Fernando! There is a remarkable airline VUELING AIRLINES. I to it flied many times. And it is inexpensive. As for Barcelona. It is the most beautiful solar beautiful city (after Rome). Is on the sea, there are beaches, there are museums, there are oceanariums, architecture. I showed care, at visit. But it concerns ANY city. It is possible and to run in Moscow into malefactors, thieves.
It isn't necessary to take a jaundiced view so to Barcelona!