An en dash is used to hold words together instead of your standard hyphen, which usually does the trick just fine, when one is connecting a multiword proper noun to another multiword proper noun or to pretty much anything else. What the heck does that mean? It means this: a Meryl Streep–Robert De Niro comedy a New York–to–Chicago flight a World War II–era plane a Pulitzer Prize–winning play Basically, that which you’re connecting needs a smidgen more connecting than can be accomplished with a hyphen.
