Frontier Airlines Pet Policy: How to transport a pet 2026

Published in 2025 / Updated in 2026

Frontier is a “cabin-only” airline for pets. If your furry friend doesn’t fit under the seat, they’ll have to stay home and guard the couch. There is no cargo or checked baggage option for animals here!

In the Cabin: A Tiny Menagerie

Frontier is one of the few U.S. airlines that allows more than just cats and dogs.

Who’s Invited? Dogs, cats, rabbits, guinea pigs, hamsters, and small household birds on domestic U.S. flights.
International Alert: Only dogs and cats are allowed on international flights (typically to/from Mexico and the Dominican Republic).
The Cost: A flat fee of $99 USD each way.
- Pro-Tip: If you are a FRONTIER Miles Platinum or Diamond Elite member, your pet flies for FREE!
Number of Pets: Frontier allows up to 10 pets per flight, so book early before the cabin reaches “max fluff.”

The “Apartment” (Carrier) Specs

Your pet’s carrier is considered your “personal item” or “carry-on.” You can still bring a bag, but standard baggage fees will apply.

Maximum Dimensions: Hard-sided: 18″ L x 14″ W x 8″ H.
- Soft-sided: 18″ L x 14″ W x 11″ H (Recommended!).
The Comfort Rule: Your pet must be able to stand, turn around, and lie down naturally. If they’re looking like a canned sardine, the gate agent may deny boarding.

Approved IATA Containers for Dogs and Cats

The “Paws-port” Paperwork

Age Limit: All pets must be at least 8 weeks old.
Health Certificates: For domestic flights within the U.S., Frontier does not require a health certificate. However, the state you are landing in might! (Always check local state laws).
International Travel: You will need a health certificate dated within a specific window (e.g., 5 days for Mexico) and proof of Rabies vaccination for pets over 3 months old.

🛑 The “No-Fly” List: Strict Restrictions

Frontier has a clear list of who cannot join the party:

Large Birds: No parrots, macaws, cockatoos, or birds of prey.
Rodents (The Wild Kind): Mice, rats, squirrels, and beavers are a no-go.
The “Exotics”: Ferrets, reptiles (snakes/lizards), amphibians, spiders, and insects are strictly prohibited.
Aggressive Animals: If your pet is disruptive or “fragrant,” Frontier can refuse to fly them.

💡 Expert Tips for a “Bark-tacular” Journey

The Seat Map: You cannot sit in Row 1 or an exit row if you have a pet. Try to book a seat with extra legroom if you have a larger carrier to give yourself some foot space.
No Snacks at Altitude: Frontier recommends not giving your pet food or water during the flight to avoid motion sickness and “accidents” in the bag.
Sedation: The airline strongly advises against sedating pets. High altitudes and sedatives don’t mix well!
The TSA Dance: When you hit security, you’ll have to take your pet out of the carrier and carry them through the metal detector while the bag goes through the X-ray. Make sure they have a secure harness!

Read our complete guide to learn how to transport a rabbit, rodent or exotic pet to another country.

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