Are there nonstop flights from São Paulo (GRU) to Toronto (YTZ)?

No. The fastest connection is via Washington, about 10h 38m of total flying time.

What is the fastest connection from São Paulo (GRU) to Toronto (YTZ)?

via Washington ≈ 10h 38m, via Newark ≈ 10h 40m, via Boston ≈ 10h 55m (estimated flying time, excluding layovers).

São Paulo/Guarulhos–Governor André Franco Montoro International Airport (GRU) to Billy Bishop Toronto City Airport (YTZ)・8,179 km

No nonstop flights. The fastest connection is via Washington (IAD), about 10h 38m of flying time (layover not included).

None.

5 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.