Frontier Airlines Pet Policy (2026): Fees, Carrier Sizes and Rules
Frontier takes small pets in the cabin on flights within the US for $149 per pet, each way. The fee is non-refundable. Frontier doesn’t carry pets in the cargo hold, and only service dogs can fly on its international flights.
Last checked against Frontier’s own pages on 1 October 2026: Pets onboard, Optional services and Special services. Airlines change their rules, so confirm with Frontier before you book.
Frontier pet policy at a glance
| Rule | What Frontier says |
|---|---|
| Pet charge | $149 per pet, per direction, non-refundable |
| Which animals | Domesticated dogs, cats, rabbits, guinea pigs, hamsters and small household birds |
| Where | In the cabin, on flights within the US |
| International flights | Service dogs only |
| Minimum age | 8 weeks |
| Pets per passenger | One |
| Hard-sided carrier, maximum | 18 x 14 x 8 inches |
| Soft-sided carrier, maximum (recommended) | 18 x 14 x 11 inches |
| Cargo or checked pets | Not available |
Can my dog fly in the cabin on Frontier?
Yes, on flights within the US, if your dog is at least 8 weeks old and fits in a carrier under the seat in front of you. Each passenger can bring one pet, and it has to stay in its travel container at all times.
Frontier accepts domesticated dogs, cats, rabbits, guinea pigs, hamsters and small household birds. It doesn’t accept large birds such as parrots and macaws, rodents including mice, rats and squirrels, beavers, ferrets, reptiles, amphibians, spiders or insects.
Can birds fly in the cabin on Frontier?
Yes, small household birds can fly in the cabin on flights within the US. Large birds such as parrots and macaws aren’t accepted, and no pets, birds included, can fly on Frontier’s international flights.
How much does it cost, and how do I book?
The pet charge is $149 per pet, per direction, and it’s non-refundable.
To add a pet, choose Cabin Pet in the Passenger Info section when you book. If you’ve already booked, go to Manage Trip and choose Add Pet in Cabin.
Besides your pet, you can bring one personal item or a carry-on. Frontier’s usual carry-on fees apply.
Carrier size rules
- Hard-sided carrier: up to 18 inches long, 14 inches wide and 8 inches high.
- Soft-sided carrier: up to 18 inches long, 14 inches wide and 11 inches high. Frontier recommends soft-sided carriers.
- The carrier must be large enough for your pet to stand, turn around and lie down naturally, and must fit under the seat in front of you.
- Only one adult dog or cat per carrier.
Can a large dog fly on Frontier?
No. Frontier doesn’t transport pets in the cargo hold and doesn’t accept checked pets, so a dog that doesn’t fit in an under-seat carrier can’t fly as a pet.
International flights
Only service dogs are allowed on Frontier’s international flights, and they must meet CDC requirements. Pets can’t fly internationally with Frontier.
Service dogs on Frontier
- Frontier accepts only dogs as trained service animals, including fully trained psychiatric service dogs.
- It doesn’t recognize comfort animals, companionship animals or service animals in training as service animals. If an animal doesn’t qualify, it may be able to travel under the pet policy for the fee.
- The dog must be at least 4 months old.
- Each passenger with a disability can travel with up to two service animals.
- Form: complete the DOT Service Animal Air Transportation Form. If you booked more than 48 hours before travel, submit it no later than 48 hours before. If you booked later than that, hand it to a customer service agent at the airport. Bring a copy with you either way.
- The dog must be on a harness, leash or tether and under your control in the airport and on the plane.
- You can’t sit in an emergency exit row. The dog sits on the floor or on your lap (if it’s no larger than a child under two), and can’t extend into the aisle, take an empty seat or encroach on a neighbor’s space.
- A passenger traveling with a trained service dog can also bring one pet in the cabin, if both meet the requirements.
Quick answers
How much does Frontier charge for a pet?
$149 per pet, each way. It’s non-refundable.
Does Frontier allow birds in the cabin?
Yes, small household birds on US flights. Parrots, macaws and other large birds aren’t allowed.
What size pet carrier does Frontier allow?
Soft-sided carriers up to 18 x 14 x 11 inches, or hard-sided carriers up to 18 x 14 x 8 inches.
Can I bring two pets on Frontier?
No. Each passenger can travel with one pet in the cabin, and only one adult dog or cat per carrier.
Does Frontier fly pets in cargo?
No. Pets only travel in the cabin, and checked pets aren’t allowed.