Southwest Airlines pet policy (2026)
IATA: WN
Documented rules for dogs and cats on Southwest Airlines: cabin travel available (fee from $125); no cargo option.
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Quick overview
- Cabin travel permitted on selected routes
- Cargo transport not available
- Advance booking required, limited spots per flight
- Weight, carrier, and breed restrictions apply
Official Southwest Airlines Pet Policy
Link verified and tested. Always confirm with the airline before booking.
Updated 2026
Key facts
Travel options
- Carrier must fit under the seat in front of you
- Pet must remain inside carrier throughout the flight
- Fee: $125 USD per one-way trip
- Carrier type: Soft-sided or hard-sided, leak-proof, well-ventilated, and small enough to fit under the seat in front of you.
- Max pets per passenger: 1
- Accepted pets: Small dogs and cats only
- Advance approval required
Specific limits vary by aircraft and fare class.
Not sure which of these apply to you? Your personalised plan will tell you exactly what's needed.
Frequently asked questions
Does Southwest Airlines allow pets in the cabin?
Southwest Airlines allows pets in the cabin on selected routes when size, weight, and carrier requirements are met.
Does Southwest Airlines transport pets in cargo?
Southwest Airlines does not offer pet transport in the cargo hold.
What documents are required to fly with a pet on Southwest Airlines?
Southwest Airlines requires a health certificate and rabies vaccination. International travel requires microchip records and import permits.
Are brachycephalic breeds allowed on Southwest Airlines?
Brachycephalic breeds are restricted from cargo travel on many airlines including Southwest Airlines.
Are emotional support animals accepted on Southwest Airlines?
Emotional support animals are treated as regular pets on Southwest Airlines and subject to standard policies, fees, and carrier requirements.
Not sure what applies to your situation?
Get a personalised step-by-step plan for your specific route, airline and pet.
Pet travel rules change frequently and may vary by aircraft, route, and destination. Always confirm requirements directly with Southwest Airlines before booking.