What city does the airport code BMI represent?

The airport code BMI stands for Bloomington, Illinois. This designation is part of the standard airport identification system used internationally, where each airport is assigned a unique three-letter code to simplify communication and documentation. Bloomington, situated in Central Illinois, is served by the Central Illinois Regional Airport (BMI), which accommodates both domestic and regional flights.

Understanding airport codes can involve familiarity with different city names and their corresponding airports, as such data is critical for navigation and travel logistics. Other options presented, while they refer to real cities and their respective airports, do not share the same airport code as Bloomington, Illinois. For example, Boise, Idaho's airport code is BOI; Birmingham, Alabama is BHM; and Bismarck, North Dakota is BIS. This serves to reinforce the uniqueness of the airport code system, which ensures there is no overlap in codes assigned to different airports within the United States or globally.