St. Catharines/Niagara District Airport, (IATA: YCM, ICAO: CYSN), is located in Niagara-On-The-Lake, Ontario, Canada, on Niagara Stone Road at Airport Road , just north of the Queen Elizabeth Way and east of the City of St. Catharines. The airport has no scheduled passenger services, despite being the closest sizeable Canadian airport to Niagara Falls.
The airport is classified as an airport of entry by NAV CANADA and is staffed by the Canada Border Services Agency. CBSA officers at this airport currently can handle general aviation aircraft only, with no more than 15 passengers.
The airport primarily serves general aviation aircraft, but it is not unusual to see chartered aircraft delivering passengers to waiting limousines for a ride to the Niagara Fallsview Casino Resort or other local attractions. In the past, the airport has also hosted delivery aircraft bringing rush order parts for the nearby General Motors plants.
The airport is home base for the Civil Air Rescue Emergency Service (CARES) Niagara, Unit #11 of Ontario Civil Air Search And Rescue Association (CASARA).