Brazil Triangle (São Paulo–Rio–Brasília)

São Paulo → Rio de Janeiro / Brasília

Brazil's three most important cities form the country's highest-density domestic triangle. The São Paulo Congonhas (CGH)–Rio de Janeiro Santos Dumont (SDU) shuttle is one of South America's busiest city pairs, while Brasília anchors the political axis. LATAM, Gol, and Azul compete across all three legs.