Under the Aeronautics Act, it is illegal to use a recreational drone within 5.6 kilometers (3 nautical miles) of aerodromes. Therefore, it is strictly forbidden to fly a drone on the territory of YUL Montréal-Trudeau International Airport.
You could be subject to serious penalties, including fines or incarceration, if you break the law.
To use a drone for non-recreational purposes near an aerodrome, you must obtain a certificate.
For any questions regarding the use of drones, please consult the Transport Canada website.