In general, when looking for the cheapest flight to Cancún, try to choose a flight departing in March for the best deal.
From most locations, booking your flights to Cancún around 0 days prior to your departure date finds the best deals.
Most of our users find that booking their departure to Cancún on a Tuesday is the cheapest. Conversely, departing on a Saturday seems to be the most expensive.
Generally, when visiting Cancún, midday flights represent the best value. afternoon flights are likely to have higher prices.