Locals of Seattle and tourists both agree that Mount St. Helens is a great place to go for a hike and to take in the scenery the area has to offer. The month of April seems to be the most ideal time to visit Seattle if you’re looking to fully experience hiking a mountain and walking a beautiful nature trail. Hikers looking for a more family-friendly day in the great outdoors would be best suited to plan their flight to Seattle for May, June, and July, when they can visit Kubota Garden and enjoy all that the park has to offer.