Montreal is the ideal starting point to visit the province of Quebec and the northeastern part of the USA.
There are many ways to get from one place to another: it’s possible to rent a car, to catch a bus, carpooling, to catch a train or even an airplane. Montreal is served by an airport Pierre-Elliott-Trudeau (YUL), but it is as well possible to take flights from other airports on the other side of the border, like from the airports of Burlington (BTV) and of Plattsburgh (PBG).
Here are the closest destinations to Montreal :
The rest of the Province of Quebec
James Bay (and its hydroelectric dams) and the “Grand Nord”
Rest of Canada