An exclusive carrier made specifically for carrying pets on Southwest Airlines is known as a Southwest pet carrier. Southwest Airlines has certain pet carrier regulations that must be followed while using this carrier to transport pets as checked baggage or in the cabin. The size of the pet and the route of transportation will determine the kind and size of Southwest pet carriers. In general, while traveling in a cabin, the carrier must fit under the seat in front of the passenger, be leak-proof, and be well-ventilated. To guarantee a safe and enjoyable trip for pets, it's critical to adhere to the instructions given by Southwest Airlines.