Southwest Airlines Pet Policy (2026) — Fees, Cabin Rules & Restrictions
Pet Policy Overview
| Airline | Southwest Airlines |
|---|---|
| In-Cabin Fee | 25 |
| Cargo Fee | N/A |
| Weight Limit | N/A |
| Carrier Dimensions | 18.5x13.5x9.5 inches |
Frequently Asked Questions
- Southwest Airlines allows small pets in the cabin for 25 one-way.
- No cargo pet transport option is currently available.
- Approved carrier dimensions: 18.5x13.5x9.5 inches maximum.
- Best for: Budget domestic pet travel
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.