I would tend to take the train. There is a pass you can get for $545 if you wanted to stop several places, like Banff if it still goes there...that is if you are 60 or over.

I would either take the train or drive and stay in motels. I wouldn't mix air plus train plus car. You want to be aware of the weather--can be very severe thunderstorms at least in summer and I am not sure when snow starts in the mountains...but the train is lovely.

I think 2 seniors with sleeping compartment is about 3,000..very expensive. I think car would be cheaper. I have done it and it is a beautiful trip. mg