You can access Nahanni by many ways. Most people arrive by air, some by driving, but if you're adventurous you could walk! We advise using Nahanni.com or Parks Canada for the most accurate up to date, useful, and trustworthy information about Nahanni National Park
If you are looking for any in park accommodations there is just one big one, Nahanni Mountain Lodge. You arrive there on an Simpson Air flight, otherwise if you are interested in any other accommodations there are only ones out of park or not easily accessed.
You can get flights from all across Canada, to get to Nahanni by air you can take any charter plane that flies there, we suggest using Simpson Air Nahanni is there specialty. If you are going to fly to Nahanni the cost can get fairly wild it depends on the charter and the time you intend to go.
You can drive into Nahanni from almost anywhere across Canada, it's one long journey to get there but some beautiful things to see along he way. There aren't any main roads into Nahanni, we suggest to drive in from Fort Simpson or get a charter flight from there. We advise to get a guide and do a lot of planning for a guaranteed safe trip.