Posadas’ bus terminal is 5km south of town and can be reached from downtown by bus 8, 15 (from Junín), 21 or 24 (AR$12). It costs about AR$150 in a taxi. From the bus terminal, catch local buses out in front or from the adjacent metropolitan terminal.
Bus 28 (AR$12) goes to the airport from San Lorenzo (between La Rioja and Entre Ríos). A remise costs around AR$250.
Buses 7 and 12 (AR$12) go to the Apeadero Posadas station.