Cheap flights from Ireland to the United States from £257

The month of November is, on average, the cheapest month to fly to United States from Ireland, with most prices found around £435. If you are unable to visit United States during the month of November, then departing from Ireland during the month January is also very affordable. Most momondo users find prices during this month for around £435.

According to our data, Monday is the cheapest day to fly to United States from Ireland. The lowest ticket price found for a Monday departure recently was £380. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to United States for around £500.

Our most recent data shows that the best time of day to fly to United States is in the evening. Flights from Ireland to United States during this time can be as low as £97. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £516 on average. Flights to United States from Ireland in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to United States from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around £463 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Ireland for as low as £331 on momondo.

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

KLM, Delta, and TAP AIR PORTUGAL are the most popular carriers operating from Ireland to United States

Aer Lingus, United Airlines and American Airlines are the top three most popular airlines that fly to United States from Ireland according to our data. Aer Lingus is the first choice among our users, with 64% of people opting to fly with this airline when travelling to United States. Keep in mind that there are 14 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between Ireland and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night 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. Sunday 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 10% of their flights experiencing any sort of delay.

As of October 2026, 70 flights take off from Ireland and land in United States each day. The most common flight departure time for this route is 13:00, with 74% of daily flights taking off in the afternoon.

As of October 2026, there are 496 flights per week flying from Ireland to United States. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.