Are there nonstop flights from Porto Alegre (POA) to São Luís (SLZ)?

No. The fastest connection is via Brasília, about 4h 41m of total flying time.

What is the fastest connection from Porto Alegre (POA) to São Luís (SLZ)?

via Brasília ≈ 4h 41m, via Campinas ≈ 4h 44m, via São Paulo ≈ 4h 45m (estimated flying time, excluding layovers).

Porto Alegre-Salgado Filho International Airport (POA) to Marechal Cunha Machado International Airport (SLZ)・3,134 km

No nonstop flights. The fastest connection is via Brasília (BSB), about 4h 41m of flying time (layover not included).

None.

8 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.