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$203+ Cheap flights from the United States to Ireland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — DUB
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from USA to Ireland

Keep the following information in mind while searching for USA to Ireland flight deals. Data was last updated junio 12, 2025.

Round-trip from

$404
(Booking.com)

One-way from

$203
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$742

Good round-trip deal

$454 or less

Good one-way deal

$413 or less
From USA to Ireland
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One-way flight from USA to Ireland
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Highest demand for flights based on searches. 12% potential increase in price ($83 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from USA to Ireland.
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Price to beat on a one-way flight from USA to Ireland.
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Find flight deals from USA to Ireland

Cheapest flights from USA to Ireland
Explore the most affordable flight options available from USA to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This CheapOair deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/1712:15 pmBOS - DUB
2 stops14h 30mAir Canada
mié. 9/249:50 amDUB - BOS
2 stops16h 35mAir Canada
Deal found 6/12$404
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/215:40 pmBOS - DUB
1 stop13h 10mScandinavian Airlines
sáb. 10/258:05 pmDUB - BOS
2 stops25h 45mScandinavian Airlines
Deal found 6/12$405
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/85:30 amBOS - DUB
1 stop20h 40mUnited Airlines
mar. 8/129:20 amDUB - BOS
1 stop29h 10mUnited Airlines
Deal found 6/11$406
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/157:00 amEWR - DUB
1 stop19h 10mUnited Airlines
mié. 7/239:20 amDUB - EWR
Nonstop7h 10mUnited Airlines
Deal found 6/12$407
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/304:20 pmBOS - DUB
1 stop11h 25mDelta
vie. 10/1012:00 pmDUB - BOS
Nonstop7h 15mDelta
Deal found 6/10$407
This KLM deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/208:15 pmBOS - DUB
1 stop11h 20mMultiple Airlines
jue. 8/283:00 pmDUB - BOS
Nonstop7h 20mMultiple Airlines
Deal found 6/11$408
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/215:30 pmEWR - DUB
1 stop21h 30mScandinavian Airlines
vie. 8/2911:45 amDUB - EWR
2 stops30h 30mScandinavian Airlines
Deal found 6/12$409
This oojo deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/26:10 pmBOS - DUB
1 stop10h 50mTAP AIR PORTUGAL
dom. 9/145:30 amDUB - BOS
1 stop13h 50mTAP AIR PORTUGAL
Deal found 6/12$409
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/214:30 pmEWR - DUB
1 stop9h 40mAir Canada
vie. 11/289:00 amDUB - EWR
2 stops15h 30mAir Canada
Deal found 6/11$410
This Gurufare deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/38:50 pmBOS - DUB
1 stop11h 25mIcelandair
mar. 10/72:15 pmDUB - BOS
1 stop12h 45mIcelandair
Deal found 6/10$411
This Icelandair deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/48:25 pmEWR - DUB
1 stop9h 40mIcelandair
mié. 9/1712:15 pmDUB - EWR
1 stop11h 55mIcelandair
Deal found 6/11$412
This Lufthansa deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/218:05 pmBOS - DUB
1 stop15h 50mLufthansa
lun. 7/288:00 pmDUB - BOS
1 stop26h 40mLufthansa
Deal found 6/10$420

Cheapflights Fare Finder

Customize your flight search to find flights from USA to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from the United States to Ireland that are best for you.

Fly from

USA

Fly to

Ireland

Route

Depart

Return

Price

BostonDublin

BOS - DUB

BOSDUB

Boston Logan Intl

mié. 9/17

12:15 pm-7:45 am

2 stops14h 30m

Dublin

mié. 9/24

9:50 am-9:25 pm

2 stops16h 35m

$404

BostonDublin

BOS - DUB

BOSDUB

Boston Logan Intl

mar. 10/21

5:40 pm-11:50 am

1 stop13h 10m

Dublin

sáb. 10/25

8:05 pm-4:50 pm

2 stops25h 45m

$405

BostonDublin

BOS - DUB

BOSDUB

Boston Logan Intl

vie. 8/8

5:30 am-7:10 am

1 stop20h 40m

Dublin

mar. 8/12

9:20 am-9:30 am

1 stop29h 10m

$406

BostonDublin

BOS - DUB

BOSDUB

Boston Logan Intl

mar. 9/30

4:20 pm-8:45 am

1 stop11h 25m

Dublin

vie. 10/10

12:00 pm-2:15 pm

Nonstop7h 15m

$407

NewarkDublin

EWR - DUB

EWRDUB

Newark

mar. 7/15

7:00 am-7:10 am

1 stop19h 10m

Dublin

mié. 7/23

9:20 am-11:30 am

Nonstop7h 10m

$407

BostonDublin

BOS - DUB

BOSDUB

Boston Logan Intl

mié. 8/20

8:15 pm-12:35 pm

1 stop11h 20m

Dublin

jue. 8/28

3:00 pm-5:20 pm

Nonstop7h 20m

$408

BostonDublin

BOS - DUB

BOSDUB

Boston Logan Intl

mar. 9/2

6:10 pm-10:00 am

1 stop10h 50m

Dublin

dom. 9/14

5:30 am-2:20 pm

1 stop13h 50m

$409

NewarkDublin

EWR - DUB

EWRDUB

Newark

jue. 8/21

5:30 pm-8:00 pm

1 stop21h 30m

Dublin

vie. 8/29

11:45 am-1:15 pm

2 stops30h 30m

$409

NewarkDublin

EWR - DUB

EWRDUB

Newark

vie. 11/21

4:30 pm-7:10 am

1 stop9h 40m

Dublin

vie. 11/28

9:00 am-7:30 pm

2 stops15h 30m

$410

BostonDublin

BOS - DUB

BOSDUB

Boston Logan Intl

vie. 10/3

8:50 pm-1:15 pm

1 stop11h 25m

Dublin

mar. 10/7

2:15 pm-10:00 pm

1 stop12h 45m

$411

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 60 results
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Best time to book a flight from USA to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from USA with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United States to Ireland

What is the cheapest month to book a flight from USA to Ireland?

Currently, November is the cheapest month in which you can book a flight from USA to Ireland (average of $509). Flying from USA to Ireland in June is currently the most expensive (average of $947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from US to IE?

Find hourly flight availability from USA to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to Ireland as you normally would.

Weekly flight availability from USA to Ireland

Explore weekly flight availability from USA to Ireland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated junio 12, 2025.

The most flights from US0 to IE0 are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Ireland by month

Plan your trip to Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ireland ranges from 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Ireland when rainfall is around 1.9 in.

Temperature in Ireland by month

Plan your trip to Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ireland. Reviews last updated junio 12, 2025.
Get a feel of what it's like to fly with Delta, Alaska Airlines and KLM from USA to Ireland by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Alaska Airlines
8.0
Very good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Transat
7.8
Good
396 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from USA to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this USA to Ireland flight route?

    Within the past month, 44 users have taken a look at flights from United States to Ireland.

  • What are the cheapest airlines to fly from USA to Ireland one-way?

    $203 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Icelandair and Iberia, with prices starting from $234 and $276, respectively.

  • Can I find deals for flights from USA to Ireland that include hotel bookings?

    Yes. In addition to deals on USA to Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from USA to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Ireland.

  • Can I find deals for business class flights from USA to Ireland?

    Yes. Cheapflights offers flight deals from USA to Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from USA to Ireland?

    Currently, November is the cheapest month in which you can book a flight from USA to Ireland (average of $509). Flying from USA to Ireland in June is currently the most expensive (average of $947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for USA to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Newark to Charles de Gaulle flights
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Newark to Orly flights
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Baltimore to Heathrow flights
O'Hare Intl to Charles de Gaulle flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Newark to Malpensa flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
Boston to Charles de Gaulle flights
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John F Kennedy Intl to Dublin flights
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LaGuardia to Gatwick flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Boston to Lisbon flights
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Newark to Frankfurt flights

Top 10 airlines flying from USA to Ireland

Discover the top 10 airlines that operate flights from USA to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$204Average$677FlexibilityNo cancel feeOn-time79%
JetBlueCheapest$248Average$796FlexibilityNo cancel feeOn-time62%
PLAYCheapest$281Average$377FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$288Average$488FlexibilityNo cancel feeOn-time77%
DeltaCheapest$292Average$808FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$344Average$508FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$352Average$566FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$365Average$720FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$386Average$806FlexibilityNo cancel feeOn-time69%
IberiaCheapest$391Average$720FlexibilityNo cancel feeOn-time77%

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