ATM (Autoritat del Transport Metropolità) integrated fare system
The fares are based on a system of concentric zones from Barcelona. The fare depends on the number of zones crossed and includes almost all urban and inter-urban services. The UAB is in zone 2C and you can find information about fares on the ATM website.
Most bus operators offering services to the UAB form part of the integrated fare system. The fares that do not form part of this system can bee consulted on the operators? websites.