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Southwest Airlines Pet Policy

Author : Flycohub Flycohub | Published On : 18 Mar 2026

Southwest Airlines Pet Policy Everything You Need to Know Before Flying with Your Furry Friend

Traveling with pets has become increasingly common, and airlines are adapting to accommodate pet parents. If you’re planning to fly with your furry companion, understanding the pet policy of Southwest Airlines is essential. This guide walks you through everything — from fees and carrier requirements to restrictions — so you can plan a smooth journey.

Overview of Southwest Airlines Pet Policy

Southwest Airlines allows small vaccinated domestic cats and dogs to travel in the cabin with their owners on domestic flights. Unlike some airlines, Southwest does not permit pets to travel in the cargo hold. This makes it a safer and more comfortable option for pet owners who prefer to keep their animals close.

However, there are specific rules and limitations you must follow. The airline maintains strict guidelines to ensure the safety and comfort of all passengers — both human and animal.

Cabin Travel Rules for Pets

Pets are only allowed in the cabin under certain conditions. First, your pet must remain inside an approved carrier at all times during the flight. The carrier must fit under the seat in front of you, just like a personal item.

Each passenger is allowed to bring only one pet carrier, and the carrier can hold up to two pets of the same species (provided they are small enough to fit comfortably). Keep in mind that the pet counts as either your personal item or carry-on, meaning your luggage allowance may be affected.

Additionally, there is a limit to how many pet carriers are allowed per flight, so it’s wise to book early if you plan to travel with your pet.

Pet Fees and Costs

Traveling with your pet on Southwest Airlines is not free. As of recent policy standards, the airline charges a pet fare per carrier each way. This fee is non-refundable and must be paid at the airport ticket counter.

While the cost is relatively affordable compared to other airlines, it’s still important to factor this into your travel budget. Also, since reservations for pets cannot be made online, you’ll need to confirm availability by contacting the airline directly.

Approved Pet Carrier Requirements

Your pet’s carrier plays a crucial role in ensuring a smooth travel experience. Southwest has specific size and design requirements for carriers:

  • The carrier must be well-ventilated.
  • It should be leak-proof and secure.
  • Maximum dimensions should fit under the seat (generally around 18.5” x 8.5” x 13.5”).
  • Both soft-sided and hard-sided carriers are accepted, though soft-sided ones are recommended for flexibility.

The pet must be able to stand up and move around comfortably inside the carrier. If the airline staff determines that your pet is too large or uncomfortable, boarding may be denied.

Health and Vaccination Requirements

Unlike international travel, Southwest Airlines does not always require a health certificate for pets on domestic flights. However, your pet must be vaccinated appropriately and in good health.

It’s always a good idea to carry vaccination records and consult your veterinarian before traveling. Some states may have additional requirements, so checking local regulations is highly recommended.

Restrictions and Limitations

There are a few important restrictions to keep in mind. First, pets are not allowed on international flights or routes to/from Hawaii. They are also prohibited on flights with unaccompanied minors.

Additionally, certain types of animals are not permitted. Only cats and dogs qualify under the pet policy — no exotic animals, birds, or rodents are allowed.

If your pet shows aggressive behavior or appears ill, airline staff may refuse boarding for safety reasons.

Service Animals vs Pets

It’s important to distinguish between pets and service animals. Service animals are treated differently under airline policies and are generally allowed to accompany passengers without additional fees.

Southwest Airlines complies with federal regulations regarding trained service dogs. Emotional support animals, however, are no longer classified the same way and must follow standard pet policies, including fees and carrier requirements.

Tips for a Smooth Journey with Your Pet

Traveling with a pet can be stressful, but preparation makes all the difference. Here are a few helpful tips:

  • Book early: Pet spots are limited per flight.
  • Get your pet comfortable: Let them get used to the carrier before travel day.
  • Avoid feeding right before the flight: This helps prevent motion sickness.
  • Arrive early: Allow extra time for check-in and documentation.
  • Stay calm: Pets often mirror your emotions, so a relaxed attitude helps.

Final Thoughts

Flying with your pet on Southwest Airlines can be a convenient and safe experience if you follow the guidelines. The airline’s pet-friendly approach, combined with its straightforward rules, makes it a popular choice among travelers with small pets.

By understanding the policy in advance and preparing accordingly, you can ensure a stress-free journey for both you and your furry companion. Whether it’s a quick domestic trip or a longer adventure, your pet can travel comfortably right by your side.