Monticello Airport (IATA: MXC, FAA LID: U64) is a city-owned, public-use airport located three nautical miles (6 km) north of the central business district of Monticello, a city in San Juan County, Utah, United States. The airport's current site on the east side of U.S. Route 191 opened in 2011, replacing the former Monticello Airport (FAA: U43) which was located on the west side of the highway.