In general, September is the cheapest month to fly from Ireland to Tallinn. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around 106€. If you don’t want to visit Tallinn in September, then you should wait until October to fly from Ireland, when ticket prices are also cheap, with an average price of 143€.
Most flyers found that booking tickets 56 days in advance of their planned departure date is the best time to get cheap flights to Tallinn. During this timeframe, flight prices are around 173€. However, in the past 72 hours, people saw flights from Ireland for as low as 51€.
The cheapest day to depart on your flight to Tallinn is on a Tuesday when prices can be found for as low as 148€. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to Tallinn for around 248€.
The cheapest time of day to fly to Tallinn is in the morning when flights can be purchased for as low as 159€. Flights at midday are often more expensive, with an average ticket price of 206€.