Cheap flights from the United States to Dublin from $125

In general, February is the cheapest month to fly from United States to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $514. If you’re not able to fly to Dublin in February, then January is your next best option. Flight prices from United States to Dublin during January average around $547.

The cheapest day to depart from United States to Dublin is on a Sunday. Travelers who choose to depart for Dublin on a Sunday will often find tickets for as low as $595. Flights from United States to Dublin on a Saturday will generally be more expensive and average around $664. 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 United States to Dublin when you can find flight prices for as low as $617. 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 $629.

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

You are more likely to see cheaper flights to Dublin from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around $556 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from United States for as low as $498 on momondo.

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

Aer Lingus, Delta, and United Airlines are the most popular carriers operating from United States to Dublin

Aer Lingus, United Airlines and American Airlines are the top three most popular airlines that fly to Dublin from United States 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 21 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.

Historically, on average around 15% of flights between United States and Dublin have experienced a delay on any given week. The average delay length over the past 12 months has been 168 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening 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. Thursday 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 12% of their flights experiencing any sort of delay.

As of July 2026, there are 106 flights per day flying from United States to Dublin. The most common time of day flights depart is 5:00PM, with 69% of flights taking off in the evening.

As of July 2026, there are 745 flights per week flying from United States to Dublin. The most common day of the week flights depart is Thu, with 14% of flights taking off on this day.