Question : How long do most people stay in Prague when they fly in from Tucson?
Answer : Of course you're not most people, but if you were, you'd stay roughly 12 days.
Question : Is price more important than specific travel days for you?
Answer : The cheapest day to fly in December is Sunday. Being flexible with your travel days garners you even more savings during your booking.
Question : Do prices fluctuate more for this route than others?
Answer : Prices are fluctuating much more for this route than most routes. Remember, the sooner you book, the more you're able to save.