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.

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).

How far in advance should I book a flight from Islip, New York to Ireland?

Find a great deal and save up to 52% by booking at least 60 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Islip, New York to Ireland within the next two weeks, with the cheapest ticket starting at $590.

What is the cheapest month to fly from Islip, New York to Ireland?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to Ireland. Flights to Ireland from Islip, New York in January are about $586 on average during January, but can be found for as low as $343.

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

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

What airport do you fly from for flights from Islip to Ireland?

If you book a flight to Ireland from Islip, you will be flying from Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.

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

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

How can I find direct flights from Islip to Ireland?

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

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

Yes. Cheapflights offers flight deals from Islip 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.

$1,523+ Flights from Islip, NY to Ireland

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Cheap flight deals from Islip to Ireland

Round-trip from	$1,373 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$661

From Islip Long Island to Ireland

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($81 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Islip to Ireland

Cheapest flights from Islip to Ireland
Explore the most affordable flight options available from Islip to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Sat 8/167:30 amISP - DUB

1 stop16h 00mMultiple Airlines

Sat 8/236:20 amDUB - ISP

2 stops18h 41mMultiple Airlines

Deal found 7/1

$1,373

Sat 8/164:33 pmISP - SNN

1 stop31h 52mMultiple Airlines

Sat 8/231:45 pmSNN - ISP

1 stop11h 16mMultiple Airlines

Deal found 7/2

$1,592

Best flights from Islip to Ireland
Discover carefully curated flight deals from Islip to Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2025.

Sat 8/167:30 amISP - DUB

1 stop16h 00mMultiple Airlines

Sat 8/236:20 amDUB - ISP

2 stops18h 41mMultiple Airlines

Deal found 7/1

$1,373

Sat 8/164:33 pmISP - SNN

1 stop31h 52mMultiple Airlines

Sat 8/231:45 pmSNN - ISP

1 stop11h 16mMultiple Airlines

Deal found 7/2

$1,592

Last-minute flights from Islip to Ireland
Discover last-minute flight deals from Islip to Ireland. Data last updated July 2, 2025 and is based on user searches.

Sat 8/167:30 amISP - DUB

1 stop16h 00mMultiple Airlines

Sat 8/236:20 amDUB - ISP

2 stops18h 41mMultiple Airlines

Deal found 7/1

$1,373

Sat 8/164:33 pmISP - SNN

1 stop31h 52mMultiple Airlines

Sat 8/231:45 pmSNN - ISP

1 stop11h 16mMultiple Airlines

Deal found 7/2

$1,592

One-way flights from Islip to Ireland
Search for one-way flight options from Islip to Ireland. Find affordable one-way fares based on user searches. Data last updated July 2, 2025.

Fri 8/12:19 pmISP - DUB

1 stop9h 11mMultiple Airlines

Deal found 7/2

$1,480

Fri 12/194:33 pmISP - SNN

1 stop8h 47mMultiple Airlines

Deal found 7/1

$1,725

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipDublin

ISP - DUB

ISPDUB

Islip Long Island

Sat 8/16

7:30 am-4:30 am

1 stop16h 00m

Dublin

Sat 8/23

6:20 am-8:01 pm

2 stops18h 41m

$1,373

IslipShannon

ISP - SNN

ISPSNN

Islip Long Island

Sat 8/16

4:33 pm-5:25 am

1 stop31h 52m

Shannon

Sat 8/23

1:45 pm-8:01 pm

1 stop11h 16m

$1,592

IslipDublin

ISP - DUB

ISPDUB

Islip Long Island

Fri 8/1

2:19 pm-4:30 am

1 stop9h 11m

$1,480

IslipShannon

ISP - SNN

ISPSNN

Islip Long Island

Fri 12/19

4:33 pm-6:20 am

1 stop8h 47m

$1,725

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Islip to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Islip 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 Islip to Ireland

What is the cheapest month to book a flight from Islip, New York to Ireland?

Currently, November is the cheapest month in which you can book a flight from Islip, New York to Ireland (average of $509). Flying from Islip, New York to Ireland in June is currently the most expensive (average of $929). 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.

Related info for your journey

What airport do you fly from for flights from Islip to Ireland?
If you book a flight to Ireland from Islip, you will be flying from Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.
Can I find deals for flights from Islip to Ireland that include hotel bookings?
Yes. In addition to deals on Islip to Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Ireland.
Can I find deals for business class flights from Islip to Ireland?
Yes. Cheapflights offers flight deals from Islip 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 Islip, New York to Ireland?
Currently, November is the cheapest month in which you can book a flight from Islip, New York to Ireland (average of $509). Flying from Islip, New York to Ireland in June is currently the most expensive (average of $929). 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

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$1,373+ Cheap flights from Islip, NY (ISP) to Ireland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Ireland with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Ireland

Keep the following information in mind while searching for Islip to Ireland flight deals. Data was last updated July 2, 2025.

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Islip to Ireland

Cheapest flights from Islip to IrelandExplore the most affordable flight options available from Islip to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Explore the most affordable flight options available from Islip to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Ireland that are best for you.

Best time to book a flight from Islip to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Islip with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Islip to Ireland

What is the cheapest month to book a flight from Islip, New York to Ireland?

Related info for your journey

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

What airport do you fly from for flights from Islip to Ireland?

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

How can I find direct flights from Islip to Ireland?

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

What is the cheapest month to book a flight from Islip, New York to Ireland?

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 Islip to Ireland

See prices for flight routes from nearby airports that may be better suited for you.

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Cheapest flights from Islip to Ireland
Explore the most affordable flight options available from Islip to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.