In general, when looking for the cheapest flight to Denver, try to choose a flight departing in November for the best deal.
Most flyers found that booking flight tickets 25 days in advance of their planned departure date is, on average, the best time to get cheap flights to Denver.
In general, booking your departure to Denver for a Tuesday represents the best deal on airfare. Try to avoid a Sunday departure to stay away from the highest prices.
Generally, when visiting Denver, afternoon flights represent the best value. evening flights are likely to have higher prices.