Natchitoches Regional Airport (ICAO: KIER, FAA LID: IER) is a city-owned public-use airport located two nautical miles (4 km) south of the central business district of Natchitoches, a parish seat of Natchitoches Parish, Louisiana, United States.

[1] Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, Natchitoches Regional Airport is assigned IER by the FAA but has no designation from the IATA.

Natchitoches Regional Airport covers an area of 205 acres (83 ha) at an elevation of 121 feet (37 m) above mean sea level.

[1] For the 12-month period ending July 10, 2008, the airport had 15,715 aircraft operations, an average of 43 per day: 98% general aviation, 1% air taxi and 1% military.

At that time there were 45 aircraft based at this airport: 82% single-engine, 9% multi-engine, 2% jet, 4% helicopter and 2% ultralight.