Question : What day in the next four weeks has the best fares?
Answer : Mar 28th has seen bookings (as of Feb 27th) as cheap as $435. That comes in 18% below the average price for this route. Saving now means you'll have more money to spend on your trip.
Question : Is the price you found a good deal?
Answer : Ranging from $435 to $698, prices for CTG to DEN do fluctuate more than most routes from Colombia. Remember, you can save by booking further in advance.
Question : How long do most people visit Denver?
Answer : Of course you're not most people, but if you were, you'd stay roughly 53 days.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : The cheapest day to fly in March is Tuesday. Flexibility is paramount when booking travel plans in order to keep travel costs down.