In general when looking for the cheapest flight to Shannon, try to book your flight during the month of March for the best deal.
In general, most flyers find the cheapest time to book a flight to Shannon is about 60 days prior.
On average, the cheapest flights to Shannon are found when departing on a Thursday. Try to avoid departing on a Sunday, as this is usually the most expensive day.
Typically, cheap prices to Shannon are most often found for afternoon flights. Cheap prices are less likely for noon flights.