Cheap flights from the United States to Ireland from €165

The month of January is another great option to travel to Ireland, with average flight prices from United States averaging around €452.

The cheapest day to depart on your flight to Ireland is on a Friday when prices can be found for as low as €425. 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 Monday because tickets tend to average around €784. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

Fly from New York John F Kennedy Intl to Dublin for the best United States - Ireland flight prices

You are more likely to see cheaper flights to Ireland from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €505 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 United States for as low as €445 on momondo.

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

You could potentially save up to 30% on your flight if you consider stops on a United States to Ireland flight.

Aer Lingus, KLM, and Delta are the most popular carriers operating from United States to Ireland

Aer Lingus, United Airlines and JetBlue are the top three most popular airlines that fly to Ireland from United States according to our data. Aer Lingus is the first choice among our users, with 73% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 3 different airlines that fly to Ireland 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 Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 167 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the evening 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. Thursday 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 11% of their flights experiencing any sort of delay.

The number of flights available between United States and Ireland is 97 per day as of September 2026. The most frequent departure time is 17:00, with 64% of daily flights leaving in the evening.

As of September 2026, there are 680 flights per week flying from United States to Ireland. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.