Generally there are different options:
- At ticket offices in the bus stations of Termibus (Bilbo/Bilbao), Vitoria-Gasteiz and Pamplona/Iruña. See information on points of sale
- At ticket vending machines situated in Termibus in Bilbao (3 machines) and the bus station of Vitoria-Gasteiz. See how to buy a ticket from a vending machine
- On the webpage www.autobuseslaunion.com/en/
- On the bus itself generally at stops where there is no ticket office or vending machine. In case of doubt consult the driving staff.