BSB stands for Brasilia Airport, while GIG stands for Rio de Janeiro–Galeão 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. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Rio de Janeiro Santos Dumont Airport (SDU).