Does the frontier provide my pet enough attention? The only mode of transportation that Frontier Air supports for pets is in-cabin, according to the frontier pet policy. The type of aircraft, the dog's crate, their conduct, their health, and many other aspects affect whether they are allowed to travel in the cabin. Minors and unaccompanied pets are not permitted to fly alone. Pet owners may also bring a carry-on item or pay extra to bring a larger piece of carry-on luggage, in addition to the kennel.