Spirit is a particularly relevant airline for Florida pet travel because Florida is one of its strongest markets.
Its pet policy is also more flexible than many travelers realize.
On eligible domestic flights, Spirit currently accepts small:
- Dogs
- Cats
- Domestic rabbits
- Small household birds
in the aircraft cabin. Spirit does not transport ordinary pets as checked baggage or cargo.
Spirit Pet Policy at a Glance
As of September 2026:
- Pets travel in the cabin only.
- Dogs, cats, some rabbits and small household birds are accepted.
- Pets must be at least 8 weeks old and fully weaned.
- Carrier maximum: 18 x 14 x 9 inches.
- Spirit currently accepts soft-sided pet carriers only.
- One carrier is allowed per passenger.
- Up to two compatible similar pets can share one carrier.
- Maximum six pet carriers per aircraft cabin.
- Pets must remain inside the carrier.
- Ordinary pets are not accepted on international Spirit flights.
- Guests traveling with pets must check in at the ticket counter.
Which Animals Can Fly on Spirit?
Spirit accepts small domesticated:
- Dogs
- Cats
- Rabbits
- Household birds such as parakeets, canaries and finches
on eligible domestic routes.
There are exceptions.
Rabbits and birds are not accepted on Spirit flights to or from Puerto Rico or the U.S. Virgin Islands.
Spirit does not accept animals such as:
- Reptiles
- Spiders
- Exotic animals
- Farm poultry
- Waterfowl
- Birds of prey
under its ordinary cabin-pet policy.
Minimum Pet Age
Your pet must be at least:
8 weeks old and fully weaned.
Spirit Pet Carrier Size
Spirit’s current maximum carrier dimensions are:
18 x 14 x 9 inches.
The carrier must fit beneath the seat in front of you.
Spirit currently specifies soft-sided carriers for cabin pets and does not permit designs where the animal’s head remains outside the carrier.
The Pet Must Fit Comfortably
The animal has to be able to:
- Stand
- Turn around
inside the closed carrier.
This is an important distinction.
The question isn’t simply whether your dog can physically be zipped inside an 18-inch bag.
It needs enough usable space to travel appropriately.
Can Two Pets Share One Carrier?
Yes.
Spirit permits up to two similar small pets in a single carrier when both fit appropriately.
Examples could include:
- Two small dogs
- Two small cats
You still may bring only one pet carrier per passenger.
For someone traveling with two tiny dogs, that can make Spirit more attractive than airlines requiring one pet per carrier.
Maximum Pets Per Flight
Spirit permits a maximum of:
Six pet containers per aircraft cabin.
That means you should add the pet early.
An available passenger seat does not guarantee remaining pet capacity.
How Do You Add a Pet?
Spirit currently recommends adding a pet through its customer-service chat.
Advance notice is recommended because of the six-carrier flight limit.
Pet Fee
Spirit charges for ordinary pet transportation, but its current support page directs travelers to its live optional-services pricing rather than publishing a fixed amount in the pet-policy text.
For PetFriendlyFlorida.com, I would not hard-code this fee without checking Spirit’s live booking price when the page is published.
That avoids leaving an outdated fee sitting on the site after Spirit changes its fare structure.
One useful exception: Spirit’s current Free Spirit terms say qualifying Gold members do not pay the pet fee.
You Have to Check In at the Counter
Traveling with a pet changes Spirit’s normal check-in routine.
Spirit says passengers traveling with pets must check in at the airport ticket counter rather than relying solely on:
- Online check-in
- Kiosk
- Curbside check-in
Leave extra time.
The Pet Stays in the Carrier
Your pet must remain inside its carrier during transit.
Do not plan on:
- Holding the dog on your lap
- Letting the cat out after takeoff
- Leaving the carrier open at the gate
Seating Restrictions
Spirit does not allow passengers traveling with pets to sit in:
- The first row
- Emergency exit rows
That first-row restriction matters because Spirit’s premium front seating may otherwise look attractive.
Does the Carrier Count as Luggage?
Yes.
Spirit’s contract states that a pet carrier containing a pet counts toward the passenger’s carry-on baggage allowance.
Factor that into the total trip price when comparing Spirit with another carrier.
No Cargo Pets
Spirit does not transport ordinary animals:
- As checked baggage
- As cargo
So a large dog that cannot comfortably fit beneath the seat cannot simply be checked underneath the aircraft.
Domestic Flights Only
Ordinary pets are not accepted on Spirit international flights.
Service animals are handled separately when permitted under applicable destination rules.
For normal domestic flights into Florida, however, the pet program is available.
Puerto Rico and U.S. Virgin Islands
These U.S. territories have additional rules.
Spirit notes that:
- Rabbits and birds are prohibited on those routes.
- Puerto Rico requires rabies documentation.
- U.S. Virgin Islands travel involves health-document requirements.
If your Florida vacation includes a Caribbean side trip, don’t assume the domestic rules continue unchanged.
Does Spirit Require a Health Certificate?
For an ordinary pet traveling in the cabin within the mainland United States, Spirit says it does not require a health certificate.
The U.S. Virgin Islands are an exception.
Destination governments can still impose their own requirements.
Snub-Nosed Dogs
Spirit does not currently publish a blanket ban on brachycephalic dogs in its cabin-pet guidance, but it specifically warns that snub-nosed breeds may face greater air-travel risks and recommends veterinary consultation.
That includes dogs such as:
- Bulldogs
- French Bulldogs
- Pugs
- Boston Terriers
Air travel and Florida heat are both extra concerns for these breeds.
Pet Behavior Matters
Spirit can refuse or remove an animal that is:
- Aggressive
- Ill
- In distress
- Offensive
- Creating a significant disturbance
Carrier compliance alone doesn’t guarantee acceptance.
Service Dogs
Trained service dogs follow Spirit’s separate service-animal process.
Spirit currently asks passengers to submit the DOT Service Animal Air Transportation Form in advance when possible. Emotional-support animals travel under the ordinary pet rules rather than as service animals.
Is Spirit Good for Florida Pet Travel?
Spirit can be a strong choice when:
- Your animal is small.
- Spirit has a nonstop route.
- You’re traveling with a rabbit or household bird accepted by Spirit.
- Two tiny same-species pets can share one carrier.
- You’re already a qualifying Free Spirit Gold member.
It doesn’t work for:
- Large dogs
- Cargo pets
- Ordinary international pet travel
Before Booking Spirit
Confirm:
- Species accepted
- Pet is at least eight weeks old
- Carrier fits 18 x 14 x 9
- Animal can stand and turn
- Pet capacity remains on the flight
- Current live pet fee
- Seat is compatible
- Destination rules
- Return trip accepts the pet
Spirit Pet Policy Bottom Line
For domestic Florida trips, Spirit is one of the more flexible U.S. airlines regarding pet species:
Small dogs, cats, rabbits and some household birds can travel in an approved under-seat carrier.
The biggest restrictions are simple:
Cabin only, small pets only, and no ordinary international pet travel.
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