Which airport code is assigned to Madison?

The airport code assigned to Madison is MSN. This code follows the standard convention for identifying airports in the United States, where code assignments are typically three letters derived from the primary name or location of the airport. Madison Truax Field, located in Madison, Wisconsin, is represented by the letters MSN, making it recognizable in travel itineraries and aviation contexts. The other codes correspond to different airports: ISP is for Long Island MacArthur Airport, LGA is for LaGuardia Airport in New York City, and GRR represents Gerald R. Ford International Airport in Grand Rapids, Michigan. Knowing the correct airport code can help travelers efficiently navigate flight information and ensure their itineraries are accurate.