When visiting Barcelona you need to decide which travel ticket option best suits your needs for getting around the city. There are several options to choose from but lets just look at the T-10 and the Hola BCN!
The Hola BCN! ticket is available for either 2, 3, 4, or 5 days and can be used by only one person. These are full 24 hour days so if you buy a 2 day ticket and you make your first journey at 10:00pm in the evening, say after arriving on your flight to the airport, your ticket will not expire at midnight on the next day but at 9:59pm two days later. This ticket is valid on all Metro lines, buses, trams, local RENFE trains and the funicular railways in the Zone 1. It is also valid for your journey from and to the airport. This ticket costs about €7 a day depending on how many days you choose.