It is simple to go from Barcelona Airport to Sants. Simply take the RENFE train from Barcelona Airport to Estació de Sants (commonly known as Barcelona Sants station); the travel takes around 20 minutes. Alternatively, you may buy the T-Casual travel pass, which entitles you to ten trips on the Barcelona Metro system, and use the T-Casual card throughout your stay. The T-Casual is valid for one month after the end of the calendar year in which it was purchased. Another option is to acquire the Hola Barcelona Travel Pass, which allows you to utilise prepaid public transportation throughout your stay in Barcelona.