Montreal gives you cobblestone streets, French bistros, and world-class jazz without the price tag of a transatlantic flight. Aim for May or September to catch the shoulder-season rates before the summer crowds or winter freezes hit.
A typical trip runs about $2200 for flights, hotels, and food. Spreading that cost out takes some planning so you do not get stuck with high interest later.
That 0% intro window is a hard deadline, not free money. If you still have a balance left when the 15 months end, the remaining amount will start getting hit with regular interest.