When flying from Springfield to Sao Paulo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Located just 5.3 mi from the city center, Springfield-Branson is the airport most travelers will use when flying to Sao Paulo from Springfield. Booking flights from Springfield-Branson (SGF) to Sao Paulo should be relatively easy as there are 0 daily outbound flights to Sao Paulo from 0 different airlines.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Springfield-Branson Airport to Sao Paulo Guarulhos Intl Airport flight would often be abbreviated as a SGF to GRU flight. Sao Paulo Congonhas Airport (CGH), Sao Paulo Viracopos Airport (VCP) are other airports near this flight route and their unique identifiers/IATA codes.