Frontier Airlines Pet Policy for Dogs in 2026
See Frontier’s current dog travel rules, pet fees, carrier size limits, and booking steps before you fly.
Frontier Airlines Pet Policy Overview
Frontier allows small domesticated dogs in the cabin on eligible U.S. flights, but does not accept checked pets. Your dog must remain inside an approved carrier that fits under the seat in front of you.
Frontier recommends soft-sided carriers. The carrier must be large enough for your dog to stand, turn around, and lie down naturally, and your dog must stay inside the travel container at all times. Frontier does not transport pets as checked baggage.
Last updated: 2026-03-25
How to Book Your Dog on Frontier Airlines
- Confirm your trip is eligible before you book. Frontier allows pets on flights within the United States, while international Frontier flights allow only service dogs. 2. Check your dog’s age and size. Your dog must be at least 8 weeks old and small enough to stay comfortably inside a carrier that fits under the seat in front of you. 3. Choose an approved carrier before purchase. Frontier’s maximum in-cabin carrier size is 18 x 14 x 8 inches for hard-sided carriers or 18 x 14 x 11 inches for soft-sided carriers, and soft-sided carriers are recommended. 4. Add your pet during booking by selecting Cabin Pet in the Passenger Info section. If you already booked, open Manage Trip on Frontier’s website and select Add Pet in Cabin. 5. Budget for the pet fee. Frontier charges $99 per pet, per direction, and the fee is non-refundable. 6. Review seat and baggage planning. Your dog must remain in the carrier at all times, and you may still bring one personal item or one carry-on bag in addition to the pet, with standard carry-on fees applying if relevant. 7. Arrive early on travel day with your dog already acclimated to the carrier. Make sure the carrier fits under the seat and that your dog can stand, turn, and lie down naturally inside it. 8. Keep your dog in the carrier throughout the airport and flight unless TSA screening requires temporary removal at security. 9. If your itinerary changes, re-check pet eligibility in Manage Trip because pet space can be limited and Frontier does not offer checked pet service as a backup option.
Frontier Airlines vs Other Airlines
| Feature | Frontier Airlines | American Airlines | Delta Air Lines |
|---|---|---|---|
| In-Cabin Fee | $99 per pet, per direction | $150 per kennel, each way | $150 each way within U.S./Canada/Puerto Rico/U.S. Virgin Islands for tickets issued on/after April 8, 2025 |
| Cargo Fee | Not offered; checked pets are not allowed | Varies via American PetEmbark cargo; checked pets only for active-duty military and State Department personnel on official orders | Cargo/checked options vary; Delta notes pets may need to travel as cargo on restricted routes and checked-pet fees shown on military pet travel pages are generally $200 each way where applicable |
| Weight Limit | No published combined weight limit; pet must fit comfortably in carrier under seat | Carry-on pets must fit under the seat; checked pets up to 100 lbs combined pet and kennel for eligible checked-pet travel | No published combined in-cabin weight limit; pet must fit comfortably in kennel under seat |
| Carrier Size | Hard-sided 18 x 14 x 8 in; soft-sided 18 x 14 x 11 in | Must fit under seat; airline does not publish one universal in-cabin kennel dimension on the main pet page | Delta recommends soft-sided kennel up to 18 x 11 x 11 in |
| Breeds Restricted | No in-cabin dog breed list published; disruptive animals may be refused | Brachycephalic and certain other breeds restricted for checked pets; carry-on dogs must meet size and behavior rules | Snub-nosed dogs restricted for checked baggage/certain cargo scenarios; in-cabin pets must meet route and size rules |
| Booking Method | Add Cabin Pet during booking or in Manage Trip | Contact American if needed; pay pet fee at airport or travel center, with carry-on pet subject to route and capacity limits | Contact Delta Reservations as soon as possible after booking to reserve pet space |
Frequently Asked Questions
Can my dog fly in the cabin on Frontier Airlines?
Yes. Frontier allows domesticated dogs in the cabin on eligible flights within the United States, as long as the dog fits in an approved carrier under the seat and remains inside the carrier during travel.
Does Frontier Airlines allow dogs as checked baggage or cargo?
No. Frontier states that checked pets are not allowed, so pet dogs must travel in the cabin if they meet the airline’s requirements.
How much does Frontier charge to fly with a dog?
Frontier’s pet charge is $99 per pet, per direction, and the fee is non-refundable.
What size pet carrier does Frontier allow?
Frontier allows hard-sided carriers up to 18 x 14 x 8 inches and soft-sided carriers up to 18 x 14 x 11 inches. Soft-sided carriers are recommended.
Is there a weight limit for dogs on Frontier?
Frontier does not publish a specific combined weight limit for in-cabin pets on its pet FAQ. Instead, your dog must be able to stand, turn around, and lie down naturally in the carrier, and the carrier must fit under the seat.
How do I add my dog to a Frontier reservation?
You can add a pet while booking by selecting Cabin Pet in the Passenger Info section. If you already booked, go to Manage Trip and choose Add Pet in Cabin.
Can I bring a carry-on bag if I’m flying with a dog on Frontier?
Yes. Frontier says you may bring one personal item or a carry-on in addition to your pet, though standard carry-on fees still apply where relevant.
Are dogs allowed on Frontier international flights?
Pet dogs are not accepted on Frontier international flights. Frontier says only service dogs are allowed internationally, subject to CDC requirements.