Clear Lake City was the former location of the Clear Lake City STOLport, a private airport constructed and owned by Houston Metro Airlines which was located on State Highway 3 just south of Ellington Field. This commuter airline operated up to 22 roundtrip flights every weekday in the mid 1970s between Clear Lake City (CLC) and Houston Intercontinental Airport (IAH) with de Havilland DHC-6 Twin Otter STOL (short take off and landing) turboprop aircraft. Metro Airlines eventually ceased operations due to financial challenges. The Clear Lake City STOLport was subsequently abandoned and then demolished. There is no trace of this pioneering airfield to be found at the present time, and the land has been developed for commercial and residential use.