What airport code corresponds to Milwaukee, Wisconsin?

The airport code that corresponds to Milwaukee, Wisconsin, is MKE. This code is designated for General Mitchell International Airport, which serves as the primary airport for the Milwaukee area. Airport codes are typically assigned based on the name of the city or the airport itself, often reflecting the first letter or syllable of significant words in the airport's name. In this case, MKE effectively represents "Milwaukee" with the combination of letters taken from the city's name.

The other options represent different airports: MOT stands for Minot International Airport in North Dakota, MLB is the code for Melbourne Orlando International Airport in Florida, and MSN refers to Madison Airport, also in Wisconsin. Each of these codes is tied to specific locations, making MKE the correct choice for Milwaukee.