Taking a dog on Southwest: reserve a pet place, not a passenger seat
Ordinary pets are not accepted on international itineraries or between the continental United States and Hawaii. Reserve through Southwest and pay the applicable pet charge at the airport counter. Before buying your own ticket, give Southwest the complete itinerary and the animal’s carrier measurements. Ask for confirmation that a pet place is available, and check whether both directions have been added. Keep the pet confirmation with your passenger booking rather than treating a seat purchase as evidence of acceptance. For departure, plan around keeping the carrier closed and under the seat. Do not arrive expecting a cargo alternative for an animal that cannot fit. Get the current pet charge for your exact trip; this answer does not supply an unverified fixed price.

Important unknowns
- Southwest ordinary in-cabin pets; only visually matched current pet provisions.
More booking questions
Check acceptance before booking
Before buying your own ticket, give Southwest the complete itinerary and the animal’s carrier measurements. Ask for confirmation that a pet place is available, and check whether both directions have been added. Keep the pet confirmation with your passenger booking rather than treating a seat purchase as evidence of acceptance.
Checked againstContract of carriage
Prepare for departure
For departure, plan around keeping the carrier closed and under the seat. Do not arrive expecting a cargo alternative for an animal that cannot fit. Get the current pet charge for your exact trip; this answer does not supply an unverified fixed price.
Checked againstContract of carriage