The bus to the Poas volcano only has a schedule, 7:30 am. You can also take the next one at the station that is 200 meters east. Ask for "Sabanilla buses" and then the one that goes to the volcano. It leaves at 9:30 am and returns at 12:30 pm.
A little wider is facilitated the arrival of several units, slow and very heavy, the narrow streets of the city hinder fast access, during peak hours it is more difficult and slower, old and deteriorated units are slower, modern units are urgent of great capacity, the rains make difficult the service to the client by the form of the premises, much to improve and it can be extended, remodeled for a quality service. Security is terrible, nowadays the cameras help a lot.
Good buses
Very Central and easy to find. You can buy the Tickets to poas from the driver. The Bus is comfortable. Just that there are not many years to sit down at the Station while waiting that's all.
Un muy buen servicio de autobús, rápido, cómodo y seguro.