St. Catharines/Niagara District Airport is a regional airport located in Niagara-on-the-Lake, Ontario, Canada. It is classified as an airport of entry by NAV CANADA and is staffed by the Canada Border Services Agency on a call out basis from the Queenston-Lewiston Bridge. CBSA officers at this airport currently can handle general aviation aircraft only, with no more than 15 passengers.

RCAF Station Guelph was a Second World War British Commonwealth Air Training Plan (BCATP) station located in Guelph, Ontario on the campus of the Ontario Agricultural College (OAC), the Ontario Veterinary College (OVC), and the Macdonald Institute. The station is usually known as No. 4 Wireless School and was home to several schools as well as test facilities for air force kitchens.