Does Southwest Airlines allow pets in the cabin?

Yes. Southwest Airlines allows small cats and dogs in the cabin for $125 one-way. Your pet must fit in an approved carrier under the seat.

How much does it cost to fly with a pet on Southwest Airlines?

In-cabin: $125 one-way. International routes may cost more.

What is the weight limit for pets on Southwest Airlines?

Southwest Airlines requires your pet to fit in an approved under-seat carrier.

Can I fly internationally with my pet on Southwest Airlines?

Pets are not permitted on international flights or any itinerary that includes an international flight..

How do I book a pet-friendly flight on Southwest Airlines?

Call Southwest Airlines directly or book through Camli. Add your pet during booking or call after. Book early — cabin pet spots are limited per flight.

Southwest Airlines Pet Policy (2026) — Fees, Cabin Rules & Restrictions

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Pet Policy Overview

Airline	Southwest Airlines
In-Cabin Fee	$125
Cargo Fee	N/A
Weight Limit	N/A
Carrier Dimensions	18.5x13.5x9.5 inches

Southwest Airlines Pet Policy FAQ

Does Southwest Airlines allow pets in the cabin?: Yes. Southwest Airlines allows small cats and dogs in the cabin for $125 one-way. Your pet must fit in an approved carrier under the seat.
How much does it cost to fly with a pet on Southwest Airlines?: In-cabin: $125 one-way. International routes may cost more.
What is the weight limit for pets on Southwest Airlines?: Southwest Airlines requires your pet to fit in an approved under-seat carrier.
Does Southwest Airlines have breed restrictions for pets?: Southwest Airlines allows small, vaccinated domestic cats and dogs to travel in the cabin. There are no specific breed restrictions mentioned, but the pet must be able to fit comfortably in a carrier under the seat.
Can I fly internationally with my pet on Southwest Airlines?: Pets are not permitted on international flights or any itinerary that includes an international flight..
How do I book a pet-friendly flight on Southwest Airlines?: Call Southwest Airlines directly or book through Camli. Add your pet during booking or call after. Book early — cabin pet spots are limited per flight.

Cabin Policy

Southwest Airlines allows small, vaccinated domestic cats and dogs to travel in the cabin on domestic flights. Pets must be at least eight weeks old to travel. Only one pet carrier is allowed per ticketed passenger, and each carrier can contain no more than two small cats or dogs of the same species. The pet must remain in the carrier for the duration of the flight. The pet carrier counts as either a carry-on item or a personal item. Customers can bring a pet carrier and a personal item, or a pet carrier and a regular-sized carry-on bag. Pets are not allowed to travel with unaccompanied minors. Reservations for pets must be made in advance by calling Southwest Airlines, as there is a limit of six pet carriers per flight.

Cargo Policy

Southwest Airlines does not offer cargo or checked baggage service for pets. All pets must travel in the cabin with their owner.

Breed Restrictions

Southwest Airlines allows small, vaccinated domestic cats and dogs to travel in the cabin. There are no specific breed restrictions mentioned, but the pet must be able to fit comfortably in a carrier under the seat.