In Cabin/Carry-On Pet Fee: $110 one-way
Maximum Weight Allowed: 40 lbs., including carrier
Cargo Area/Checked Baggage Pet Fee: Pets are not allowed in the cargo area or as checked baggage on Spirit Airlines.
Carrier Guidelines: Pets traveling in cabin/carry-on must be transported in a pet travel carrier that does not exceed 18" L x 14" W x 9" H. A maximum of 2 pets per container is permitted, but only one container per guest is allowed. The pets must be able to stand up, turn around and lie down comfortably. The carrier must be able to fit under the seat in front of you. Pets must remain in the carrier throughout the flight, and no part of the pets may protrude from the carrier.
Pet Policy Details: Visit Spirit Airlines Website