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. One pet carrier per customer is allowed. A maximum of 2 similar pets per pet carrier is permitted as long as pets can stand up, turn around and lie down comfortably. The carrier must be able to fit under the seat in front of you. Pet must remain in the carrier throughout the flight, and no part of the pet may protrude from the carrier.
Pet Policy Details: Visit Spirit Airlines Website