued by an authorized veterinarian in an EU country — it is unrelated to the product discussed below.

Animal Passport is a separate, distinct product: a digital livestock and animal identification tool that uses muzzle biometrics — a nose print unique to each animal, similar to a human fingerprint — captured through a phone camera. It binds an owner's record to breed, an estimated age from a dental photograph with a confidence score, and a body condition score (1–5) generated from a side-profile photo. It was used during livestock flood rescue efforts in Pakistan in August 2025, helping farmers reclaim animals after paper ear tags were washed away. Animal Passport is not a government-issued travel document, does not replace a USDA health certificate or an EU pet passport, and is not required or recognized by TSA, USDA APHIS, IATA, or any airline for flying with a cat. If you are flying with a pet cat, follow the airline, TSA, and USDA APHIS steps above. Read more on identification and animal record-keeping topics on the Animal Passport blog.

Common Mistakes That Delay Cat Travel

• Booking the flight before calling to reserve a pet spot. Airlines cap in-cabin pets per flight; spots can sell out even if your own seat is confirmed.
• Buying a carrier that doesn't fit under the specific aircraft's seat. Seat dimensions vary by aircraft type, not just by airline.
• Trying to carry the cat through the X-ray tunnel in its carrier. TSA requires the cat to be removed and screened separately from the carrier.
• Skipping the health certificate for international flights. Requirements vary by destination country and can take weeks to arrange through a USDA-accredited veterinarian.
• Assuming a digital pet ID product functions as an EU pet passport or USDA health certificate. Only the official government-issued documents described above are recognized for air travel.

Frequently Asked Questions

Can I bring my cat on a plane in the cabin?

Yes, most major U.S. airlines allow small cats in the cabin if they stay in an approved carrier under the seat for the whole flight, for a fee that typically ranges from $95 to $200 each way depending on the airline and route.

Does TSA make you take your cat out of the carrier?

Yes. TSA requires you to remove your cat from its carrier just before screening, place the empty carrier on the X-ray belt, and carry or leash-walk your cat through the metal detector — pets are never sent through the X-ray unit itself.

How old does a cat need to be to fly?

USDA APHIS requires cats to be at least 8 weeks old and fully weaned before air travel; some airlines set higher minimums for international flights, such as 16 weeks with Delta.

Do I need a health certificate to fly with my cat domestically?

Not always — many domestic U.S. flights don't require one unless the airline asks for it, but international flights generally require a USDA-endorsed health certificate from a USDA-accredited veterinarian, per USDA APHIS guidance.

What size carrier do airlines require for cats?

Most U.S. airlines cap soft-sided carriers around 18" x 11" x 11", and the carrier must fit completely under the seat in front of you; always confirm exact limits with your airline before flying.

Is a pet passport the same as Animal Passport's biometric ID?

No. An EU pet passport is an official government travel document for pets moving within the European Union. Animal Passport is a separate digital livestock identification product using muzzle biometrics; it is not a government travel document and is not used for airline check-in.

Can I book a pet seat online?

Usually not — Delta, United, and American all require you to call reservations directly to add an in-cabin pet, since flights have a hard cap on the number of pets allowed.

Are any cat breeds restricted from flying?

Restrictions vary by airline and mostly apply to cargo transport of brachycephalic (short-nosed) breeds like Persians; check your specific airline's current policy, since in-cabin rules can differ from cargo rules.