Discover Southwest Airlines Pet Policy is an excellent choice for pet owners who make domestic flight trips with small dogs and cats. Due to the pet-friendly policies of the cabin, pets can travel there in complete safety and comfort. Straightforward rules on carrier size and the requirements for immunizations in the policy make planning easy. The negative aspect is that no choices are available for the transportation of larger pets or freight, although the price charged for a pet is reasonable. Overall, it is a practical and reliable way to travel with a small pet.