I live in a small town (aren't they all in ND) about 2 hours south of Fargo. We are flying out of Minneapolis for our June trip. It was much cheaper to fly out of there. It was around $150 or so less when I was looking and booked our flight. We paid $206 for our tickets, but I have seen some as low as $179 since then. However, ours flight is nonstop and I am willing to pay extra for that. We are have a reservation for a park and fly package for $99.
I agree that the people in ND are some of the nicest you will find. Good luck!