Which airport code corresponds to Milan, Italy, effective from May 1, 2008?

The airport code that corresponds to Milan, Italy, effective from May 1, 2008, is MXP. This code specifically identifies Malpensa Airport, which is one of the main international airports serving Milan and is the largest in the region. MXP is crucial for travelers flying to and from Milan, as it facilitates a significant number of international flights.

The other choices do not represent airports in Milan. For instance, MAF is the airport code for Midland International Air and Space Port in Texas, MKE is the code for Milwaukee's General Mitchell International Airport in Wisconsin, and MTY refers to General Mariano Escobedo International Airport located in Monterrey, Mexico. Each of these codes is associated with distinct geographic locations, highlighting why MXP is the correct choice for identifying Milan's airport.