Cheap flights from Boston to Ireland from €251

The month of October is another great option to travel to Ireland, with average flight prices from Boston averaging around €359.

The cheapest day to depart on your flight to Ireland is on a Sunday when prices can be found for as low as €362. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around €806. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

In the afternoon is the cheapest time of day to fly from Boston to Ireland when you can find flight prices for as low as €524. Flying to Ireland in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is in the evening when prices are around €581.

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

You are more likely to see cheaper flights to Ireland from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €435 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Boston for as low as €413 on momondo.

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

Historically, on average around 6% of flights between Boston and Ireland 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.

Tuesday 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.

22 flights are operational daily from Boston to Ireland as of April 2026. The most popular departure time for this route is 21:00, with 76% of flights per day taking off in the evening.

As of April 2026, there are 155 flights per week flying from Boston to Ireland. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.