Are there nonstop flights from Mendoza (MDZ) to Porto Alegre (POA)?

No. The fastest connection is via Santiago, about 3h 27m of total flying time.

What is the fastest connection from Mendoza (MDZ) to Porto Alegre (POA)?

via Santiago ≈ 3h 27m, via San Carlos de Bariloche ≈ 4h 41m, via Campinas ≈ 4h 50m (estimated flying time, excluding layovers).

Governor Francisco Gabrielli International Airport (MDZ) to Porto Alegre-Salgado Filho International Airport (POA)・1,700 km

No nonstop flights. The fastest connection is via Santiago (SCL), about 3h 27m 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.