NBO and ADD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. NBO to ADD refers to a flight route from Nairobi Jomo Kenyatta Intl Airport to Addis Ababa Bole Airport. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Nairobi Wilson Airport (WIL), Nanyuki Airport (NYK), Amboseli Airport (ASV).