Airline Pet Rules

All airlines

Southwest Airlines pet policy

What Southwest Airlines allows for pets, from its own pages, checked 1 November 2026.

Pets in the cabin: yes$125 per Pet carrier one-way U.S. Mainland. $35 per Pet carrier between Hawaiian Islands
Checked or cargo: no
Emotional support animals fly as petsUnder service animal rules

Pets in the cabin

Animals allowed
small, vaccinated domestic cats and dogs123
Cabin fee
$125 per Pet carrier one-way U.S. Mainland. $35 per Pet carrier between Hawaiian Islands123
Carrier size
18" (L) x 10.5" (W) x 10" (H). Southwest Pet Carrier 15" (L) x 10" (W) x 10" (H)123
Pets per passenger
1 pet carrier per ticketed customer, up to 2 small cats or dogs of the same species123
Minimum age
eight (8) weeks old123
Routes
Domestic flights123

Checked bags, cargo and limits

Details
No pets are transported in the cargo compartment.1

Service animals and booking

Service animals
Trained service dogs only. Present a completed DOT Service Animal Air Transportation form, dated on or after ticket purchase, at the ticket counter or gate.4
How to book a pet
Space is limited, so reserve in advance by phone. Pay the Pet Fare at the ticket counter. It is refundable if you cancel.1
Emotional support animals
Not accepted as service animals. They can travel as pets under the pet rules.4

Read Southwest Airlines's own pet page before you book.

Sources

  1. Pet policy, Southwest Airlines, checked 1 November 2026
  2. Optional travel charges, Southwest Airlines, checked 1 November 2026
  3. What type of pet carriers can I bring, Southwest Airlines, checked 1 November 2026
  4. Traveling with a trained service dog, Southwest Airlines, checked 1 November 2026