Southwest Airlines Pet Policy (2025): Everything You Need to Know About Flying With Pets

Quick Summary—Southwest Airlines Pet Policy at a Glance

Before booking, pet owners should be aware that Southwest Airlines only permits small cats and dogs in the cabin. There’s no option for transporting pets in the cargo hold or as checked baggage, which makes planning ahead even more critical. Additionally, each flight can only accommodate a limited number of pets, so securing your spot early is essential.

If you’re considering flying with your pet, Southwest Airlines’ pet policy is designed to keep the experience smooth and hassle-free while ensuring compliance with airline regulations. Here’s a quick glance at the important details:

• Allowed pets: Small cats and dogs only
• Cabin travel only: No cargo or checked baggage option
• Pet fee: $125 each way per pet carrier
• Carrier size limit: 18.5” x 8.5” x 13.5”
• Booking requirement: Reservation required, limited availability
• Limit per flight: Maximum 6 pet carriers allowed per flight
• No international pet travel: Pets allowed only on domestic U.S. routes

What Is the Southwest Airlines Pet Policy in 2025?

Southwest Airlines has one of the most straightforward pet travel policies among U.S. carriers. The Southwest Airlines Pet Policy allows only small vaccinated cats and dogs in-cabin, provided they fit inside an airline-approved carrier.

This means:

• Pets must remain under the seat in front of you for the entire journey.
• The pet carrier counts as a personal item, allowing you one additional carry-on.
• Only 6 pet reservations are accepted per flight, so booking early is critical.

Compared to other airlines, the Southwest pet travel rules prioritize simplicity and safety by avoiding cargo travel risks.

How Much Are Southwest Airlines Pet Fees?

One of the most common questions travellers ask is, “How much does Southwest charge for pets?”

The Southwest Airlines pet fee is $125 each way per carrier.

• Round trip with one pet = $250 total.
• If you are travelling with two small pets, both can ride in a single carrier, but you’ll still pay just $125 per flight.

This puts Southwest in line with other major carriers:

• United Airlines: $125 each way
• Delta Airlines: $95–$125 each way
• Hawaiian Airlines: $35–$175 depending on route

So, while Southwest is not the cheapest, its consistent flat-rate fee makes it predictable for budget planning.

What Are the Southwest Airlines Pets in Cabin Rules?

Yes, Southwest Airlines pets in cabin are permitted. However, strict rules apply:

• Only cats and dogs are accepted.
• Your pet must stay inside its carrier at all times, including at the gate and onboard.
• Carriers must fit under the seat in front of you.
• Only one pet carrier per passenger is allowed, but carriers can contain two small pets of the same species.
• The maximum carrier dimensions are 18.5” x 13.5” x 8.5”.

Southwest sells its own branded pet carriers for $58, though passengers can use any airline-approved option.

Can Pets Fly in Cargo on Southwest Airlines?

No, unlike some carriers, Southwest Airlines does not allow pets in cargo or as checked baggage.

This has both advantages and disadvantages:

•  Safer for pets (avoids cargo stress and temperature risks).
•  Larger pets cannot fly on Southwest at all.

If you have a medium or large dog, you’ll need to consider other carriers like Delta or United, both of which offer cargo programmes.

Comparison: Southwest Airlines vs Competitor Pet Policies

Here’s how the Southwest Airlines pet policy compares with other U.S. airlines:

Clearly, Southwest Airlines’ pets-in-cabin-only policy is more restrictive compared to competitors but ensures safety and low stress for pets.

How to Book Pet Travel on Southwest Airlines?

Booking is simple, but space is very limited. Here’s the process:

1. Call Southwest Reservations at 1-800-I-FLY-SWA.
2. Request a “pet reservation” alongside your flight booking.
3. Pay the $125 Southwest Airlines pet fee upfront.
4. Arrive early on the day of travel to check in your pet at the airport counter.

Important: Pet reservations are first-come, first-served, and only 6 are accepted per flight.

What Restrictions Apply to Southwest Airlines’ Pet Policy?

While flexible, the Southwest pet travel rules have restrictions:

•  No international pet travel (including to Mexico, Central America, or the Caribbean).
• No emotional support animals (only trained service animals fly free).
•  No unaccompanied minors traveling with pets.
•  Pets must be at least 8 weeks old and fully vaccinated.

These restrictions align with U.S. Department of Transportation regulations and ensure both passenger and pet safety.

Final Thoughts: Is Southwest Airlines Pet Policy Good for Travellers?

The Southwest Airlines Pet Policy (2025) is clear, affordable, and designed for passenger convenience. It’s best suited for travellers with small cats and dogs who can ride comfortably in-cabin.

While the lack of cargo travel and international restrictions may be inconvenient for some, Southwest’s $125 flat fee, straightforward rules, and safety-first approach make it a top choice for domestic flyers.

FAQs About Southwest Airlines Pet Policy (2025)

Related Posts

• British Airways Pet Policy
• Air Canada Customer Service Refund
• Air Canada Customer Service