The ICAO Airport Code is a four-letter alphanumeric code assigned to each airport around the world by the International Civil Aviation Organization. These codes help identify airports in a standardized way, facilitating air traffic control and flight operations. For example, the code for Los Angeles International Airport is KLAX. Unlike the three-letter IATA Airport Code, which is commonly used by travelers and airlines, the ICAO code is primarily used for aviation purposes. The first letter of the ICAO code typically represents the region or country, while the remaining letters specify the individual airport.