I want to go to Barcelona (Spain), but I wonder if it would be cheaper to travel to any other destination within Europe and take one of those cheap inter-Europe flights? Also I wonder where is the best place to get airplane tickets? I want to go to Barcelona (Spain), but I wonder if it would be cheaper to travel to any other destination within Europe and take one of those cheap inter-Europe flights? Also I wonder where is the best place to get airplane tickets? (departing from San Francisco)