Southwest Airlines Pet Policy
Southwest Airlines is cabin-only for pets, accepting small vaccinated dogs and cats on all domestic flights for a $125 fee each way. There is no cargo or checked baggage option, so larger pets cannot fly on Southwest. Carriers must fit under the seat, and reservations are highly recommended as space is limited to 6 pets per flight.
Policy Overview
Cabin Pets
Allowed
Cargo Pets
Not allowed
Pet Types
Dogs, Cats
Pet Fee
$125 each way
Pet Limit
1 per carrier
Reservation
Required
International Routes
Same as domestic
Carrier Size Requirements (Cabin)
| Carrier Type | Max Length | Max Width | Max Height |
|---|---|---|---|
| Soft-sided | 18.5" | 13.5" | 9.5" |
Check If Your Carrier Fits
Use our free carrier size checker to see if your pet carrier meets Southwest Airlines's requirements.
Try Carrier Size CheckerImportant Notes
- ! Policies may vary by specific flight, aircraft type, and route. Always confirm with Southwest Airlines directly before booking.
- ! This information reflects Southwest Airlines's currently published general guidance. Individual flights may have different restrictions.
- i Pets allowed in-cabin only on Southwest flights. No cargo or checked baggage option. Pets must remain in the carrier at all times, and the carrier must be stowed under the seat in front of you. Up to 6 pets per flight. No pets on international routes.
- i View Southwest Airlines's official pet policy for the most current information.