Iberia's Western Hemisphere routes in early 2006 showing, to a fault, its reliance on American Airlines to compliment its transatlantic system, particularly the radiating spokes out of Miami and Chicago. Its surprising that Iberia does not have more US destinations: nothing on the west coast, no service to Washington. Service to Boston's Logan airport has commenced since this time. Its Latin American links are proficient, but not over-abundant.
Over all, this cartography suffers from an extreme over-inclusiveness of code-share routes from American Airlines. This is further complicated by Iberia's historic base at Miami, which facilitated onward connections in Latin America. Its hard to discern among all these red lines just what IB metal serves which cities.