Porto Alegre’s metro, Trensurb, has convenient stations at Estação Mercado (by the port), Estação Rodoviária (the next stop) and the airport (three stops beyond). For Cidade Baixa, catch bus T5/T51/T52 from the airport or 282, 282.1, 244, 255, 272 or 343 from the bus station (R$4.30).
Both the metro and the bus stop sit between Terminals 1 and 2 (closer to 2). The free Aeromóvel (Brazil's first atmospherically powered people mover) connects the metro with Terminal 1 every 10 to 15 minutes. Terminal 2 is accessed by a 400m footbridge from the metro.