Question : Are prices changing frequently for this route?
Answer : Prices for RDU to GFK do fluctuate much less than most. The further out you book a route, the more likely you are to save.
Question : How long are most people's visits to Grand Forks when they fly in from Raleigh?
Answer : Of course you're not most people, but if you were, you'd stay roughly three days.
Question : Would you be willing to change your travel days if it saved you money?
Answer : The cheapest day to fly in February is Sunday. Being flexible with your travel days garners you even more savings during your booking.