Cheap flights from Boston to Dublin from €274

If you aren’t able to travel during the month of February, then book flights to Dublin from Boston during January instead. Flights to Dublin in January, while not as cheap as those in February, still average around €347.

Our data shows that Sunday is the least expensive day to fly to Dublin. Tickets to fly out on this day can be as low as €361. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around €803. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

Our data shows that the cheapest Boston to Dublin flights are usually those with departure times in the afternoon. Our users have found flights to Dublin in the afternoon for as low as €422. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €552 on average. Flights to Dublin from Boston in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Boston Logan Intl to Dublin for the best Boston Logan Intl - Dublin flight prices

You are more likely to see cheaper flights to Dublin from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around €428 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from Boston for as low as €386 on momondo.

You could potentially save up to 32% on your flight if you consider stops on a Boston to Dublin flight.

As of May 2026, prices for Boston to Dublin flights are approximately 22% cheaper when compared to flights at the same time last year.

Historically, on average around 7% of flights between Boston and Dublin have experienced a delay on any given week. The average delay length over the past 12 months has been 146 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 5% of their flights experiencing any sort of delay.

As of May 2026, there are 18 flights per day flying from Boston to Dublin. The most common time of day flights depart is 17:00, with 66% of flights taking off in the evening.

As of May 2026, 126 flights take off from Boston and land in Dublin each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.