Allegiant Airlines Pet Policy 2026: Service Dogs, ESAs, and Pet Travel

Allegiant’s rules split travelers into two groups. A trained service dog flies in the cabin free under the Air Carrier Access Act once the handler submits the Department of Transportation service-animal forms. Everything else, including an emotional support animal, travels as a pet, pays the pet fee, and rides in an approved pet carrier.

This guide covers both paths and the paperwork each one needs. It starts with Allegiant service dog rules, the Allegiant service dog form, and psychiatric service dogs. Then it covers emotional support animals as pets, current pet fees, pet-in-cabin rules, and carrier requirements.

Flying a Service Dog on Allegiant (ACAA)

Allegiant Air follows the Air Carrier Access Act for service dogs. A dog trained to perform tasks for a disability flies in the passenger cabin at no charge, sits within the handler’s space, and travels without a pet carrier. The handler keeps the dog under control at all times.

This service animal path applies only to trained service dogs. It does not apply to pets, emotional support animals, comfort animals, companion animals, or service animals in training.

The difference is task training. A service dog performs disability-related work. An ESA provides comfort through its presence. That distinction decides whether the animal follows Allegiant service animal rules or the Allegiant pet policy.

What counts as a service dog on a flight?

For air travel, a service animal is a dog individually trained to do work or perform tasks for a person with a disability. The disability category includes physical, sensory, psychiatric, intellectual, and other mental disabilities.

The DOT air travel rule recognizes only dogs as service animals. Other species do not receive required service-animal access under the ACAA service-animal rule.

A trained service dog also needs safe animal behavior. The dog stays calm, controlled, and secure at the airport, at the gate, and onboard the aircraft.

Aggressive, disruptive, unsafe, or unsanitary behavior creates a boarding risk, even for a dog with service-animal status. The handler remains responsible for the dog’s conduct, health, and control throughout travel.

The DOT forms Allegiant requires for a service dog

The main Allegiant service dog form is the U.S. Department of Transportation Service Animal Air Transportation Form. This responsibility form covers the dog’s health, training, and behavior.

Allegiant asks for the DOT service-animal form at least 48 hours before scheduled departure. The online submission path runs through the Open Doors Organization Service Animal Forms Portal. Email and mail options also exist for hard-copy submission.

For a flight segment scheduled for eight hours or more, airlines use the DOT Service Animal Relief Attestation Form. This form addresses whether the dog avoids relieving itself during the flight or relieves itself in a sanitary way.

A traveler booking inside the 48-hour window starts the online process as soon as possible and arrives early at the airport. Allegiant also recommends carrying a hard copy of the completed DOT service-animal form during travel.

Required documentation supports Allegiant’s review, but it does not replace training. The dog’s behavior, control, health, and task work remain central to acceptance.

Psychiatric service dogs (PSDs) on Allegiant

A psychiatric service dog is a service dog trained to perform tasks for a psychiatric disability. Examples include interrupting a panic attack, grounding a handler during dissociation, waking a handler from night terrors, or retrieving medication.

On Allegiant Airlines, a psychiatric service dog follows the same ACAA path as any service dog. The handler submits the DOT service-animal forms, keeps the dog under control, and follows Allegiant’s service-animal guidelines.

A psychiatric service dog letter from a licensed mental health professional documents the underlying psychiatric disability. It supports the handler’s disability-related need, but it does not replace the DOT forms Allegiant requires.

A PSD letter also does not turn an untrained dog into a service dog. Free cabin access comes from task training and the DOT service-animal process, not from registration, a certificate, or a letter alone.

How to book and give advance notice

Book the Allegiant Air flight first, then complete the service-animal paperwork through Allegiant’s current process. The online path runs through the Open Doors Organization Service Animal Forms Portal.

Allegiant asks for the DOT Service Animal Air Transportation Form at least 48 hours before the scheduled departure. If booking happens inside that window, the traveler starts the process as soon as possible and arrives early.

At the airport, the service dog stays with the handler and remains under control. Allegiant requires passengers with service animals to be in the gate area at least 30 minutes before scheduled departure.

A service dog travels in the handler’s floor space or another assigned area that keeps the aisle and emergency paths clear. The dog does not occupy a passenger seat, block another traveler’s space, or create a safety issue.

Emotional Support Animals on Allegiant: Treated as Pets

Allegiant treats an emotional support animal as a regular pet. Since the Department of Transportation’s 2021 rule, airlines no longer count ESAs as service animals, so an ESA pays the standard pet fee, travels in an approved carrier, and follows the same rules as any other in-cabin pet.

An ESA letter still protects housing rights under the Fair Housing Act when the person has a disability-related need for an assistance animal. That housing protection does not create air-travel access under the ACAA.

For Allegiant flights, the practical rule is simple. A trained service dog follows the service-animal process. An emotional support animal follows the pet policy.

Why ESAs lost in-cabin status

Before the DOT rule change, many travelers connected ESA letters with airline access. The current DOT framework uses a narrower air-travel definition: a service animal is a dog trained to perform disability-related tasks.

Comfort alone does not meet that task-training standard. A dog that calms a traveler through companionship alone travels as an ESA or pet, not as a service dog.

A dog trained to recognize and interrupt a psychiatric episode travels as a psychiatric service dog when it meets the service-dog requirements.

For a broader look at ESA air-travel status, you can check which airlines still allow emotional support animals.

Flying an ESA as a pet

An ESA travels on Allegiant as a pet when the animal meets the Allegiant pet policy. The animal rides in an approved carrier, stays inside the carrier, and travels under the pet fee.

Allegiant accepts domestic dogs and domestic cats as in-cabin pets on eligible routes. Pet owners need to check destination rules before booking, especially for international flights, international destinations, U.S. territories, and routes with special restrictions.

The pet remains fully inside the carrier in the airport terminal and onboard the aircraft. The carrier fits under the seat, and the animal stays enclosed throughout the trip.

Allegiant Pet Travel Basics

Allegiant’s live pet page is the best source for day-of-travel details. The basics below cover the current fee, pet carrier size, accepted animals, and key restrictions without replacing the airline’s own policy page.

Pet fees and carrier size

• As of June 22, 2026, Allegiant lists the pet-in-cabin fee as $50.00 per segment, per carrier. Pet fees are non-refundable on Allegiant Airlines.
• Each paid traveler travels with one pet carrier. Allegiant permits no more than two pets per carrier.
• As of June 22, 2026, Allegiant lists soft-sided pet carriers at a maximum of 18 inches long by 12 inches wide by 11 inches high when fully closed.
• As of June 22, 2026, Allegiant lists hard-sided pet carriers at a maximum of 17 inches long by 11 inches wide by 10.5 inches high when fully closed.
• The pet carrier counts toward the passenger’s two cabin items. A passenger traveling with a pet carrier chooses either a personal item or a paid carry-on bag as the second cabin item.

Which animals and breeds does Allegiant accept

• Allegiant accepts domestic dogs and domestic cats as small pets in the passenger cabin. Dogs and cats need to be at least eight weeks old.
• The pet needs to be harmless, non-disruptive, odorless, healthy enough for travel, not violent, not ill, and not in physical distress.
• Carrier fit matters for the pet’s comfort and safety. The pet needs enough room to stand and turn around inside the carrier. The animal’s body remains entirely inside the carrier, without touching or protruding from it.
• Allegiant does not transport animals as checked baggage or in the cargo hold under its pet policy. Large pets that do not fit Allegiant’s pet carrier requirements do not fit the pet-in-cabin path.
• Allegiant states that health certificates are not required for in-cabin pets under its current policy. Pet owners still need to review destination rules and conditions before travel.

Pet booking, check-in, and airport handling

• Pets traveling on Allegiant need to be added to the reservation. Pet owners handle this during booking or through the airline’s current reservation tools.
• Passengers traveling with pets do not sit in exit row or bulkhead seats. Allegiant also restricts pet carriers from aisle seats on Boeing aircraft because of foot-space limits.
• Pet owners check in with an Allegiant agent at the ticket counter or gate counter at least one hour before scheduled departure. The agent verifies the pet and carrier requirements before boarding.
• Pets traveling in the cabin stay inside the carrier at the airport and onboard. Failure to comply with carrier requirements creates a denied boarding risk or future travel restrictions.
• A pet carrier does not need to rely on “FAA approved” marketing language alone. The important point is Allegiant approval: leak-proof design, ventilation, correct size, and enough room for the pet to stand and turn around.

Service Dog vs ESA vs Pet on Allegiant

On Allegiant, the difference comes down to training, paperwork, and fee treatment.

Animal type	Cabin status	Paperwork	Cost
Trained service dog	Travels as a service animal under the ACAA when the dog meets DOT and Allegiant requirements.	DOT Service Animal Air Transportation Form; relief attestation for flight segments scheduled for eight hours or more when required.	Free under the service-animal path.
Psychiatric service dog	Travels as a service animal when task-trained for a psychiatric disability.	Same DOT forms as other service dogs. A PSD letter supports disability documentation but does not replace airline forms.	Free under the service-animal path.
ESA or pet	Travels as a pet when the animal meets the Allegiant pet policy.	Pet carrier and pet-policy compliance. ESAs do not receive ACAA service-animal status.	As of June 22, 2026, Allegiant lists $50.00 per segment, per carrier.

*Service-dog rules are based on the DOT Air Carrier Access Act service-animal rule and Allegiant’s current service-animal policy. Pet fee information is based on Allegiant’s optional-services and pet-policy pages, retrieved June 22, 2026.

Allegiant Pet Policy FAQs

Does Allegiant still allow emotional support animals?

Yes, Allegiant accepts emotional support animals as pets when they meet the airline’s pet policy. ESAs do not travel as free in-cabin service animals under the DOT air-travel rule.

What is the Allegiant service dog form?

The Allegiant service dog form is the U.S. DOT Service Animal Air Transportation Form. It covers the service dog’s health, behavior, and training.

What paperwork do I need for my service dog to fly Allegiant?

Allegiant requires the U.S. DOT Service Animal Air Transportation Form. For flight segments scheduled for eight hours or more, the DOT relief attestation applies when required.

How do I submit the Allegiant service dog form?

Allegiant directs service-dog travelers to the Open Doors Organization Service Animal Forms Portal. The airline also lists email and mail options for hard-copy submission. Allegiant asks for the form at least 48 hours before the scheduled departure.

Does a psychiatric service dog fly free on Allegiant?

Yes, a psychiatric service dog flies free on Allegiant when the dog is task-trained for a psychiatric disability and the handler completes the DOT service-animal process. A PSD letter supports disability documentation, but it does not replace the DOT forms.

Does a PSD letter replace the DOT service-animal form?

No. A PSD letter documents the psychiatric disability and disability-related need. Allegiant still requires the DOT service-animal forms for service-dog air travel.

How much does Allegiant charge for pets?

As of June 22, 2026, Allegiant lists the pet-in-cabin fee as $50.00 per segment, per carrier. The pet fee is non-refundable.

How strict is Allegiant with pet carriers?

Allegiant lists exact carrier dimensions and requires the pet to fit comfortably inside the carrier. The pet needs enough room to stand and turn around, and the animal’s body stays fully inside the carrier.

Does Allegiant require health certificates for pets?

Allegiant states that health certificates are not required for pets traveling in the cabin under its current pet policy.

Does Allegiant fly pets as checked baggage or in the cargo hold?

No. Allegiant does not transport animals as checked baggage or in the cargo hold under its pet policy.

Are pets allowed on international flights?

Allegiant’s pet policy covers eligible in-cabin pet travel within its listed domestic route rules. Travel to international destinations and U.S. territories does not accept all pets, so pet owners need to review the destination before booking.

What happens if my pet or service dog becomes disruptive?

A disruptive, aggressive, unsafe, ill, or unhealthy animal creates a denial risk. Allegiant reviews animal behavior, passenger safety, carrier fit, and documentation before travel continues.

What if I have questions before an Allegiant Air flight?

Contact Allegiant Air directly through the airline’s official contact page when a route, carrier requirement, form issue, or pet-policy detail affects an upcoming Allegiant Air flight.