Cheap flights from Ireland to Boston from $375

In general, January is the cheapest month to fly from Ireland to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $489. If you aren’t able to travel during the month of January, then book flights to Boston from Ireland during March instead. Flights to Boston in March, while not as cheap as those in January, still average around $537.

The cheapest day to depart from Ireland to Boston is on a Thursday when prices can be found for as low as $581. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $763.

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from Ireland to Boston in the afternoon for as low as $614. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $730 per ticket.

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

You are more likely to see cheaper flights to Boston from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $621 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Ireland for as low as $579 on momondo.

There are 3 cabin classes available to choose from on Ireland to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

KLM, Delta, and Aer Lingus are the most popular carriers operating from Ireland to Boston Logan Intl

Aer Lingus, Delta and JetBlue are the top three most popular airlines that fly to Boston from Ireland according to our data. Aer Lingus is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 3 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

Historically, on average around 8% of flights between Ireland and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 134 minutes.

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

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

As of October 2026, there are 11 flights per day flying from Ireland to Boston. The most common time of day flights depart is 4:00PM, with 95% of flights taking off in the afternoon.

The number of flights available between Ireland and Boston is 80 per week as of October 2026. The most frequent departure day is Wed, with 25% of weekly flights leaving on this day.