Brown Field Municipal Airport — San Diego, United States

Brown Field Municipal Airport, identified by the code SDM, is located in the Otay Mesa area of San Diego, California, near the U.S.-Mexico border. Unlike major commercial airports, Brown Field primarily serves general aviation, flight training, and cargo operations rather than scheduled passenger airline service. It is one of San Diego's secondary airfields, complementing San Diego International Airport by handling smaller aircraft, corporate flights, and pilot instruction. The airport's proximity to the border makes it relevant for cross-border logistics and customs operations. Facilities include multiple runways capable of accommodating a range of aircraft sizes. SDM has also historically supported skydiving operations and aviation events, contributing to its reputation among Southern California's general aviation community.