Equine.com listing of horses for sale in Arizona. Arizona's climate makes the state a much sought after winter destination for equine enthusiasts. If you're looking for horses for sale in Phoenix, Flagstaff or Tucson, check out our classified ads. We have the best horses for sale in AZ. Arizona boasts the annual Scottsdale Arabian Show, nationally renowned WestWorld equestrian center, and the La Fiesta de los Vaqueros Tucson Rodeo.