Question : What day in the next four weeks has the best fares?
Answer : Since low prices are preferred, look at December 30th. As of December 5th, the cheapest ticket sales are coming in 24% below the average price for this route, so you can spend that extra cash on an adventure in Johannesburg.
Question : How long do most people stay in Johannesburg when they fly in from Denver?
Answer : Of course you're not most people, but if you were, you'd stay roughly 17 days.
Question : Is price more important than specific travel days for you?
Answer : In December, Tuesday is your cheapest day to fly. Being flexible with your travel days garners you even more savings during your booking.
Question : How often are prices changing for this route?
Answer : Prices are fluctuating a lot more for this route than most routes. The further out you book a route, the more likely you are to save.