One of the first things to do when visiting Barcelona is to buy a T-Casualintegrated transport ticket. This ticket will give you access to all the city’s buses, metro trains, local trains, trams, night buses and funiculars (but not the cable-cars up to Montjüic and across the bay, and the privately run funicular up to Tibidabo and the Aerobus).
Due to covid restrictions bus drivers cannot now sell tickets.
A single journey by bus, metro or tram is € 2.40 – using a T-Casual means the cost of a journey is only €1.14– bargain.
If travelling as a couple, group or family, you may want buy a T-Familiar — €10 — 8 journey multi-person ticket which means 8 people can use it once or 2 people can use it four times ,and every variation in between.
You can use these tickets as many times as you need within a one and a quarter hour period within Zone One and it counts as a single journey. Though be aware that once you leave the metro, when you re-enter it will count as a new journey.
In practice what this means is you can catch a barri bus (small local bus) to connect with a regular bus, travel across the city, jump on a tram or train to a metro station and take the metro to your final destination, and it all counts as a single journey.
Some busses now have FREE wi-fi and phone charging points.
Use the bus. You’ll get to see a lot more and rub shoulders with locals.