Flights to Barcelona land at El-Prat Airport. The airport is connected to Barcelona’s city center by a 20 minute journey on the R2 train, which costs just €2.15 per ticket. Alternatively, travelers can also take the number 46 bus to Pl. Espanya, where the convergence of metro lines 1 and 3 make it easy to reach most destinations in Barcelona. If your flight to Barcelona arrives at night, the N16 and N17 night buses connect Barcelona El-Prat’s terminals with the city center. Taxis are also available in front of each terminal 24 hours a day. Taxis take approximately 20-40 minutes to reach Barcelona’s city center, while prices vary depending upon traffic, luggage, and final destination.
Trains to Barcelona arrive at Estacio de Sants train station which is connected to Barcelona’s metro system. Metro lines 3 and 5 connect Estacio de Sants to Barcelona’s city center. the H7, V7, 27, 32, 78, 109 and 115 buses also connect the train station with the city center. Short distance Rodalies trains also connect various stations in Barcelona and are often the most convenient way to travel around the city.
Bus Buses to Barcelona arrive at Estacio del Nord approximately 2 kilometers or a 20 minute walk away from the city center. Alternatively, the Arc de Triomf metro station’s L1 line and the number 54 bus connect Estacio del Nord with Barcelona’s city center. Rodalies trains R1, R3 and R5 also depart from the bus station for the city center approximately every 12 minutes.
Summers in Barcelona can reach heights of 40 degrees, but you often don't feel the severity of the heat due to its coastal location. Winters are also pretty mild and don't get as cold as the UK
December is the cheapest month to fly to Barcelona, however given the amount of budget airlines flying to the city providing you book well enough in advance you can alwasy find cheap deals.
Go and have a drink at the bunkers from the Spanish Civil War, which overlook the city and provide an amazing view.