Clear answer is Yes. Small vaccinated dogs can fly in-cabin on Southwest domestic routes only.
When I travel from one state to another in the USA, I usually fly with Southwest Airlines. It is hard to beat in the airline industry.I often see passengers traveling with their dogs.
Today, I will clearly answer a frequently asked question: Can dogs travel on Southwest Airlines? In this guide, I will show you rules, fees, booking steps, and real tips. You will know exactly how can dogs travel on Southwest Airlines without drama or last‑minute surprises.
Southwest Airlines pet policy at a glance
Here is the simple version. Southwest allows small dogs and cats to fly in the cabin on domestic flights. There is no cargo option. Your pet must stay in a soft or hard carrier under the seat for the whole flight.
Key points you need to know:
- In-cabin pets only. No checked or cargo pets on Southwest.
- Domestic routes only. No pets on international flights or to and from Hawaii.
- Pet fare is typically $95 each way, per carrier, paid at the counter.
- Limit is six pet carriers per flight, first come, first served.
- One pet carrier per customer. Two small pets of the same species may share one carrier.
- Pets must be at least 8 weeks old, healthy, clean, and not disruptive.
- The pet carrier counts as a carry-on or personal item. You may bring one other item.
As of this writing, these points reflect current airline policy and federal guidance. Always confirm before you book, since rules can change. If you are still asking can dogs travel on Southwest Airlines with you in-cabin, yes—if they are small and you follow these steps.
Most small, well-behaved dogs that fit in an under-seat carrier can fly. There is no posted weight limit. The dog and carrier must fit under the seat and allow your pet to stand up and turn around inside.
Eligibility: Which dogs can fly and where they can go
Route limits that matter:
- No pets on any international route. That includes Mexico, Central America, and Caribbean destinations.
- No pets to or from Hawaii.
- Pets are fine on domestic mainland routes and most connections within the U.S.
- Service dogs are different. Trained service dogs can travel to more places under federal rules. Emotional support animals are treated as pets.
If you wonder can dogs travel on Southwest Airlines to Puerto Rico, check at booking time. Policies can shift based on local entry rules, and the airline may restrict certain routes.
How to book a pet reservation on Southwest
Reserve a pet spot as soon as you book your own ticket. Space is limited to six carriers per flight. You will add a pet to your reservation by calling Southwest. You will pay the pet fare at the ticket counter and receive a bright pet tag for the carrier.
Simple booking steps:
- Book your seat, then call Southwest to add your pet.
- Fly nonstop when you can. Fewer segments mean less stress.
- Arrive early. Check in at the counter to pay and get your pet tag.
- Keep your confirmation handy. Staff will verify your pet booking at the gate.
Many readers ask can dogs travel on Southwest Airlines if all six pet spots are taken. Not on that flight. Try another time or day to find space.
Your carrier must be leak-proof, well-ventilated, and small enough to fit under the seat. Soft-sided carriers flex and are easier to fit. Choose one that lets your dog stand and turn. The airline sells a branded carrier, but any compliant one works.
Pet carrier, seating, and onboard rules
What to know about seats and bags:
- Sit anywhere except exit rows and bulkhead seats. You need an under-seat space.
- Keep the carrier closed under the seat in front of you at all times.
- The carrier counts as a carry-on or personal item. You may bring one other standard item.
- No aisle stowage and no overhead bins for pets.
Under-seat sizes vary by aircraft and row. Check the latest guidance when you book. If you ask can dogs travel on Southwest Airlines in a slightly larger carrier, the honest answer is only if it fits fully under the seat without blocking the aisle.
Day-of-travel checklist and step-by-step process
I have flown Southwest with my 12-pound terrier on Dallas to Denver. Smooth trips start at home. Practice time in the carrier. Do short car rides to build calm. On travel day, keep food light and offer water in small sips.
Follow this flow:
- Before the airport: Exercise your dog. Line the carrier with an absorbent pad. Pack meds and treats.
- At check-in: Pay the pet fare. Get the pet tag. Keep your ID and confirmation ready.
- At TSA: Remove your dog, carry or walk through the scanner, and send the empty carrier through X-ray. Use a harness to prevent escapes.
- At the gate: Visit the pet relief area before boarding. Board as usual and keep the carrier closed.
- In flight: Place the carrier under the seat. Offer a chew or lick mat for calm. No sedatives unless your vet insists.
If you are still thinking can dogs travel on Southwest Airlines without stress, yes—if you plan the routine and keep it simple.
Fees, changes, and other limits to know
Expect a pet fare of about $95 each way per carrier. If you cancel your trip, Southwest will refund the pet fare when you do not fly. Same-day changes work if the new flight still has open pet spots.
Other limits to note:
- Six pet carriers per flight, total.
- No unaccompanied minors traveling with pets.
- No pet cargo service on Southwest, ever.
- Weather does not stop in-cabin pets, but always plan for delays.
People ask can dogs travel on Southwest Airlines on standby. You can stand by, but only if a pet spot is open on the new flight.
Health, comfort, and training tips from real flights
A calm dog starts with training, not treats. I teach a “settle” cue on a mat for two weeks before flying. Then I place that mat in the carrier. It becomes a safe den.
Simple comfort tips that work:
- Skip heavy meals 4 hours before departure. Offer water in small amounts.
- Freeze a small bowl of water. It melts slowly after takeoff.
- Pack a favorite chew. Avoid crumbly snacks that make a mess.
- Try a snug vest or pheromone spray if your vet approves. Avoid sedation unless a vet says it is safe.
If your main question is can dogs travel on Southwest Airlines without barking, training and routine are your best tools.
Mistakes I see most often (and how to avoid them)
I have watched many airport meltdowns. Most are avoidable. The biggest issue is showing up with an oversized carrier or no pet reservation.
Avoid these common errors:
- Waiting too long to reserve a pet spot. Call right after you book.
- Choosing bulkhead or exit rows. You need an under-seat space.
- Letting your dog out in the cabin or gate area. Keep the carrier closed.
- Overfeeding before the flight. Light meals help prevent nausea.
Ask yourself one last time: can dogs travel on Southwest Airlines if you skip these steps? They can, but your odds of a smooth trip drop fast.
Frequently Asked Questions of can dogs travel on southwest airlines
Can dogs travel on Southwest Airlines on international routes?
No. Southwest does not allow pets on any international flight. Pets are only allowed on domestic routes within the U.S.
Can dogs travel on Southwest Airlines if they are over a certain weight?
There is no posted weight limit. Your dog must fit comfortably in a compliant under-seat carrier.
Can dogs travel on Southwest Airlines with a same-day flight change?
Yes, if the new flight has an open pet spot. You will keep the same pet fare rules.
Does the pet carrier replace my personal item?
The carrier counts as a carry-on or personal item. You may bring one other allowed item.
Are emotional support animals allowed for free?
No. Only trained service dogs fly for free under federal rules. Emotional support animals follow the pet policy and pet fare.
Can two dogs share one carrier on Southwest?
Yes, if they are small, of the same species, and fit comfortably. They must stay in the closed carrier under the seat.
Can dogs travel on Southwest Airlines to Hawaii or from Hawaii?
No. Southwest does not accept pets on flights to or from Hawaii. Plan alternate care or consider a different airline.
Conclusion
Dogs can travel on Southwest, but only in the cabin on domestic routes, and only when they fit under the seat. Reserve early, use a proper carrier, and follow a calm routine from home to gate to landing. Small steps stack into a smooth, low-stress trip for you and your dog.
Ready to plan your flight? Use this guide as your checklist, call to reserve your pet spot, and travel with confidence. If you found this helpful, share it with a friend, subscribe for more pet travel tips, or leave a question for me to cover next time.
