On a Nikon D3300, your 50mm behaves like a short telephoto, so it isn’t a typical landscape focal length. For landscapes, a wider lens is usually more useful, especially on DX. Good options mentioned were a 24mm or 35mm prime, an 18-55mm standard zoom, or a 17-50mm f/2.8 / 17-70mm zoom.

Of the two lenses you already own, the 55-200mm is the more versatile one to bring if you expect wildlife or want tighter mountain details. Telephoto lenses can work very well for landscape compression and are also helpful for animals.

So: yes, wide angle is often preferred for broad scenic views, but it’s not the only landscape choice. If you want classic sweeping Banff scenes, add a wider DX-friendly lens. If you’re choosing only from your current lenses, bring the 55-200mm; it’s likely to be more useful than the 50mm on this camera.