We allow one pet carrier per ticketed Customer in accordance with our pet policy. Each pet carrier can contain no more than two of the same species of small cat or dog.  

Your pet carrier must be able to fit under the seat in front of you. The cat or dog (including head and tail) must be completely inside the pet carrier and be able to stand up and move around the carrier with ease.  

Acceptable pet carriers must be:  

• Specifically designed as pet carriers.

• Leak-proof and well ventilated. 

• Within the following dimensions: 

• Southwest Airlines Pet Carrier - dimensions: 15" (L) x 10" (W) x 10" (H). 

• Other pet carriers with maximum dimensions of 18” (L) x 10.5” (W) x 10” (H). 

We recommend using a soft-sided carrier, as under-seat space can vary depending on your seat type and location on the aircraft. Space for pet carriers may be more limited in certain seat types, including aisle seats.

Pet carriers are considered either a personal item or a carryon item. You may board the aircraft with either a pet carrier and a personal item or a pet carrier and a regular size carryon bag. 

Pets must be secured in a pet carrier at all times while in the gate area, during boarding/deplaning, and for the entire flight. If you don't follow this requirement, your pet may be denied transportation. Carriers must be stowed under the seat in front of you while onboard.