What is the airport code for Harrisburg, Pennsylvania?

The airport code for Harrisburg, Pennsylvania, is MDT, which stands for Harrisburg International Airport. The three-letter codes used to identify airports, known as IATA airport codes, are standardized abbreviations derived typically from the city names, airport names, or other distinguishing characteristics of the airports. In this case, MDT effectively represents the city of Harrisburg by combining letters that are easy to remember and relate to the geographic location.

The choices that are not correct come from airports located in completely different regions and have entirely different purposes. MEX is the code for Mexico City International Airport, which serves Mexico's capital. MEM stands for Memphis International Airport, located in Memphis, Tennessee, an entirely different state and region. Lastly, LIH designates Lihue Airport in Hawaii, again far removed geographically and contextually from Harrisburg. Recognizing the distinctive IATA codes and their associations with specific locations is essential for understanding airport codes and their usages.