If you only read one airspace section on this site, read this one. Hamilton is where a drone booking most often falls apart on the day, and it is almost always for reasons that were predictable a week earlier.
John C. Munro Hamilton International Airport (CYHM) is a certified airport with genuine traffic: scheduled passenger service, a large overnight cargo operation, and flight training. It sits on the Mountain south of the city and carries a substantial geozone plus controlled airspace above it. A meaningful part of upper Hamilton, Mount Hope, Glanbrook, and the eastern Mountain falls inside that footprint. A Basic-certified pilot cannot legally fly there. Full stop.
Layered on top of that: the harbour and steel lands have their own operational hazards, including active industrial plumes that will destroy a flight plan and, in some cases, the aircraft. There is helicopter and air-ambulance traffic serving the hospitals. The escarpment edge produces mechanical turbulence and rotor on windy days that a small aircraft feels immediately. Conservation Halton and Hamilton Conservation Authority lands around Webster's, Tews, Sherman, and Albion Falls restrict launching and landing on their property.
Our process for every Hamilton job is the same. We take the exact address or site coordinates, check the CYHM geozone and controlled airspace boundary against it, review current notices, file for authorization through NAV CANADA's NAV Drone system where it is required, and confirm the date only once we know the flight is legal. We hold an Advanced RPAS Pilot Certificate with registered aircraft, which is the qualification that makes that request possible in the first place.
For industrial clients we can supply the authorization reference, pilot certificate number, and aircraft registration in advance for your contractor pre-qualification file. For Mountain and Mount Hope sites, give us a week where you can. Same-week bookings are often fine in the lower city, Dundas, and Ancaster.