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S
(3.9)
Carry On Only
Domestic Only
Low Cost
Low Fee
Small cats, dogs, rabbits, birds allowed in cabin ($125/way) on domestic flights (incl. PR/USVI). Max 6 pet carriers/flight, 1 carrier/guest, max 2 pets/carrier. Soft-sided carrier (max 18x14x9") under seat. No cargo/checked.

Cabin

💵Fee:$125flat
⚖️Max Weight:0-0 kg
🐾Per Passenger:1
🐶Pets per carrier:2
👜Carrier size:18"×14"×9" in.
👶Min Age:8 weeks
Chat with Spirit to add a pet at the time of booking or later. Final check-in must be done at the ticket counter (no curb-side or kiosk).
Species:
🐱Cat
🐶Dog
🐰Rabbit
🐦Household Bird
Carrier counts as carry-on; max combined weight 40 lb; pets remain in carrier entire flight.

Service Animal

🐾Per Passenger:2
👶Min Age:8 weeks
DOT form required 48 h prior. For international routes contact Spirit for destination-specific docs.
Documents:
📄Dot Form
Trained service dogs only; DOT form required 48 h prior; ESA treated as pets and pay $125.