What a fantastic experience! You really want to see Denali NP as few ever will? Then do this. Worth every penny.
I’ve spent time in Greenland and Antarctica, in places few can even get to unless there on science and if you want to see what the Arctic and the highest mountains in the world look like, this is the easiest and safest way to do it. Plus, you get to ride in a Dehavilland Otter, a legendary aircraft.
I’m an instrument rated pilot, and I was super impressed with their safety. They have the right equipment to do this and do it very safely. That does not come cheap, but as I said, it’s worth it.