Petaddon
Guides and gear for exotic and small pets
Frontier charges $149 each way for a pet in the cabin and accepts more kinds of animals than most US airlines: dogs, cats, rabbits, guinea pigs, hamsters and small household birds. Pets fly only on US flights, ride in a carrier under the seat, and can’t be checked or shipped as cargo.
At a glance
Frontier Airlines pet policy
Last checked October 23, 2026 against the airline's own policy pages.
| Pets in the cabin | Dogs, cats, rabbits, guinea pigs, hamsters and small household birds (US flights) |
|---|---|
| Cabin pet fee | $149 each way$149 per pet, per one-way trip, non-refundable. |
| Soft carrier (max) | 18 x 14 x 11 in (recommended) |
| Hard carrier (max) | 18 x 14 x 8 in |
| Pets per passenger | 1 pet per passenger, one adult dog or cat per carrier. You can also bring a personal item or a carry-on (carry-on fees apply). |
| Pets per flight | Not published |
| Minimum age | 8 weeks |
| Weight limit (cabin) | No set limit: the pet must fit in the carrier under the seat |
| Pets in the hold (checked) | NoFrontier doesn't allow checked pets. |
| Pet cargo | NoNo pet cargo service. |
| Large dogs | No. Only pets that fit in an under-seat carrier. |
| Snub-nosed breeds | No breed bans in the cabin. |
| International and Hawaii | No pets on international flights: only service dogs that meet CDC rules. |
| Service and support animals | Trained service dogs fly free. Emotional support animals fly as pets. |
Sources: Frontier: Pets onboard · Frontier: Optional services
Airline rules change, sometimes without notice. Confirm with the airline when you book, and check the entry rules for your destination.
Contents
show
How much does Frontier charge for pets?
- In the cabin: $149 per pet, each way.
- Round trip: $298 per pet.
- Trained service dogs: free.
The fee is non-refundable. Because it is charged per pet, it costs more than Allegiant’s $50 or Alaska’s $100, and about the same as the $150 that Delta, United, American and JetBlue charge.
Frontier pet carrier size
- Soft-sided carrier (recommended): up to 18 x 14 x 11 inches.
- Hard-sided carrier: up to 18 x 14 x 8 inches.
The 8-inch height limit rules out most hard carriers for anything bigger than a cat, so Frontier recommends soft-sided. The carrier goes under the seat in front of you, and your pet stays inside for the whole flight.
Frontier pet rules at a glance
- Species: dogs, cats, rabbits, guinea pigs, hamsters and small household birds.
- Minimum age: 8 weeks.
- Per passenger: one pet. Each carrier holds one adult dog or cat.
- Bags: the pet carrier doesn’t use up your personal item. You can still bring a personal item, and a carry-on if you pay for one.
Frontier is one of the few airlines that takes rabbits, guinea pigs and hamsters in the cabin, which makes it a practical choice for small-pet owners moving within the US. Bring the same carrier and bedding your pet uses at home, and pack a small water source that won’t spill.
No international or checked pets
Frontier carries pets only on flights within the US. On international routes, it accepts only trained service dogs that meet CDC dog import rules. It also doesn’t accept pets as checked baggage or cargo. For a bigger dog, look at Alaska‘s baggage compartment, cargo on Delta or American, or a pet transport company.
Service dogs and emotional support animals
Trained service dogs fly free. Emotional support animals count as pets, so they pay the $149 fee and ride in an approved carrier.
How Frontier compares
Frontier’s species list is its strongest point, and its fee is its weakest. A cat flies cheaper on Allegiant or Alaska, but a rabbit or guinea pig has few other options. See the full pet-friendly airlines comparison, or check whether your pet fits under the seat with the cabin or cargo checker.
Frontier pet policy FAQ
How much is the Frontier pet fee?
$149 per pet, each way. It is non-refundable.
What size carrier does Frontier allow?
A soft-sided carrier up to 18 x 14 x 11 inches, or a hard-sided carrier up to 18 x 14 x 8 inches.
Does Frontier allow rabbits and guinea pigs?
Yes. Frontier accepts dogs, cats, rabbits, guinea pigs, hamsters and small household birds in the cabin on US flights.
Can I check my dog on Frontier?
No. Frontier doesn’t accept checked pets or pet cargo.
Can I bring my pet on a Frontier international flight?
No. Only trained service dogs can fly on Frontier’s international routes.
More airline pet policies: Delta · Southwest · United · American Airlines · Alaska · Allegiant · JetBlue · Hawaiian · Air Canada · Lufthansa · compare every airline
