Understanding the southwest airlines pet policy is the key to ensuring a safe and comfortable journey for your small pet. Southwest allows vaccinated cats and dogs to travel in the cabin in approved carriers that fit under the seat. Since only six carriers are allowed per flight, booking early is important. The standard pet fare is $95 each way, fully refundable if plans change. This guide explains carrier specifications, age rules, boarding expectations, seating limitations, and destination restrictions. With these guidelines, pet owners can prepare properly and enjoy a stress-free experience while keeping their furry friends close throughout the flight.