The cheapest flight a Manaus you can get by boooking 32 days before departure.
The most popular airlines on the route Curitiba - Manaus: LATAM (JJ), GOL (G3), Azul Linhas Aéreas Brasileiras (AD).
The cheapest flights you can book on the route Afonso Pena (CWB) - Eduardo Gomes (MAO).
There is no direct flight on the route desde Curitiba a Manaus
The shortest flights with change last about 6h 1min.