What airport code corresponds to Madison, Wisconsin?

The airport code that corresponds to Madison, Wisconsin, is MSN. This three-letter code is designated for the Dane County Regional Airport, which serves the city of Madison and the surrounding areas. Each airport in the United States has a unique code assigned by the International Air Transport Association (IATA) to help identify airports easily.

In this case, MSN is widely recognized within the aviation community and by travelers as the identifier for Madison's airport, making it an established part of travel itineraries and flight booking systems. This provides clarity in communications related to air travel and assists in avoiding confusion with other airports. The other options do not correspond to Madison, Wisconsin, as they are codes for different locations entirely.