Pet-Friendly Airlines: Comparing Policies Before You Book

"Pet-friendly airline" isn't a single standard — policies differ enough between carriers that the airline you'd normally book isn't necessarily the best one for flying with a pet. For the actual booking steps, see our guide on booking flights with infants, kids, or pets; this one focuses on how airlines compare.

What actually varies between airlines

• In-cabin size and weight limits — airlines set their own limits for pet plus carrier combined, and they aren't identical; a pet that qualifies for in-cabin travel on one airline may not on another.
• Number of in-cabin pet spots per flight — airlines cap how many pets can fly in the cabin on a given flight, and this fills up, so booking early matters more with a pet than without one.
• Breed and health restrictions — many airlines restrict or ban certain brachycephalic (short-nosed) breeds from cargo transport due to health risks, and some extend restrictions to cabin travel as well; confirm your specific breed's status before booking.
• Cargo vs. cabin-only policies — some airlines only allow in-cabin pet travel for small pets and don't offer cargo transport at all; others handle larger pets or cargo shipments that a cabin-only airline simply can't accommodate.
• Fees — pet fees vary by airline and route and are charged separately from your own ticket; check the current fee for your specific airline rather than assuming a flat rate across carriers.

Documentation to have ready regardless of airline

• Up-to-date vaccination records, particularly rabies
• A health certificate issued by a vet within the window required for your trip, especially for international travel
• An airline-approved carrier that meets that specific airline's size and ventilation requirements — not just any pet carrier

International trips add another layer

International pet travel often involves the destination country's own import requirements — quarantine periods, additional vaccinations, or specific paperwork — on top of the airline's policy. Research the destination country's pet import rules separately from the airline's policy, since meeting one doesn't automatically satisfy the other.

How to choose the right airline for your pet

1. Confirm your pet and carrier combination meets the airline's specific in-cabin size limit, if traveling in-cabin.
2. Check whether cabin pet spots are still available for your specific flight — don't assume there's room.
3. If your pet doesn't qualify for cabin travel on your preferred airline, compare a different carrier's cargo or larger-pet policy rather than assuming no option exists.
4. Confirm any breed restrictions apply, or don't apply, to your specific pet before booking.

Frequently Asked Questions

Which airlines allow pets in the cabin?

Most major US airlines allow small pets in an approved carrier in the cabin for a fee, but exact size limits, cabin pet-spot caps, and fees vary by airline — confirm your specific airline's current policy before booking.

Are there breed restrictions for flying with pets?

Yes, many airlines restrict short-nosed (brachycephalic) breeds from cargo transport due to health risks, and some extend restrictions to cabin travel too. Confirm your specific breed's status with the airline before booking.

Do I need to book a separate ticket for my pet?

Usually yes — pet travel is booked and paid for separately from your own ticket, and cabin pet spots are limited per flight, so it should be arranged at the time you book, not added later.

What documents do I need to fly internationally with a pet?

Typically vaccination records and a vet-issued health certificate within a required time window, plus any additional requirements set by the destination country's own pet import rules — check both the airline's policy and the destination country's requirements separately.