Spirit Airlines Pet Policy Fee: What the $125 Cabin Charge Covered

As of September 2026, the Spirit Airlines pet policy fee was $125 per pet carrier, each way, for small pets flying in the cabin on domestic itineraries—about $250 round trip for one carrier. The Spirit Airlines pet policy fee applied only while Spirit operated passenger flights; Spirit Aviation Holdings announced an orderly wind-down on May 2, 2026, cancelling all flights. This guide records the last widely published cabin rules, carrier limits, and how that fee compared with other U.S. airlines.

The Spirit Airlines pet policy fee was the optional service charge Spirit charged for each approved in-cabin pet container on eligible domestic flights. Spirit’s own Contract of Carriage required a service charge per pet carrier and set hard limits on species, container size, and cabin capacity, while secondary travel publishers consistently listed that charge as $125 USD each way.

Last updated September 2026 by Animal Passport. This article is informational only and is not veterinary, legal, or booking advice. Always confirm current rules with any airline you actually fly.

Does Spirit Airlines still charge a pet fee in 2026?

No live Spirit itineraries remain after the May 2026 wind-down. Spirit Aviation Holdings, Inc., parent of Spirit Airlines, LLC, stated on May 2, 2026, that it had started an orderly wind-down of operations effective immediately, that all Spirit flights were cancelled, and that guests should not go to the airport, according to the company’s press release distributed via PR Newswire and filed with the U.S. Securities and Exchange Commission (SEC) as an exhibit to a Form 8-K.

People still search “spirit airlines pet policy fee” because archived booking pages, older tickets, and comparison charts still cite the old price. The practical answer for travelers today is: you cannot buy a new Spirit pet seat; use another carrier’s current pet schedule instead.

What the Spirit Airlines pet policy fee covered

While Spirit flew passengers, its Contract of Carriage (section 6.2) stated that on domestic flights—between two points within the United States or between the United States and its territories—Spirit would accept certain pets in the guest cabin for an extra charge. The same section said there was a service charge for each pet carrier. Spirit’s published Contract of Carriage did not print the dollar amount in that section; major travel publishers that tracked Spirit’s optional fees, including The Points Guy in guides updated through 2024, reported the amount as $125 per container, one way.

Some older third-party summaries listed $110. Where sources disagree, treat the Contract of Carriage rules as the primary operational constraints and treat $125 as the last commonly published retail fee reported by outlets that reviewed Spirit’s optional charges before the wind-down.

• Fee unit: per pet carrier (not always per animal), each way
• Typical round-trip cost for one carrier: about $250, before other bag fees
• Payment timing: publishers reported the fee at reservation or airport check-in, depending on how the pet was added
• No cargo alternative: Spirit stated it did not accept animals as cargo or checked baggage (Contract of Carriage section 6.4)

Animals Spirit allowed under the paid pet policy

According to Spirit’s Contract of Carriage section 6.2, domestic cabin pets were limited to domesticated dogs, cats, and—in some cities—rabbits and small household birds (including parrots, finches, canaries, and parakeets). Birds that were not household birds—farm poultry, waterfowl, game birds, birds of prey, or flightless birds—were not accepted.

Route limits mattered as much as species. Spirit’s Contract of Carriage stated that rabbits and birds were not accepted to and from cities in Puerto Rico and the U.S. Virgin Islands. Guests traveling to or from U.S. territories were responsible for local laws and for furnishing valid health and rabies vaccination certificates when required. Spirit also stated it did not accept pets in cabin on international flights, except for service animals when permitted by the destination and when section 6.3 requirements were met.

The Points Guy’s Spirit pet-policy explainer similarly summarized that domestic dogs and cats could fly throughout the U.S., Puerto Rico, and the U.S. Virgin Islands, while household birds and small domestic rabbits were limited to domestic routes excluding Puerto Rico and the U.S. Virgin Islands, and that pets needed to be at least eight weeks old and fully weaned.

Carrier size, weight, and cabin capacity rules

Spirit’s Contract of Carriage section 6.2 set these mechanical rules for paid pets:

1. The animal had to be harmless, not offensive, odorless, and require no attention during transit.
2. The container had to be inspected and approved by Spirit and fit under the seat in front of the guest. Maximum container size was 18″ × 14″ × 9″ (45.72 cm × 35.56 cm × 22.86 cm) overall (L × W × H). The pet had to be able to stand and turn around in the container.
3. Only one pet container per guest with a confirmed reservation. A maximum of two similar pets (for example, two dogs or two cats) could share one container if both fit. Pets could not be removed from the container during transit.
4. A maximum of six pet containers per aircraft cabin.
5. If the animal became offensive or caused a disturbance, it would be removed at the first en-route stop.
6. Spirit assumed no responsibility for impaired health or death of the animal.
7. A service charge applied for each pet carrier.
8. Unaccompanied minors could not travel with pets.
9. A pet carrier containing a pet counted toward the guest’s carry-on baggage allowance.

The Points Guy reported that only soft-sided carriers were allowed (not styles that let a pet’s head poke out), that the combined pet-and-carrier weight limit was 40 pounds, and that pet travelers could not sit in the first row or an emergency exit row. Because the Contract of Carriage emphasizes under-seat fit and the six-carrier cap more than a printed weight number, travelers historically needed both documents and a gate inspection.

How the Spirit fee compared with other U.S. airlines

As of early 2026 reporting windows, Spirit’s $125 one-way cabin pet fee sat in the middle-to-upper range of U.S. ultra-low-cost and network carriers. The Points Guy’s pet-friendly airlines comparison listed Spirit at $125 one-way for small domesticated dogs, cats, household birds, and small domestic rabbits, with no international pet cabin travel and with birds/rabbits blocked on Puerto Rico and U.S. Virgin Islands routes.

Fees change. After Spirit’s wind-down, compare live schedules on the airline you actually book. Autopilot’s May 2026 multi-carrier chart still listed Spirit at $125 with an 18″ × 14″ × 9″ soft-sided carrier and two pets per carrier—useful as a historical snapshot published days after Spirit’s May 2 cessation announcement, not as a live booking offer.

Service dogs versus emotional support animals

Spirit’s Contract of Carriage section 6.3 accepted trained service dogs without charge when documentation and control rules were met. Spirit defined a service animal as a dog at least four months of age, regardless of breed or type, individually trained to do work or perform tasks for a qualified individual with a disability. Emotional support animals and service animals in training were accepted only as pets in cabin for an extra charge and had to meet section 6.2 pet conditions.

That split matches federal policy. The U.S. Department of Transportation (DOT) final rule on traveling by air with service animals, published in the Federal Register on December 10, 2020, and effective January 11, 2021, defines a service animal as a dog individually trained to do work or perform tasks for a person with a disability and allows airlines to treat emotional support animals as pets rather than service animals. Spirit’s paid ESA treatment was therefore consistent with DOT’s Air Carrier Access Act regulation, not a Spirit-only invention.

Health certificates, territories, and international paperwork

Spirit’s Contract of Carriage put the burden on guests flying to or from U.S. territories to check local pet rules and furnish valid health and rabies vaccination certificates when required. The Points Guy likewise noted health certificates for the U.S. Virgin Islands and a rabies vaccination certificate for Puerto Rico in its Spirit summary.

For true international pet export from the United States, the United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) advises contacting a USDA-accredited veterinarian early, meeting destination-country requirements, and obtaining any required USDA-endorsed health certificate. USDA APHIS’s pet travel process overview (last modified June 18, 2026) also states that airlines may have different or additional requirements beyond destination-country entry rules. Spirit’s former ban on most international cabin pets meant these APHIS pathways applied mainly when travelers switched to another airline after Spirit’s exit.

How Animal Passport differs from airline pet fees and travel documents

Airline pet fees and USDA or destination health certificates are travel and regulatory tools. They are not the same product as Animal Passport, a digital animal and livestock identity system that uses muzzle biometrics—because a nose print is unique like a fingerprint—captured on a phone. An Animal Passport record can bind owner, breed, estimated age, body condition, and vaccination history; age can be estimated from a dental photograph with a confidence score; and body condition can be scored 1–5 from a side-profile photo.

In August 2025, that biometric approach was used in livestock flood rescue in Pakistan so farmers could reclaim animals after paper tags washed away. That field use case is about reclaiming identity when physical tags fail—not about boarding a Spirit flight or replacing an EU pet passport / PETS travel scheme document. For more field and identity explainers, see the Animal Passport blogs. Never confuse a biometric livestock ID product with a government-issued travel passport or with an airline’s optional pet service charge.

Practical checklist if you researched Spirit and must rebook elsewhere

1. Confirm the new airline’s current one-way pet fee and whether it is charged per segment or per direction.
2. Measure your soft-sided carrier against that airline’s under-seat dimensions; Spirit’s 18″ × 14″ × 9″ box is not universal.
3. Ask how many cabin pet carriers are allowed on your specific flight and reserve early.
4. Verify species rules—rabbits and birds were relatively open on Spirit but are restricted on many network carriers.
5. If you need territory or international movement, start with USDA APHIS destination requirements and a USDA-accredited veterinarian, then add airline forms.
6. If you were traveling with an emotional support animal, budget for a standard pet fee under the DOT 2021 service-animal definition.

Bottom line for searchers: the Spirit Airlines pet policy fee most travelers remember is $125 each way per cabin carrier under Spirit’s last published optional-fee reporting, with hard Contract of Carriage limits of six carriers per cabin and an 18″ × 14″ × 9″ under-seat container—but as of September 2026 that fee is historical because Spirit no longer operates passenger flights.