Brazil's air regulator approved almost 2000 new flights on Thursday, which it hopes will meet demand during soccer's World Cup and prevent fares soaring.
"From here on, there will be more flights offered, and we hope there will be a reduction in prices," said Marcelo Guaranys, president of ANAC, Brazil's civil aviation authority.
The 1,973 new flights will be operated primarily by Brazil's four main carriers - TAM, Gol, Avianca and Azul. Almost all the flights are domestic routes.
Avianca and Azul have already announced they will cap one-way fares at 999 reals ($A483) during the World Cup. TAM and Gol have not announced caps.
The World Cup opens on June 12 in Sao Paulo and ends on July 13 in Rio de Janeiro.
Guaranys said ANAC would watch ticket prices during the World Cup.
Brazil's airline industry has come under pressure to control fares from the government, which has threatened to intervene if price increases are seen as gouging customers.
The government has made similar warnings to hotels, some of which have increased prices as much as five times.
Brazil's tourist agency Embratur estimates up to 600,000 foreign fans will come for the World Cup and predicts more than three-million local tourists will travel to matches in 12 cities across the country.
Despite the fare caps and added flights, fans could still face long delays and bottlenecks going through many airports that are outdated.