In general when looking for the cheapest flight to Cork, try to book your flight during the month of September for the best deal.
On average, from most locations, when planning your trip to Cork, try to book your flight in the region of 40 days in advance for the cheapest prices.
In general, booking your departure to Cork for a Saturday represents the best deal on airfare. Try to avoid a Sunday departure to stay away from the highest prices.
Generally, when visiting Cork, noon flights represent the best value. morning flights are likely to have higher prices.