Banff National Park is a major tourist destination, seeing millions of visitors every year, with the bulk in the summer season. Travelling here should not be a difficult task as many major airlines either fly directly to Calgary or with short stops in either Toronto or Vancouver depending where you are coming from. Once in Canada it is best to rent a vehicle, one with winter tires would be a plus but it seems this option is rarely provided in which case a 4 wheel drive may be your best bet. If driving within North America your goal will most likely be to reach the Trans Canada Highway which travels directly through Banff National Park.