Ann Arbor Municipal Airport (IATA: ARB, ICAO: KARB, FAA LID: ARB) is a general aviation airport in Washtenaw County, Michigan, United States. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017 to 2021, in which it is categorized as a regional general aviation facility. As of 2013, the airport's annual budget was around $800,000, which the city makes by renting hangars and imposing fuel surcharges; the city does not allocate funds to the airport.