Houston County Airport (ICAO: KCHU, FAA LID: CHU) is a public use airport located three miles (5 km) south of the central business district of Caledonia, a city in Houston County, Minnesota, United States. It is owned by Houston County. It serves general aviation for Caledonia and surrounding towns including Spring Grove and Houston. There is no scheduled air service.
Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, Houston County Airport is assigned CHU by the FAA but has no designation from the IATA (which assigned CHU to Chuathbaluk Airport in Chuathbaluk, Alaska).  
Facilities and aircraft
Houston County Airport covers an area of 52 acres (21 ha) which contains one asphalt paved runway, 13/31, measuring 3,499 by 77 feet (1,066 m × 23 m).
For the 12-month period ending May 31, 2006, the airport had 3,500 aircraft operations, 100% of which are general aviation.