Cheap flights from Boston to Dublin from $227

In general, January is the cheapest month to fly from Boston to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $408. If you’re not able to fly to Dublin in January, then February is your next best option. Flight prices from Boston to Dublin during February average around $409.

The cheapest day to depart from Boston to Dublin is on a Monday. Travelers who choose to depart for Dublin on a Monday will often find tickets for as low as $645. Flights from Boston to Dublin on a Friday will generally be more expensive and average around $727. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the evening is the cheapest time of day to fly from Boston to Dublin when you can find flight prices for as low as $652. Flying to Dublin in the evening is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $708.

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 $579 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from Boston for as low as $548 on momondo.

There are 4 cabin classes available to choose from on Boston to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, British Airways, and KLM are the most popular carriers operating from Boston Logan Intl to Dublin

Aer Lingus, Delta and JetBlue are the top three most popular airlines that fly to Dublin from Boston according to our data. Aer Lingus is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Dublin. Keep in mind that there are 13 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.

Historically, on average around 9% 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 147 minutes.

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

Tuesday 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 6% of their flights experiencing any sort of delay.

Reykjavik (KEF) was the most common stop: 27% of momondo users choosing 1-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average round-trip price of $374.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 9h 18m.

Newark (EWR) has the shortest average layover time for this route: 1h 33m.

13 flights are operational daily from Boston to Dublin as of September 2026. The most popular departure time for this route is 5:00PM, with 60% of flights per day taking off in the evening.

As of September 2026, there are 95 flights per week flying from Boston to Dublin. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.