Cabin rule summary
Small vaccinated domestic cats and dogs may travel in cabin on domestic flights.
Carrier: Maximum carrier size listed at 18.5 x 8.5 x 13.5 in.
Weight: Pet must fit comfortably in the carrier under the seat.
Fee: Typically USD 125 each way per pet carrier.
Booking and exceptions
Call Southwest or check availability early; pet spaces are limited.
Pets are not accepted on international flights or itineraries with international segments.
Confirm before booking
This PawVisa page is a dated snapshot, not an airline guarantee. Confirm the exact route, aircraft, carrier dimensions, and destination rules directly with Southwest Airlines before buying a ticket.
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