Never use United airlines if you have a dog. They're awful and indifferent to an animals suffering and death. No person who loves animals should fly United.
First off your pets anokulation report cannot be no older than 30 days old. The animal has to have a pet carrier and I think cannot weigh over 60 pounds. The other Thing is there is a fee for transporting petd. To answer your initial question Charleston airport is pet friendly. P.s I used to wok for an airline.
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