Decatur Municipal Airport (ICAO: KLUD, FAA LID: LUD) is a city-owned public airport two miles (3.7 km) north of Decatur, in Wise County, Texas.Most U.S. airports use the same three-letter location identifier for the FAA and IATA, but this airport is assigned LUD by the FAA and has no IATA designation (IATA assigned LUD to Lüderitz Airport in Namibia).