Do you want to take a Frontier flight with your animal companion? The Frontier pet in cabin policies are to be followed since we always want to make sure our pets are safe before we travel. Pet animals including dogs, cats, bunnies, guinea pigs, hamsters, and small family birds are allowed on domestic flights within the US for a one-way ticket fee. Additionally, for safety reasons, pets must be transported in a travel pet carrier that has been authorised by the FAA. The Frontier Airlines official website lists the size and weight restrictions for animals.