Frontier Plane Animals: The Tail Characters and the Pets Allowed On Board

Frontier plane animals are the named wildlife characters painted on the tail of every Frontier Airlines jet, such as Flo the Flamingo, Otto the Owl and Thunder the Bison. Frontier groups them into Land, Sky, Aquatic and Endangered galleries. People also use the phrase to ask which real animals can fly on Frontier. As of October 2026, the answer is domesticated dogs, cats, rabbits, guinea pigs, hamsters and small household birds. They must ride in the cabin, cost $149 per pet each way, and can only fly on domestic routes.

This guide covers both meanings. The first half is about the painted characters and where they came from. The second half covers the rules for live animals, based on Frontier Airlines' own policy pages, the U.S. Department of Transportation (DOT), the Centers for Disease Control and Prevention (CDC) and the United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS). By Animal Passport. Last updated October 7, 2026.

What are Frontier plane animals?

Each Frontier aircraft carries one animal portrait on its tail, and the animal's name is painted near the cockpit. Frontier calls these characters its "brand ambassadors." On its Plane Tails page, the airline says it is "committed to telling the stories of the incredible animals that call the oceans, forests and plains home to bring awareness and education to the public." Frontier pairs that statement with its own claim to be "America's Greenest Airline." That is the airline's marketing description, not an independent rating.

As of October 2026, Frontier names its newest tails as Axl the Axolotl, Manuel the Squirrel Monkey and Leaf the Morelet's tree frog. On board, flight attendants hand out collectible animal trading cards to children, according to Frontier's Family & Pets page.

A short history of the animal tails

The tails are as old as the current airline. Simple Flying reported in September 2024 that Frontier began painting animals on its Boeing 737-200 and 737-300 jets flying out of Denver International Airport in 1994. Frontier kept the animals when it switched to an all-Airbus fleet in the early 2000s.

On May 12, 2003, Frontier launched its "a whole different animal" advertising campaign, which turned the tail animals into talking TV characters. The company's press release, republished by Breaking Travel News, said the animals appeared on "the tails of the airline's 36-aircraft fleet" at the time. Simple Flying also notes that the 2014 rebrand kept the animals, and that retired aircraft often pass their animals on to newer planes. For example, Jaragua the Ricord's Rock Iguana went onto an Airbus A321neo (registration N651FR) delivered in August 2024.

The official roster by category

Frontier's galleries overlap. An endangered species can appear in both the Endangered list and its habitat list. The table below shows examples taken directly from Frontier's pages as of October 2026.

Counts are approximate because Frontier adds tails as new aircraft arrive, and different copies of its pages showed slightly different lists when we checked them. Treat Frontier's live galleries as the authoritative list.

The livestock on Frontier's tails

From a livestock perspective, it stands out that several tails show working or range animals rather than exotic wildlife. They include Lone Star the Longhorn Steer, Thunder the Bison, Champ the Bronco and Buck the Pronghorn. These animals are part of the ranching identity of the Mountain West and Texas, but none of them could board a Frontier flight in real life. USDA APHIS classes livestock and poultry outside its definition of pets, and Frontier carries no cargo animals at all.

Which real animals can fly on a Frontier plane?

Frontier Airlines carries pets only in the cabin and only on flights within the United States. Its help center says the airline does "not transport pets in the cargo hold," and checked pets are not allowed.

Allowed species

• Domesticated dogs and cats, at least 8 weeks old
• Rabbits
• Guinea pigs
• Hamsters
• Small household birds

Species Frontier never accepts

Frontier's Family & Pets page lists the following as never accepted: large birds (parrots, macaws, cockatoos, birds of prey), rodents including mice, rats and squirrels, beavers, ferrets, reptiles including snakes, amphibians, spiders and insects. In Frontier's words, "please, no lions, tigers, or bears." Hamsters and guinea pigs are allowed even though other rodents are banned, because Frontier names them separately.

How much does it cost to bring a pet on Frontier?

Frontier's Optional Services page lists a pet charge of $149 per pet, per direction (non-refundable) as of October 2026. That makes a round trip $298 per pet. Sources disagree here. The Points Guy's Frontier pet-policy guide, dated June 2022, still quotes $99 one-way. Frontier's own fee schedule is the controlling source, so budget for $149 and check again at booking.

Carrier size and cabin rules

• Hard-sided carrier: maximum 18 in. long x 14 in. wide x 8 in. high (Frontier, 2026).
• Soft-sided carrier: maximum 18 in. long x 14 in. wide x 11 in. high. Frontier recommends soft-sided carriers.
• The pet must be able to stand, turn around and lie down naturally, and the carrier must fit under the seat in front of you.
• Each passenger may bring one pet, and only one adult dog or cat is allowed per carrier.
• The pet must stay in its carrier for the whole flight. You cannot sit in row one or an exit row.
• You can still bring a personal item or a paid carry-on bag along with the pet carrier.
• Frontier recommends no food or water within four hours of departure. It also states that no oxygen will be given to a pet in an emergency.

Health certificates on domestic flights

Frontier says it does not require a health certificate for cabin pets on U.S. flights. It warns that the destination state may require one, and it points travelers to USDA Veterinary Services. Puerto Rico and the U.S. Virgin Islands are stricter, as covered below.

How to add a pet to a Frontier booking

1. Confirm your animal is an allowed species and old enough. Dogs and cats must be at least 8 weeks old.
2. Measure your carrier against Frontier's limits: 18 x 14 x 8 inches for hard-sided and 18 x 14 x 11 inches for soft-sided.
3. When booking, choose Cabin Pet in the Passenger Info section. For an existing trip, go to Manage Trip and select Add Pet in Cabin (Frontier help center, 2026).
4. Pay the $149 per-direction charge in advance, or pay it when you check in your pet.
5. Check the entry rules for your destination state or territory. Frontier says this is the passenger's responsibility.
6. On the day of travel, avoid row one and exit rows, and keep the pet in its carrier from gate to gate.

Service dogs and emotional support animals on Frontier

Service animal rules come from federal regulation, not airline preference. The DOT final rule published in the Federal Register on December 10, 2020 defines a service animal as "a dog, regardless of breed or type, that is individually trained to do work or perform tasks" for a person with a disability. It also lets airlines treat emotional support animals as pets.

Frontier's Special Services page applies that rule as follows:

• Only dogs are accepted as trained service animals, including fully trained psychiatric service dogs.
• A passenger may travel with up to two service animals.
• Passengers must submit the DOT Service Animal Air Transportation Form at least 48 hours before departure. If the trip was booked within 48 hours of departure, bring the form to the gate.
• Frontier's documentation portal says typed PDF forms are approved instantly, while handwritten forms can take up to 7 days to process.
• As of February 1, 2021, Frontier no longer accepts emotional support animals. They may fly as pets for the standard fee.
• A passenger with a trained service dog may also bring one pet in the cabin.

International and territory travel with animals on Frontier

As of October 2026, Frontier's Family & Pets page says the airline "will not accept new pets for International Travel." Only service dogs may fly internationally. Each one needs a CDC Dog Import Form receipt, must be at least 4 months old, must look healthy on arrival, and must have a microchip that a universal scanner can read. Service dogs coming from countries that the CDC rates as high-risk for dog rabies need extra documentation.

The CDC's dog importation rules, updated August 1, 2024, depend on where the dog was vaccinated and which countries it visited in the previous six months. USDA APHIS, whose pet-travel page was last modified on March 20, 2026, notes that the CDC is "the primary authority for dog imports."

Frontier lists separate rules for U.S. territories:

• Puerto Rico: an official health certificate valid for 30 days, rabies vaccination within six months for animals over four months old, external parasite treatment within 72 hours before entry, and official ID such as a microchip or a metal collar tag.
• U.S. Virgin Islands: a health certificate stating the animal did not come from a rabies-quarantined area, and rabies vaccination within six months, except for dogs and cats under 12 weeks old.

Pets, service dogs and livestock compared

Airline pet rules vs. Animal Passport's biometric ID

People searching for airline animal rules often run into the word "passport," so the distinction matters. Frontier's pet policy, the DOT service animal form, the CDC Dog Import Form and USDA-endorsed health certificates are official travel requirements set by airlines and government agencies.

Animal Passport is something else: a digital animal and livestock passport built on muzzle biometrics. An animal's nose print is unique, like a human fingerprint. A farmer captures it with a phone, and the record links the animal to its owner, breed, estimated age, body condition and vaccination history. Age is estimated from a dental photograph and comes with a confidence score. Body condition is scored from 1 to 5 using a side-profile photo.

Animal Passport is not a government-issued travel document. It does not replace a CDC form, a DOT attestation or a veterinary health certificate, and it is not a veterinary diagnosis or legal advice. It solves a different problem: proving which animal belongs to whom. In August 2025, Animal Passport was used during livestock flood rescue in Pakistan so farmers could reclaim animals after floods washed away their paper tags. You won't see a longhorn steer like Lone Star in a Frontier cabin, but on the ground, cattle like him need ID that doesn't wash away. More livestock-identity reporting is on the Animal Passport blog.

Bottom line

"Frontier plane animals" refers both to the painted wildlife characters that have flown on Frontier's tails since 1994 and to the short list of real animals the airline carries. If you're spotting tails, Frontier's Plane Tails galleries are the official roster. If you're flying with a pet, as of October 2026 Frontier allows only in-cabin dogs, cats, rabbits, guinea pigs, hamsters and small household birds on domestic flights, for $149 each way. Service dogs are the only animals it carries internationally. Fees and rules change, so check Frontier's live pages before you book.