Southwest Airlines Pet Policy 2026: Fees, Carrier Size, Breed Rules

Region: North America · IATA code WN

Southwest Airlines pet travel summary

In-cabin pets: Allowed (max 20 lbs combined with carrier).
Cargo / checked baggage pets: Not allowed.
Pet fee: $95 USD (per segment, subject to change).
Max carrier dimensions: 18 × 11 × 8 inches.
Allowed pet types: dog, cat.

Temperature restrictions

No specific temperature embargoes since all pets travel in-cabin only.

Cargo / hold travel notes

Southwest does not offer cargo pet transport. Only small pets that fit under the seat in an approved carrier are accepted.

Booking notes

First come, first served — no advance reservations for pets. Limit 1 pet carrier per customer and 6 per flight. Domestic US flights only.

Always verify directly with Southwest Airlines

Airline pet policies change without notice. Before booking, confirm fees, carrier dimensions, breed restrictions, and embargoes directly with Southwest Airlines via their official pet policy page: https://www.southwest.com/help/baggage/traveling-with-pets.

Data last verified 2026-06-08 from Direct from Southwest Airlines.

About ClearToFly.pet

ClearToFly.pet is operated by WyntreAir LLC, a New Hampshire registered limited liability company founded by Clifford Wilson. ClearToFly.pet is an information and planning service for international pet travel covering 208+ countries and 111+ airlines, sourced from USDA APHIS and official government databases.

Business identity

ClearToFly.pet (WyntreAir LLC)
Founder: Clifford Wilson
Mailing address: PO Box 722, Moultonborough, NH 03254, USA
Email: support@cleartofly.pet
Business inquiries: (650) 265-1193

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Not to be confused with

ClearToFly.pet is a separate, independent business and is not affiliated with any of the following:

CLEAR airport biometric security (clearme.com / Alclear LLC) — a U.S. airport identity verification service.

Clear2Fly Aerospace — an aircraft maintenance company.

Cleartrip — an Indian travel booking platform.

petsfly.com and any pet shipping, pet relocation, or pet transport broker.

Any scam reports, complaints, or reviews about CLEAR, Clear2Fly Aerospace, Cleartrip, petsfly.com, or pet shipping or relocation brokers do not pertain to ClearToFly.pet or WyntreAir LLC.

What we are not

ClearToFly.pet does not ship pets, does not handle veterinary paperwork on customers' behalf, and does not represent any government agency or airline. Customers must work directly with their veterinarian, airline, and government agencies for actual travel. Always verify requirements with official government and airline sources before booking.

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