Weiss Airport was a privately owned, public use airport located at 430 Rudder Ave in Fenton, Missouri in St. Louis County, Missouri, United States, approximately 13 nautical miles (24 km) WSW of St. Louis, Missouri. The airport closed on May 1, 1994.
Weiss Airport covered an area of at an elevation of 435 feet (132 m) above mean sea level. It had one asphalt paved runway designated 18/36 which measured 3,100 feet in length. It was the home of Midwest Air Service, and also served as a base for flight instruction.