Are there nonstop flights from São Paulo (CGH) to Buenos Aires (AEP)?

No. The fastest connection is via Curitiba, about 2h 58m of total flying time.

What is the fastest connection from São Paulo (CGH) to Buenos Aires (AEP)?

via Curitiba ≈ 2h 58m, via Porto Alegre ≈ 2h 59m, via Florianópolis ≈ 2h 59m (estimated flying time, excluding layovers).

Congonhas–Deputado Freitas Nobre Airport (CGH) to Aeroparque Jorge Newbery (AEP)・1,666 km

No nonstop flights. The fastest connection is via Curitiba (CWB), about 2h 58m of flying time (layover not included).

None.

6 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.