CNS stands for Cairns Airport, while YYJ stands for Victoria Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Comox Airport (YQQ), Nanaimo Arpt Airport (YCD), Victoria Inner Harbour Seaplane Base Airport (YWH), Tofino Long Beach Airport (YAZ), Campbell River Airport (YBL) are other airports near this flight route and their unique identifiers/IATA codes.