Airport Roscommon Co is located in United States near the city of Houghton Lake. The international codes of Roscommon Co airport are ICAO: KHTL and IATA: HTL. Roscommon Co is located at latitude 44.3598 and longitude -84.6711. The elevation above sea level is 1150ft (351m). Local timezone at the airport is UTC/GMT -5:00 hours.