You will need an authorised airline pet carrier if your dog or cat satisfies the standards stated in Alaska Airlines' pet policy to travel in-cabin. The carrier has to have a waterproof bottom, enough room for your pet to turn around and stand up, a secure fastening system, and enough ventilation.Pets Welcome: Household birds, cats, and small dogs. Pets need to be tidy and well-manner... https://sites.google.com/view/alaska-airlines-pet-policy-1-7/home