In general, when booking your flight to Cancún, March is the cheapest month on average.
On average, from most locations, when planning your trip to Cancún, try to book your flight in the region of 14 days in advance for the cheapest prices.
On average, the cheapest flights to Cancún are found when departing on a Tuesday. Try to avoid departing on a Thursday, as this is usually the most expensive day.
Generally, when visiting Cancún, afternoon flights represent the best value. evening flights are likely to have higher prices.