Cheap flights from the United States to Ireland from €137
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Ireland departing on 24/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Aer Lingus flights from United States to Ireland
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How to get the cheapest flight ticket from United States to Ireland
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Ireland?
The month of February is another great option to travel to Ireland, with average flight prices from United States averaging around €413.
What is the cheapest day to depart on your flight to Ireland?
The cheapest day to depart on your flight to Ireland is on a Monday when prices can be found for as low as €431. 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 Sunday because tickets tend to average around €879. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.
What is the cheapest time of day to depart on your flight to Ireland?
At midday is the cheapest time of day to fly from United States to Ireland when you can find flight prices for as low as €350. Flying to Ireland at midday 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 €598.
What is the cheapest United States to Ireland flight route?
Fly from Boston Logan Intl to Dublin for the best United States - Ireland flight prices
How far in advance should I book a flight to Ireland?
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 €523 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 €463 on momondo.
What cabin class options are available on United States to Ireland flights?
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.
What is the cheapest airline that flies from United States to Ireland?
TAP AIR PORTUGAL and Icelandair are the most popular carriers operating from United States to Ireland
Which airlines fly to Ireland?
Aer Lingus, United Airlines and Delta 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 68% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 4 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
How many flights depart from United States to Ireland on average per day?
The number of flights available between United States and Ireland is 77 per day as of July 2025. The most frequent departure time is 17:00, with 65% of daily flights leaving in the evening.
How many flights depart from United States to Ireland on average per week?
As of July 2025, there are 544 flights per week flying from United States to Ireland. The most common day of the week flights depart is Sat, with 15% of flights taking off on this day.
Cheap United States to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United States to Ireland
When did momondo last update prices for flights from United States to Ireland?
Prices for flights from United States to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from United States to Ireland?
There are 3 operators available for flights from United States to Ireland as of July 2025.
How old do you have to be to fly from United States to Ireland?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to Ireland.
What documentation or ID do you need to fly to Ireland?
The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from United States to Ireland?
momondo data reveals that the most frequently booked plane model on the route from United States to Ireland is Boeing 777, representing 17.35% of all bookings. The subsequent popular models are Boeing 767-300 (winglets) at 14.13%, Boeing 757-200 at 12.43%, and Boeing 787-8 Dreamliner at 7.61%.
Best airlines flying from United States to Ireland
Compare and see reviews for airlines that fly from United States to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom €318 | Free Cancellation | Rating 7.4 8,849 reviews | |||
| PriceFrom €365 | Free Cancellation | Rating 7.1 1,144 reviews | |||
| PriceFrom €413 | Free Cancellation | Rating 8.0 7,968 reviews | |||
| PriceFrom €648 | Free Cancellation | Rating 7.2 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from United States to Ireland?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from United States to Ireland for you.
Can I find flights from United States to Ireland with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for United States to Ireland flights to just show those with flexible booking policies.
How can momondo help me find flights from United States to Ireland?
momondo provides multiple filters to help you find the best flight to Ireland from United States. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from United States to Ireland right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Ireland from United States. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.