Cincinnati Municipal Airport, more commonly known as Lunken Field, is located in Cincinnati, Ohio, USA. It is the oldest airport in the United States, having been in operation since 1925.

The airport was founded by the city of Cincinnati and was initially known as the Cincinnati Municipal Airport. It was renamed in honor of former Ohio Governor Frank B. Lunken, who had been instrumental in the establishment of the airport. Lunken served as the mayor of Cincinnati from 1914 to 1916, and was the first president of the airport's board of directors. The airport is still commonly referred to by this name, and the name is still featured prominently on the airport's logo.

The airport code for Lunken Field, LUK, was determined by the Federal Aviation Administration (FAA). The FAA assigns codes to airports based on their location. The code for Lunken Field was derived from the first three letters of the city's name, Cincinnati.

Today, Lunken Field is the primary general aviation airport for the Cincinnati metropolitan area. On average, the airport sees about 250 takeoffs and landings per day. It is served by several airlines, including Allegiant Air, American Airlines, Delta Air Lines, United Airlines, and Air Choice One. The airport also offers a range of services, including car rentals, fueling services, and flight instruction.

In addition to its commercial services, Lunken Field is also used by the Ohio National Guard and the United States Coast Guard. The airport also houses the Cincinnati Aviation Heritage Museum, which displays a variety of aircraft and aviation-related artifacts.

Lunken Field is a vital part of the Cincinnati community and has been in continuous operation since 1925. It has a long and rich history, and its airport code, LUK, is a reminder of the city's important role in its development. The airport continues to serve the Cincinnati area with a variety of services, and offers a number of flights each day.