Banff is the kind of place that ruins other mountains for you. You get towering limestone peaks, bright turquoise lakes like Moraine and Louise, and air that actually smells clean. If you want the classic blue water and long hiking days, book early in spring for the summer peak. If you want the yellow larch needles turning the valleys gold, aim for late September.
A typical trip runs about $2500 for flights, a decent place to stay, and a rental car to get you out on the Icefields Parkway. Since dropping that much cash in one hit hurts, we need a plan to spread it out over time without paying a dime in interest.
That 0% window is a deadline, not free money, so make sure your $2500 balance is fully paid off before the 18 months are up or you will get hit with interest on what is left.