Flying with pets is easier than ever but only if you understand airline’s rules before booking.
If Southwest is your next carrier, you’re in the right place. This detailed guide breaks down the Southwest Airlines pet travel policy for 2025 so you can board confidently with your dog or cat.
You’ll learn how to add a pet to a Southwest flight, what the Southwest pet carrier dimensions are, how much the Southwest Airlines dog fee costs, and which routes allow animals. By the end, you’ll know exactly how the Southwest animal policy works, without digging through fine print.
Table of Contents
Does Southwest Airlines Allow Pets on Flights in 2025?
Yes. Under the updated Southwest pet policy, small vaccinated cats and dogs may travel in the cabin with their owners, making it a pet-friendly airline in the U.S. The airline does not transport pets as cargo or checked baggage.
Quick facts about the Southwest Airlines pet policy
| Feature | Allowed / Not Allowed | Notes |
|---|---|---|
| Travel type | ✅ In-cabin only | No cargo or checked pets |
| Pets accepted | ✅ Cats & dogs | Must be vaccinated |
| Age requirement | ✅ 8 weeks + | Younger pets not accepted |
| Max per passenger | ✅ 1 carrier | Up to 2 pets of same species |
| Carrier rule | ✅ Fits under seat | Remains closed entire flight |
| Behavior rule | ✅ Calm & quiet | Disruptive pets may be denied |
| Unaccompanied Minor with pet | ❌ Not permitted |
Because Southwest limits pets to the cabin, owners avoid the stress and temperature issues that often accompany checked baggage restrictions on other airlines.
How Can I Book a Flight With My Pet on Southwest Airlines?
You can book a pet on Southwest Airlines by calling their customer service, online reservations aren’t available for pets. Once confirmed, pay the Pet Fare (about $125 per flight) at the airport ticket counter using a credit card. Space is limited, so it’s best to add your pet early to your flight reservation.
What Is the Process for Reserving a Pet Spot on Southwest Airlines Flights?
- Call to add a pet to your flight. Use customer service, online booking for pets isn’t available.
- Confirm the route qualifies. The Southwest animal policy only covers domestic flights, no international or mainland Hawaii routes.
- Pay the Pet Fare at the airport counter with a credit card.
- Receive confirmation that your Southwest Airlines pet reservation appears on your ticket.
- Arrive early to check in and verify the carrier meets size requirements.
According to the official Southwest Airlines pet travel policy, the current fare is around $125 per one-way flight, though it may change.
What Are the Pet Booking and Reservation Rules on Southwest Airlines?
| Policy Area | Details |
|---|---|
| Pets allowed | Small cats and dogs |
| Minimum age | 8 weeks |
| Carrier per passenger | 1 |
| Pets per carrier | Up to 2 same species |
| Travel type | In-cabin only |
| Cargo option | Not available |
| Booking method | By phone only |
| Payment method | Credit card at airport |
| Refunds | Fare refundable if canceled |
If you’re flying during peak travel weeks, call early to add a pet to flight Southwest before spaces run out.
Before booking, review the complete list of airline pet travel requirements to understand documentation, carrier, and health rules across major U.S. carriers.
How Much Is the Pet Fare on Southwest Airlines and How Do You Pay It?
The Southwest Airlines dog fee, or standard Pet Fare, must be paid at the airport ticket counter.
Credit cards are the only accepted payment method, and the fee is refundable if you cancel.
- Typical cost: USD 125 per flight.
- Where to pay: At the airport counter, not online.
- Refunds: Full refund if the trip is canceled before departure.
What Does Your Pet Carrier Count As on Southwest Flights?
A pet carrier counts as either a personal item or a carry-on.
You can bring:
- Pet carrier + personal item, or
- Pet carrier + standard carry-on bag.
No third bag is permitted without paying for an extra allowance.
Do Pet Strollers or Crates Have Extra Fees in 2025?
Yes, the Southwest Airlines pet policy changed this year.
| Booking Date | Policy for Pet Stroller/Crate | Fee |
|---|---|---|
| Booked on or before May 27 2025 | Checked free of charge | $0 |
| Booked on or after May 28 2025 | Standard checked bag fees apply | Varies by route |
Southwest is not liable for stroller damage, so use a cover when checking one.
To see how Southwest’s fees stack up, explore our airline pet travel costs guide for side-by-side price comparisons across major airlines.
What Are the Pet Carrier Requirements for Southwest Airlines Flights?
Southwest requires a soft- or hard-sided ventilated carrier that fits completely under the seat in front of you. The maximum pet carrier size is about 18.5 × 8.5 × 13.5 inches, and each passenger may bring one carrier with up to two pets of the same species inside.
What Type of Carrier Does Southwest Allow for Pets?
Only soft-sided or hard-sided ventilated carriers that fit under the seat are approved.
The carrier must be leak-proof, secure, and ventilated on at least two sides.
How Many Pets Can Travel in One Carrier on Southwest Airlines?
You may bring two pets of the same species, either two dogs or two cats, in one carrier.
Mixing species is not allowed.
This rule applies whether you’re flying with a dog on Southwest Airlines or bringing cats.
What Are the Exact Southwest Pet Carrier Dimensions and Size Limits?
Southwest recommends carriers no larger than 18.5 × 8.5 × 13.5 in (47 × 22 × 34 cm).
The carrier must slide completely beneath the seat ahead of you.
| Requirement | Details |
|---|---|
| Type | Soft- or hard-sided ventilated carrier |
| Placement | Under seat in front of passenger |
| Size limit | 18.5 × 8.5 × 13.5 in max |
| Pets per carrier | 2 same species |
| Labeling | “Live Animal” tag recommended |
| Carrier per person | 1 max |
When shopping, check product listings that mention Southwest pet carrier dimensions or “airline approved.”
For a quick size comparison, check our detailed chart of airline pet carrier dimensions to see how Southwest’s limits compare with Delta, United, and others.
Which Destinations Allow Pets on Southwest Airlines Flights?
Pets are allowed on domestic Southwest Airlines flights within the continental U.S. and between Hawaiian Islands. They’re not permitted on international routes or flights to or from mainland Hawaii, and Puerto Rico requires additional vaccination or entry documents.
Are Pets Allowed on All Southwest Flights?
No. The Southwest airlines pet policy limits travel to domestic routes.
- Allowed: Flights within the continental U.S. and between Hawaiian Islands.
- Not allowed: Flights to or from mainland Hawaii.
- Not allowed: Any international itinerary.
Can I Fly With a Cat or Dog to Puerto Rico on Southwest Airlines?
Yes, though Puerto Rico’s import rules apply. Travelers may need a health certificate or proof of rabies vaccination.
For cats, review the Southwest Airlines cat policy, the same carrier and age rules apply.
Do Southwest Vacation Packages Accept Pets?
If you book a Getaways by Southwest vacation, verify the hotel’s own pet rules.
Some partner hotels restrict animals even when the airline allows them.
| Destination | Pet Travel Status | Notes |
|---|---|---|
| Mainland U.S. | ✅ Allowed | Domestic routes only |
| Between Hawaiian Islands | ✅ Allowed | Inter-island flights |
| To/From Mainland Hawaii | ❌ Not allowed | |
| International Flights | ❌ Not allowed | |
| Puerto Rico | ⚠️ Allowed with conditions | Check local requirements |
These limits follow FAA pet regulations, which focus on animal safety and airport compliance.
If you’re still comparing options, our guide to airlines that allow pets highlights which carriers are most accommodating for dogs and cats.
What Is Southwest Airlines’ Policy on Service Dogs and Emotional Support Animals (ESAs)?
Many travelers ask whether their service or emotional support animal can still fly for free.
The answer depends on the type of animal and what assistance it provides.
Are Service Dogs Allowed to Fly for Free on Southwest Airlines?
Yes.
Under the Southwest service dog policy, only trained service dogs that perform specific tasks for a person with a disability may travel without paying a fee.
These animals are protected by the U.S. Department of Transportation (DOT) rules on service animals.
What to know before flying with a service dog:
| Requirement | Details |
|---|---|
| Eligible animal | Trained service dog only |
| Documentation | DOT Service Animal Air Transportation Form |
| Cost | No pet fare required |
| Behavior | Must remain calm and under control |
| Location | Must sit on the floor at owner’s feet, not on a seat |
Southwest reserves the right to refuse boarding if a service dog shows aggressive behavior.
Agents will verify the DOT form and observe how the dog behaves in the gate area.
Are Emotional Support Animals Accepted on Southwest Airlines Flights?
No.
After the federal rule change, emotional support animals (ESAs) no longer qualify as service animals.
They must now travel under the standard Southwest Airlines pet travel policy just like any pet cat or dog.
If you’re traveling with an ESA, here’s what to remember:
- You’ll pay the regular Southwest Airlines dog fee or Pet Fare (about $125 per flight).
- The animal must fit in an approved under-seat carrier that meets Southwest pet carrier dimensions.
- Only cats and dogs are accepted, no rabbits, birds, or exotic species.
This shift aligns Southwest with other pet-friendly airlines that follow FAA pet regulations for cabin travel.
Can I Travel With Cremated Pet Remains on Southwest Airlines?
Yes.
Southwest permits cremated pet remains in the cabin, but there are a few TSA rules to keep in mind.
How Should You Pack Cremated Pet Remains for Air Travel?
- Place ashes in a temporary plastic or cardboard container from the crematorium.
- Avoid sealed metal urns or heavy ceramic containers.
- Keep remains in your carry-on bag, not checked luggage.
- The container must be X-ray screenable at security; if it blocks the image, TSA will not allow it past the checkpoint.
Checklist for bringing pet remains on a Southwest flight
| Item | Allowed? | Screening Method |
|---|---|---|
| Cremated pet remains | ✅ Yes, in carry-on | Must pass X-ray |
| Metal or opaque urn | ❌ No | Cannot be screened |
| Plastic/cardboard container | ✅ Recommended | Clears X-ray easily |
Inform TSA officers that you are carrying cremated remains before screening.
This prevents confusion and speeds up inspection.
What Are the Key Pet-Travel Rules to Remember for Southwest Airlines in 2025?
The full Southwest pet policy is simple once you know the basics.
Here’s a summary every traveler should review before buying a ticket.
| Category | Rule | Notes |
|---|---|---|
| Eligible pets | Small, vaccinated cats & dogs | Must be at least 8 weeks old |
| Travel type | In-cabin only | No checked or cargo pets |
| Pet Fare | About $125 each way | Pay at airport by credit card |
| Carrier limit | One per passenger | Two pets of same species per carrier |
| Carrier size | 18.5 × 8.5 × 13.5 in | Fits under seat |
| Destinations | Domestic only | No international or mainland–Hawaii |
| Puerto Rico | Allowed with rules | May need vaccination proof |
| Service dogs | Fly free | DOT forms required |
| ESAs | Standard fare | Must be in carrier |
Quick Takeaways for Pet Owners
- Book early; space for pets is limited.
- Pay at the airport counter, credit cards only.
- Keep your pet inside the carrier from gate to landing.
- The carrier counts as a personal item or carry-on.
- No international or mainland Hawaii routes accept pets.
- Service dogs fly free; emotional support animals follow standard pet rules.
Frequently Asked Questions
Does Southwest Airlines Allow Pets to Fly in the Cabin?
Yes. Small vaccinated cats and dogs may travel in the cabin on domestic flights under the Southwest airlines pet policy.
How Much Does It Cost to Fly With a Dog on Southwest Airlines?
The Southwest airlines dog fee, also known as the Pet Fare, is about $125 per flight, paid at the airport.
Can I Bring Two Pets in One Carrier on Southwest Airlines?
Yes. You may bring two pets of the same species if they fit comfortably in an approved carrier.
Does Southwest Airlines Allow Pets in Cargo or Checked Baggage?
No. Pets are not accepted in cargo. This avoids risks linked to checked baggage restrictions such as temperature or pressure changes.
Can I Take My Pet on International Flights With Southwest Airlines?
No. The Southwest animal policy limits pets to domestic travel only.
Are Pets Allowed on Flights Between the Hawaiian Islands?
Yes, inter-island flights within Hawaii accept pets that meet cabin-size limits.
What Are the Southwest Pet Carrier Dimensions for 2025?
Carriers should be no larger than 18.5 × 8.5 × 13.5 inches and fit under the seat.
Does Southwest Airlines Require a Health Certificate for Pets?
Usually not for domestic flights, but one may be needed for Puerto Rico or certain states.
Can Emotional Support Animals Fly for Free on Southwest Airlines?
No. Under the new rules, ESAs must travel as standard pets with a paid fare.
Can I Bring a Cat on a Southwest Airlines Flight?
Yes. The Southwest airlines cat policy mirrors the dog policy, same fees, age limits, and carrier requirements.
How Do I Add My Pet to a Southwest Flight Reservation?
You must call Southwest directly to add a pet to flight Southwest. Online booking is not available.
An agent will confirm if space for pets is open on your flight and add a note to your booking.
Be sure to arrive early on the day of travel to pay the fare and complete your Southwest Airlines pet reservation in person.
Can I Earn Rapid Rewards Points for My Pet’s Fare?
No. The Southwest pet policy clearly states that pets do not earn Rapid Rewards points. Only the paying traveler earns points.
Does the Carrier Count as One of My Bags on Southwest Airlines?
Yes. Your pet carrier counts as either a personal item or a carry-on bag.
This rule helps align the airline’s in-cabin pet policy Southwest with its general baggage system.
Are There Weight Limits for Pets Flying on Southwest Airlines?
No specific weight limit exists, but the pet must fit comfortably in the approved carrier.
If your animal is too large to stand, turn, and sit inside the carrier, it cannot travel.
Does Southwest Airlines Have Breed Restrictions for Dogs or Cats?
Southwest does not restrict specific breeds, but certain pets, especially short-nosed or brachycephalic breeds, may have breathing challenges at altitude.
Veterinarians often recommend limiting flight time for these pets.
How Do Security Checks Work When Flying With a Pet on Southwest Airlines?
At TSA screening, you’ll remove your pet and carry it through the scanner while the empty carrier goes through the X-ray.
All carriers may also be hand-inspected.
This process follows FAA pet regulations to ensure both passenger and pet safety.
Are There Pet Relief Areas at Southwest Airlines Airports?
Yes. Every airport served by Southwest has designated relief zones.
Flights will not be delayed for pet breaks, so plan time between connections.
Can Unaccompanied Minors Travel With Pets on Southwest Airlines?
No. Unaccompanied Minors cannot bring pets under the Southwest animal policy.
A guardian or adult passenger must accompany the pet.
What Happens If My Pet Misbehaves During Boarding or the Flight?
Any pet showing disruptive behavior, such as biting, barking excessively, scratching, or urinating in the gate area, may be denied boarding.
This rule is part of the official Southwest Airlines dog policy to maintain a safe and comfortable cabin.
Can I Bring Pet Food or Treats on the Plane With Southwest Airlines?
Yes. Small, dry treats or food are allowed in your carry-on bag.
However, you cannot open or feed the pet during the flight. Southwest wants animals secured for everyone’s comfort.
Does Southwest Airlines Provide Special Tags or Stickers for Pet Carriers?
At check-in, you’ll receive a Southwest Pet Cabin Tag to attach to the carrier.
This identifies the pet as officially checked in and approved for travel.
Can I Travel With More Than One Pet on Southwest Airlines?
Each passenger may bring one carrier, but two passengers on the same reservation can each bring their own pet carrier.
This allows small families or couples to travel together with multiple pets.
Can I Travel With My Pet on Connecting Flights With Southwest Airlines?
Yes, but your entire trip must remain on Southwest-operated flights.
Since the airline doesn’t partner for international connections, make sure all segments are domestic.
What Happens If I Cancel My Flight After Paying the Pet Fare?
The Southwest Airlines dog fee is fully refundable if you cancel the flight before departure.
Ask the agent to process the refund at the ticket counter or call Southwest Customer Service afterward.
Does Southwest Airlines Allow Pets in First Class or Business Class?
Southwest doesn’t divide its cabins into classes, every seat follows the same in-cabin pet policy Southwest.
That means you’ll board in your assigned group like every other passenger.
Are There Temperature Restrictions for Pets on Southwest Airlines Flights?
Unlike airlines with cargo transport, Southwest pets remain in the cabin, where temperatures are controlled.
This removes the need for seasonal or temperature limits that apply under checked baggage restrictions elsewhere.
What Documents Do I Need to Travel With My Pet on Southwest Airlines?
For most domestic flights, Southwest does not require documents.
If you’re traveling to Puerto Rico or between Hawaiian Islands, bring vaccination proof or a health certificate to meet local entry laws.
Can I Travel With a Pregnant Cat or Dog on Southwest Airlines?
Yes, but the animal must be healthy and able to travel comfortably.
If your pet shows distress, the gate agent may advise against boarding for safety reasons.
Are There Any Rules for Flying With Multiple Pets in the Same Household?
Each passenger can bring one carrier, so households with several pets must have multiple travelers.
This ensures that carriers remain within Southwest’s under-seat limits and comply with FAA pet regulations.
Practical Tips for Flying With a Dog or Cat on Southwest Airlines
- Book early: Southwest allows only a small number of pet carriers per flight.
- Test the carrier fit: Ensure your bag matches Southwest pet carrier dimensions before traveling.
- Stay calm at security: Hold your pet firmly while walking through screening.
- Bring a liner: Place an absorbent pad at the bottom of the carrier.
- Feed lightly: Avoid full meals before the flight to reduce motion discomfort.
- Arrive early: Pet check-in may take a few extra minutes.
- Keep tags handy: Attach your name and phone number to the carrier.
- Stay informed: Review the Southwest Airlines pet carrier size and policy updates before each trip.
These steps reduce stress for both you and your pet, keeping the experience safe and comfortable.
Why Southwest Airlines Remains One of the Most Pet-Friendly Airlines?
Southwest’s approach is simple and transparent, no hidden fees, no cargo risks, and straightforward booking.
By allowing pets only in the cabin, the airline eliminates temperature hazards and ensures owners stay close to their companions.
The Southwest pet policy aligns with FAA pet regulations, making it a reliable choice for travelers who value comfort and safety over complicated paperwork.
Whether you’re flying with a dog on Southwest Airlines or traveling with your cat, you’ll find consistent service across every domestic route.
If you’re considering another carrier, read the Delta Airlines pet travel policy to compare in-cabin, cargo, and documentation options.
Conclusion: Southwest Airlines Pet Travel Policy
Flying with pets doesn’t need to be stressful.
Here’s a quick recap of what matters most under the Southwest Airlines pet travel policy for 2025:
- Only small cats and dogs can fly in the cabin.
- Pay the Southwest Airlines dog fee of about $125 at the airport counter.
- Each traveler may bring one carrier, holding up to two pets of the same species.
- No cargo or international travel is allowed.
- The carrier counts as a personal item or carry-on.
- Service dogs fly free; emotional support animals travel as regular pets.
- Follow FAA pet regulations for health, safety, and carrier size.
Southwest’s no-nonsense rules make it one of America’s most pet-friendly airlines, perfect for anyone who loves keeping their furry companion close on every trip.